VO1NA 137.7770 kHz, 187.370 kHz GN37or
1.2 kW DC input 5 Amps aerial current
Thanks to mother nature, only one of the original 2 100 metre wires of this
aerial remains in the air.
January 2005: Mother nature takes remaining wire... and the 25 metre tower!
February 2005: 100 metres of wire at 10 metres average height.
December 2010: 100m at 12 m average height.
2011 (photo VO1HP)
Operation Schedule / Signal Reports 2019
1-2 December EbNaut decoded at DF6NM,DL0AO and surprisingly at IZ7SLZ. TX power only 12 watts (reduced to prevent apparent arcing near feedpoint) Gary K3SIW reports good decodes and fading of carrier between frames at 0500.
1 Nov 2019. Unreliable mains foiled QRSS. 2 Nov Try again. 137.777 kHz QRSS to monopole until 11th. Markus DF6NM pleased to report the nice colour on his spectrograms. 12th. Attempt EbNaut. 13 Attempt with TX on this time. 20/21st. Reports from DF6NM (one 0600ut reception) and good copy at W1VD. 24: Power reuction to 10 watts but 2 Decodes at DF6NM.
12 Oct. 200 watts from one module of the Decca. EbNaut /13 EbNaut. 14,15th QRSS 100 137.777 kHz. 16 off air. 23-25 QRSS 137.777 kHz DOCXO/AD9851. 16 Nov. IZ7SLZ reported 2 decodes- a first for the class E at 25 watts to an unloaded monopole. Decodes at DL0AO and earlier at DF6NM. 17th. Another 2 decodes at IZ7LSZ and DL0AO.
7 Sep Ebnaut 25 W/monopole. Report from Michel F5WK.
26 Sep. EbNaut 25 W to monopole. Reports: W1VD IZ7SLZ(nil) and autodetects at DF6NM, DL0AO.
19-22 CW 136.4 then EbNaut 137.477 kHz. 12-15 July. CW on 136.4 kHz. 15 Ebnaut resumes on 147.477 16th off during electrical storm from 0000-2100ut. CW 136.4 kHz starting ~2100 17 Jul.
13 June. 25 watt EbNaut received on Markus' autodetector after hiatus since 6 June presumably due to high QRN. Stefan had posted dramatic wistlers 2 days ago.
April. 13 Garry reported a 4* detect. Much QRN this time of year. Markus is decoding many 'watts' across the pond. 14th. Power reduced from 10 to 5 watts and EbNaut message changed accordingly. 16th. 1943: monopole replaces iced down rotated L. EbNaut continues and is seen on DF6NM autodecoder. 24 Apr. Decodes by IZ7SLZ. 1221 ut TX off due to tower icing.
1st. Memorial message on Ebnaut copied by Gary and Markus. Resumed at 2130 today. 24 hr operation. 2nd: Garry could decode until 11ut. Local sr/ss 1011/2116 ut. Garys sr 1227.
4th. QRT to chase dx on 160m at 0600. Garry noticed this! lots of strong decodes at iz7slz, dl0ao and df6nm, up to 30 dB Eb/N0. QRP starting tonight. 7th. Michel F5WK reports good copy of the QRP sigs. Garry got a ******* but was otherwise troubled by QRM. Autodetectors at DL0AO and DF6NM were busy getting good decodes. 9th. Garry gets a decode at 0800 despite the QRM. Impressive! 11 and 13 dB Eb/N0 peaks at DF6NM and dl0ao. 18th F5WK reports good decodes in the moning.
2 April. forgot to switch from mf to lf last night. The 1 watt ebnaut on 137.477 kHz didn't go far. Hopefully it will return on the DL0AO and DF6NM autodecoders tonight.
1st Decodes reported by K3SIW and W1VD on the 2nd. TA receptions at DN6NM continue regularly. IZ7SLZ auto active but no decodes recently. The TX will remain on (200 watts, 2 amps RF) until Monday am.
3rd. Nice report from DF6NM autodecode: "137477 Hz file start time 2019-02-03 00:52:48.810 found VO1NA-* list rank 0 carrier Eb/N0 18.50 dB Eb/N0 from symbol errors 16.4 dB"
IZ7SLZ gets 2 decodes, this one was close to the limit: "2019-02-03_04:00:00 137477.000Hz N=7 T=3s 8K19A CRC=16 list=10000 sym=608 Duration=1824s T_OFFSET=0.0s F_OFFSET=0.00000Hz Nsymbols = 608 decoder length: 77, states 262144, QK 19 QD 8 initial reference phase 43.3 amplitude 1.356e-01 path metric: 4.4582967e+00 carrier amplitude: 1.020e-05 carrier power: 1.040e-10 total power: 1.124e-06 total noise power: 1.124e-06 carrier phase: 2.8 deg carrier Eb/N0: 0.1 dB carrier Es/N0: -11.76 dB carrier S/N: 16.07 dB in 548.2 uHz, -16.54 dB in 1Hz, -50.52 dB in 2.5kHz bits per hour: 78.8 Shannon capacity: 111.6% bits/hour Shannon efficiency: 70.5% Code weight: 282 found rank 1310 ber 3.6513e-01 Eb/N0 -0.4 M -4.458296299e+00 ph 1 180,180,180,180 [VO1NA-*]"
4th Good decodes from Garry K3SIW and Riccardo IW4DXW. TX is on again tonight. 1 Decca module. 6th. Decodes at K3SIW and DF6NM.
7th. Domenico IZ7SLZ notes no modulation... A problem on this end!
Wrong time was given to Ebkey! 10th Aluminium halyard anchor replaces the brurnt wooden one on the tower and the big 20x100m RL is raised again. It's on the air tonight. Sigs seem stronger on autodetects and spectrogram.
9 Feb. 2019. K3SIW: good decode.
11th: Riccardo IW4DXW noted stronger sigs. 13th. More reports from Riccardo who is doing some rx experimenting. Garry reports very strong signals from last night. 13-14th. Running 2 Decca modules to the RL. 500 watts 3.8 amps RF. Autodecodes IZ7SLZ 14.6 dB. DL0AO 26 dB! K3SIW decodes no longer plagued by QRM. A spectrogam was sent by Daniele Caccia SWL I55387FI showing sigs on the right freq. using a TS 450-S and a Mini Whip. 15: K3SIW: decoded easily in QRM. 16th. IZ7SLZ had a mains failure and lost some data, but got a decode last night. Garry K3SIW got another batch despite QRM. Perhaps its time to try to receive again. 17: strong sigs at I55387FI, More decodes from K3SIW. 0030 ut 23dB Eb/N0 at iz7slz 19th DF6NM reactivated his autodetect wiht decodes from this stn. Decode from K3SIW again. Running 3 Decca modules to the big RL. 20th. Garry gets decodes every hour in QRN/M.
30,31. EbNaut decodes from DK7FC K3SIW and W1VD in QRM. Decca still on 1 module with 200W output to the monopole. 26 Decodes from Garry and Markus again. Carrier was off for periods to use tower for 160m. Class E amp (Vdd set for 20W out) now in service to give the Decca a rest.
24,25th. Good decodes by K3SIW despite the heavy QRN fron the gulf. Autodetects at df6nm and dl0ao again.
23. Decode by Domenico IZ7SLZ and more from df6nm dl0ao.
21Jan. Ebnaut starting 2030 and on half hours. 200 W from 1 module of the Decca to the monopole. 22nd. Garry K3SIW: higher power made the decodes easier. dl0ao decodes 2027-0657 14 dB max Eb/N0; df6nm 2024-0654 15.8 dB carrier Eb/No
20 Jan. Playing with carrier on 137.477. Then: LF: 137.477 kHz 7 Chars, 8K19A, 3 s symbols, 608 symbols, starting 1900 ut and at 1 hr intervals, 40 watts to the monopole. Good decodes from DF6NM and DL0AO (autodecode), Garry K3SIW and Rob K3RWR.
Operation Schedule / Signal Reports 2018
1 Dec. Start Opera32. 50 watts 137.477 kHz to big rl.
OPDS detections at DF6NM and IZ7SLZ. PSKR: 2E0ILY EB8ARZ PA0RDT.
This is the first LF opera transmision since November 2016. DOCXO, AD9850,
arduino uno, TC4426 keying the IRFP260n class E tx using a python script on
3rd reports from Domenico IZ7SLZ and Graham G0NBD who marvelled that the EB8 got a daytime reception. Several spots on psk reporter 2E0ILY G0LUJ EB8ARZ SM2DJK PA0RDT PA0LSB.
4th. Bernd, DF9RB reported on 10 receptions peaking -32dBOp at 0600 at DL0AO. Stefan DK7FC sent similar report.
5th. Checking out the 7400 XOR modulator module. Evidence of phase shifts seen on Markus spectrogram. 6th Try Ebnaut. DF6NM reports reception of a frame from K3RWR and 'HHERTZ' from here at 2300. Running 50 W to big rl. Now try 10 watts... Then 4. Decodes by IZ7SLZ, W1VD, VE2IQ (Carrier detect),K3SIW and DF6NM and W1VD who decoded the QRP (4 watts) transmissions. 7-8th: EbNaut 50 watts, 7 chars, 8K19A, 608 3 s symbols. rx at DF6NM,K3SIW,DL0AO (137.477 kHz, 7 Chars, 8K19A, 3 s symbols, 608 symbols, starting h:00 ut) 17th. Continuing wiht EbNaut. The class E TX is holding up well. Received by DL7FC, the EbNaut autodetectors at DF6NM and DL0AO. Report from Marco DD7PC for the transmissions on the 14th. 18th. High SWR and Hot heatsink on TX... aerial had been grounded by wx (ice,wind). Last EbNaut message rec'd at DL0AO at 0700.
Here's the low power setup before the gps upgrade. Centre: B+ set to 20 volts with variac on the power supply as seen on meter. Below an arduino programs an ad9850 via 10 pos'n switch. The dds is clocked by an oscilloquartz 10 MHz DOXCO. Front of dds: BPSK modulator module comprising a 7400 configured as an XOR gate with leds showing in and out. Front of modulator: 2n222 and tc4426 keying and driving stages; left: a class E 100w TX for 630m, collecting dust awaiting revised RBR4 at the moment) left: Admy. Patt. key. Above: class E for 2200m. Same one used in 2003 experiments but sith IRFP260 instead of IFF640 hexfet. The former has a lower fatality rate.
19th. Big RL tangled in tree tops by wx. Clipped the tower tap on coil; carrier restored 1500ut.
(Thanks to DF6NM for the above plot)
and this summary. 21st: daytime copy on grabbers. 22: gps disciplined carrier at 2015 ut today. 23rd good copy at K3SIW. 25th: EbNaut messages copied by K3SIW and W1VD. 26th. 18 dB Eb/No Rank 0 report from K3RWR. 29th TX off 2300ut. Scaled the hill in a raging blizzard at night to switch from LF to MF.
29 Nov 2018. Switched on the power supply for the home brewed amp and
continued with the 50 watts QRSS30 traNsmissions. A fortnight ago,
the far halyard on the big RL failed, bringing latter to the ground.
Feeding the tower with the Decca caused the far halyard on the
low (VLF) RL to fuse, bringing it to the ground too. Also had to
fix a mess of charcoal that was once a cleat anchor. 30 watts of VLF back
on to the low RL and 50 watts on the big RL again.
Strong sigs seen on N1BUG grabber without amp during test transmission
using just the tc4426 driver connected to the coax!
18 Nov 18. The far halyard was replaced. The burnt halyard of the low RL was repaired and the insulator raised again. Energising the tower with LF when the big RL is down is not kind to the VLF halyard. Tuned the coil back to 1.7 mH from 2.6 mH and ran the Decca on 137.777 with some QRSS30 and QRSS60.
2 November 2018. 1 or 2 modules of the Decca to the high RL (20x30m)
3rd. switched to CW on 136.5 kHz following report from Roelof that the
QRSS was audible.
Markus' high resolution spectrograms showing 5 nights of carrier and one of QRSS100 with th keying sidebands just visible.
Markus sent this capture from the club station DL0AO.
Meanwhile to the west, Gary K3SIW captured a few letters.
And to the East, Alex RN3AUS does well too. The QRSS on 1 Nov was sent with 1 module of the Decca; about 150 watts, 2 amps of RF to the antenna.
4th: CW ended when a windstorm severed the far end halyard and shattered an insulator. The rotated "L" is in a heap on the ground. Fortunatly Roelof was recording: PA0RDT audio Linrad, 12 Hz SDR, Miniwhip. 5th: N1BUG reported clear cw reception at time last night. The tower was used without top loading but was base loaded with 2.7 mH.
12 Sep. hf heard by n1bug and here too 137.0 khz. 13 0040 tx on after shutdown for Lightning. 8Sep. Demo t vo1hp get-together at freshwater. Pwr increased to 15 watts. Copied in st brides (135 km )
2 Aug. Continuing with 4 watts on 136.4 kHz to the big rotated L. Copied by VO1FOX at Signal Hill. 9th VO1LM heard weak sigs. 2200ut. Remote rx Whitbourne: rx with ft817: burhans+ loop sm6lkm converter and pa0rdt mw. No copy with mw and 817 or lkm + eco whip or lkm+loop. Latter 2 appear to be limited by noise.
9 July 137.777 kHz QRSS100 200 watts to big RL. Captured on DF6NM grabber along with R7NT who was up 0.5 Hz. 10th 4 watts 136.38 kHz CW to big RL. Aerial earthed 12th, 15th.
13 June 2018. QRSS100 on 137.777 kHz starting ~0015. Seen on DF6NM grabber.
21 March. A few days testing on 137.777 kHz started as soon as the aerial was raised. Moved to VLF (8.270075 kHz) tonight.
Operation Schedule / Signal Reports 2017
24th-25th. ID and Seasons greetings. Seen on DF6NM EW6BN DM4TR and YO/4X1RF Grabber. Reports from DF6NM and RN6AUS. Marcin SQ2BXI capture on 25 Dec. Gary K3SIW capture on 26th. Reports this strong from the west are rare. Aerial icing and wind so TX off. 29th/30th. 3 amps. Report and captures from from RN3AUS/Alex and RA1ADF/Sergey for whom this was his first reception of a transatlantic signal at all. Larry K9ZBU (FN21WR) got a strong ARGO copy this morning. 30th aerial retuned for 477 kHz. September
11 unmodulated carrier , 1 decca module. 12 carrier 2 decca modules.
DF6NM capture for 01 July. 01 Jul evening: A Canada Day message was sent. It was copied by DF6NM DJ2JP and PA0RDT (audible in 15 Hz).
15,17 July. 2 or 3 Decca modules feeding the 10x100m RL aerial QRSS100 on 137.777. IZ7SZL gets a strong peak after 4 hour integration. Joe DF2JP gets a weak trace of the sigs amd reports were received from G3XDV,PA0RDT (audible) and Vinny DL6II. This was a 20th anniversary event with several EU stns transmitting to comemmorate.
28,29 June: QRSS100 one and 2 decca modules respectively to the small RL. The far tower holding the big RL that collapsed during the 159 kph wind gusts last winter has been fully erected again. An eyebolt that was sheared off last winter has to be replaced on the main tower.
April. Received DF2JP 350 w to 1nF aerial. Speclab qrsss60 817/lf-10 sw bev 8th.
sl cap at 0445
10th 0100 capture of DF6NM
March: 2nd CW Beacon 3 amps on 136.5 kHz. 2300 utc. Heard by VO1DV in Foxtrap but nil at VO1UG, VO1VCE, VO1UL.
10th. Markus reported on the carriers for the past 3 nights. 'It is well visible all over Europe, e.g. on Chris' uHz grabber in Bucharest. He noted the first was about 2 mHz high. The Raspi3 was not following commands to disengaging the AD9851 clock multiplier. A uno was used and the carrier is near the expected 137.7770002 kHz. The clock is a 10 MHz doxco. 11th. Trying again for a distance record. 3.6 amps. to the big RL. The attempt to link the antipodes was brought to a halt when the 50' mast supporting the far end of the big RL came down in 158 km/hr gusts. 12th: ad9850 comparator output via 4426 to the decca. Using a box from the Loran site (formerly used for freq calib). between the MAR3 and the DDS clock input. The output now seems clean on the NM grabber. 17th. testing ref osc amp(2n3904, 74LS04) ad9851 & raspi3. checking on df6nm grabber. Good line on 137.77701 kHz as expected. Misc tests of DOXCO amp, dds, rpi3 software -- seems all ok on df6 high resolution grabber.
16 Feb. 2 Decca modules fed by ad9850&onboard comparitor + 4426 driver. arduino freq/phase word and cw message generator. and 20x100m aerial. Reports from DF6NM (17th) and G3XDV: 20thr- solid 2330-0900 reprive 0955-1010 and DF2JP. 25th 2 modules 3 amps to RL which was raised today from hoar ice grounding a couple of days ago. On till evening of 26th. Outstanding reports from RN3AUS Alex, Yuri EW6BN and Markus DF6NM with whom the signals were audible. 28. Strong sigs at DF6NM and DK7FC as reported on reflector, along whith Yuri EW6BN who sent this: 28th-01 Mar. 5 WPM CW. 2 Decca modules feeding the big RL. Received by PA0RDT but a 'tad weak for aural reception.'
01 Jan. ~200 watts from 1 decca module to the big RL. High SWR due to ice on the aerial. QRSS100. Thanks to instructions, software from Markus, the EbNaut messages received here using spectrum lab were decoded on this side of the pond today. The messages were from DF6NM and IW4DXW. Tangles is delighted to get a reply from Gizmo at last. 2nd. Joe DF2JP forwards specrograms showing very good copy of today's 150 W QRSS100 transmissions to an iced wire. RX,SL, rsNTP is set up for sigs from DF6NM IW4DXW and IZ7SZL. 3rd. Running Pauls ebnaut_rx and Markus ifft and viewer resulted in a decode. Still working on the other 2. RX setup. SW beverage (bidirectional) LF10 preselector FT817 and SL etc. 5th. QRSS100 137.777 received by DL4EAI tnx to DF2JP. 7-8th Report of traces nr Moscow from RN3AUS. R7NT reported traces by EW6BN and RN3AGC. Also seen on the SP5XSB grabber. Strong sidebands at 0.1 Hz on grabbers of DF2JP DF6NM, H. Wolff. AD9850/arduino/2 Decca modules, 3A RF to 100m RL at h~20m. 8th. 2100~2300 then QRT following apparent arcing. 12th. Repaired burnt halyard. Damp nylon, RF + wind are not a good combination. Traces near Moscow reported by Alex RN3AUS and a very good copy by EW6BN Yuri.
Operation Schedule / Signal Reports 2016
December. BPSK experiment. TNX DF6NM.
The signal spectrogram is centred the current's frequency of 137777 Hz,
for 20 less than t lss than 32 hours with phase
reversals at intervals at T=5(t-10) seconds.
PSK frame period increases linearly with time at 5 seconds per hour. 2nd: EbNaut sigs received by DF6NM, DK7FC and detected by IZ7SZL. Tonight try 1s symbols and Domenico reports 3 decodes, Paul grinds some additional wav files and gets more deoodes. 4th. Try a pilot tone (raspi1B + DDS60 (AD9851) and get a partial of G3XDV.
9-11th. Trying (with much assistance) to receive ebnaut from DF6NM. (137490 Hz 8 characters, 8K19A) Success: a .txt file from Spectrumlab was decoded by Markus after tinkering with the time and frequency of the recorded signals. Amazing! 24th. Seasons greetings sent on 137.777 kHz. 30 Dec. Ebnaut sigs copied here using Spectrum Lab/ Ft817 and LF10 , Beverage. Markus processed text files to decode his signals. rsNTP was inadvertently not engaged. 31. Another reception experiment. Success reported by Markus who reported that DF6NM AND IW4DXW were decoded in the txt files received here. Seasonal message on 137.777 using the arduino/ad9850/decca. Raspi1b on the blink.
Nov. 3rd Copied G3XDV on 136.172 kHz.
5-6th.200 W 2 amps to 12mx100m RL. Decode at DF2JP. R7NT reflector report:
2016-11-06 06:29 VO1NA 4563km 137477.000Hz 2mHz -35.4dBOp 92% 19.1dB DF6NM (7)
2016-11-06 06:29 VO1NA 4421km 137477.000Hz 2mHz -37.8dBOp 97% 19.8dB DK7FC (6)
Also psk reporter: G3XDV. 07. 500W Op32. OPDS decodes at DF2JP DF6NM DK7FC YO/4X1RF, pskrep: G3XDV PA7EY and DL-swl. (standard local time started 2 am today) 8-11th. OPDS decodes:
2016-11-11 07:00:00 VO1NA 5886km 137476.824Hz 2mHz -46.4dBOp 99% 17.0dB
and thanks to G0NBD:
via web-sdr at AB1KW located Concord, NH 03301 USA
00:04 G0NBD/EASTUSA Op32 Deep Search -42 dB in 1476.9 Hz
00:04 PA7EY Op32 Deep Search -42 dB in Amsterdam
00:00 F6CNI Op32 -40 dB F:9% in JN19QB
00:00 G3XDV Op32 -29 dB F:1% in Welwyn
00:00 DL-SWL Op32 -28 dB F:1% in 1476,0 Hz
13-14 Nov. OP32 500 watts 4 amps to the big RL. 137.477 kHz.
Lovely strong sigs appearing on the DF6NM grabber as of 2238. 14-15Nov.
SM2DJK 2200m OPERA 4605 km 23:04:23
DL-SWL 2200m OPERA 4412 km 00:00:00
PA7EY 2200m OPERA 4044 km 00:00:00
G3XDV 2200m OPERA 3730 km 23:00:01
G0EZY 2200m OPERA 3634 km 00:00:01
G0KTN 2200m OPERA 3597 km 00:00:00
G8HUH 2200m OPERA 3560 km 23:00:02
M0DSZ 2200m OPERA 3519 km 00:00:00
---- TNX G0NBD
SV8RV reported that there had been several OPDS decodes since the 13th and many times by EA3HNK.
16th. From Alex RN3AUS:
2016-11-16 06:00:01 VO1NA 5810km 137473.743Hz 5mHz -45.3dBOp 82% 15.4dB
OPDS detections: DF6NM SV8RV YO/4X1RF ; PSKREPORTER: F6CNI 2E0ILY G3XDV G0EZY PA7EY SM2DJK DL-SWL
22?-27 Nov. QRSS100. Module 1 on the blink. A 15 A (white ceramic) fuse had suffered a mechanical (not thermal) failure. 28th BPSK 1 decca module. 28,30th. BPSK experiments
09-12 Oct. 2 modules 3 amperes to the big RL (100m at mean h=20m)
Good reports from western EU with traces from the East. Thanks all!
2E0ILY DF2JP DF6NM EW6BN F1AFJ H. Wolff RN3AGC RN3AUS and SQ2BXI
13 Oct. Reports from WA3TTS F6CNI F1AFJ RN3AGC and 2E0ILY. 13-14th: A
sudden drop in signal levels. The Kyoto dst plunged 131
points and CFH could not be seen on the DF6NM grabber at times.
CFH has been active for several weeks after a long hiatus.
SQ2BXI on the 12th.
19-20 Oct. Seems CFH is now QRT again. Tried OP32 on a raspi after the ardino went on the blink. A nice report from Joe DJ2JP for whom this was his first TA OP reception. He noted the strengh was exceptional. 2016-10-20 04:33:36 VO1NA 4189km 137477.004Hz 1mHz -40.7dBOp 100% 18.2dB This is surprising as the small RL was switched in with only 1 Decca PA after the big RL developed a huge SWR around 0030 utc.
22 Sep. CW on 136.5 kHz 500 watts 4 amps to the 2 RL's. A spectrogram was received by PA0RDT but Roleof reported the sigs were too weak for an aural reception. The TX is on again. 09 Sep. Comparison of 12x100 and 20x100 RL. The latter being about 12 dB better at a range of 60 km. 14-19 Sep. Reports from DF6NM (along with strong spectrogram of CFH) EW6BN DJ7FC and DF2JP. Also a clear capture from SQ2BXI.
2-3 Aug. OP32 150 watts 2.2 amps to the 12x100m RL. DK7FC reported
good freq accuracy (137.477000 kHz). Also seen on DF6NM OPDS.
4-8 Aug. OP32 off for 9th due to lightning. 10th 500 watts 4 amps.
to the 12m high 100m long RL. Reports for the past week: G3XDV DF6NM
and IZ7SZL (10th).
2016-08-10 03:00:00 VO1NA 5426km 137477.000Hz 2mHz -49.4dBOp 100% 15.4dB
TNX to R7NT for forwarding reception info of F6CNI PA0OCD. PSKREPORTER:PA7EY, G3XDV LA3EQ. 11th. F6CNI good reception. 11-12 Aug. New aerial: higher 100m rotated "L". 500 watts 3.8 amps 1.48 mH tuning inductace. QRT for abt 1 hr due to lightning ~0300. 14th reports from IZ7SZL and M0OSZ despite the mismatch and using only 1 Decca module 2300 utc. pskreporter: PA7EY G3XDV F6CNI G6AVK M0DSZ. 2300 Starting OP32 again. RL properly tuned, 2 Decca modules, 500 watts 3.5 amps. 15th. Reports: R7NT(QSP reports) f5wk df6nm(qsp report from yo/4x1rf, sv8rv) ik0vve, m0dsz and pskreporter: PA7EY F6CNI GW4NOS PA3ABK G0LUJ SP5XSB IK0VVE LA3EQ SM2DJK. Tonight: EbNaut 0.2s 4K19A 771.2s message starting 2330 and every 15 mins. 500 watts 3.6 amps RF. 17th. IZ7SLZ decoded the 155 character message received at DK7FC. 18th-20th. EbNaut 137.477000 kHz. 18 DF6NM copies the 54 character message twice but only 0 and 2.4 dB Eb/N0. Better reception on the 20th by NM & FC. 27-29 Aug. cw beacon swtiching between low and high 100m RL aerials. DF2JP grabs show high RL slightly better. Whitbourne 60km bearing 240 degrees has high RL at 10-12 dB better. (using 1' 30t loop + Burhans preamp). Very weak or nil with miniwhip + FT817 which is deaf on 2200m without a preamp.
18-23 July. 500 W 3.7 A QRSS100. 2330-0930utc. Reports from PA0RDT(heavy QRN) , DF6NM(quite readable) , DF2JP(strong) and DK7FC(good) and K3SIW(vy weak). 22 Good copy G3XDV. Best just before dawn in lower eastbourne QRM. 23. Reports from Andy (measured QRG as 137,777.009+-0.01Hz and Max IK0VVE. Off tonight due to risk of lightning.
10-11 Apr. 1 and then 3 decca modules to 100m wire at 12m.
Reports 10: df2jp dk7fc pa0rdt gwwgt 11: df2jp g3xdv pa0rdt(aural reception)
13th Max IK0VVE, df2jp , pa0rdt (not audible this time)
past week:one decca module to the 100, wire at 12m. raised big rl but tuning trouble so brought helix to shack for checkup 27 Mar.
20 March. 1 module of decca. high swr at tx end but good at RL feedpoint (??) Strong signals reported by DF2JP (traces of XIL too). Seen on DF6NM DK7FC G4WGT grabbers. 21 March. On again. Still high SWR but only at shack end??!!. 23 Mar very high SWR to the RL. Later noticed it was on the ground again but not before sigs were detected on the DF2JP grab. Switched over to the low wire. Good clear spectrograms at DF6NM for the QRSS50 sigs again tonight.
6 March. RX DF2JP on 136.173 kHz. Joe was using 1.2 kW 5 A RF to a RL 20m vert 102m horiz 850pF
Joe's sigs above. RX: NW bev LF10, ft817, ARGO V1 b143
27-28 Feb. RX set up 136.710 kHz ARGO QRSS60/90. Weak partial copy
06 Jan 2016 Resume carrier at 0900-1200 UTC for andipodes detection attempt with Edgar. A QRSS100 ID was received by F1AFJ late on the 5th. 06-07. Strong reception of the dot100 at F1AFJ. 0900-1200 carrier 3 decca modules, 100m RL in attempt to send 2200m photons to Edgar in VK7 on the 6,7,8th. 9-10th. Strong captures at F1AFJ and G4WGT. No sigs seen on Edgar's VK7 captures. Nice captures at DK7FC and DF2JP along with fuzzies (due to DCF39 and not the ATU frame arcing and ablaze) 25-28 QRSS100 for ~48 hrs. Reports from DF2JP and F1AFJ. Traces seen on the DF6NM grabber for almost the whole period including daytime.
Operation Schedule / Signal Reports 2015 Paul and Markus' phase/magnitude data of dec 2015.
December. Various tests with EbNaut. 5th 131 characters sent in less
than 11 minutes. Received by PN and DF6NM on 4th-5th. 5 second symbols
starting morning of 5th. Received by PN during day.
Pauls plot. Offset = -255 uHz.
November 01: RN3AGC veak trace.
04 QRS100 5A RF good strong copy at DF2JP.
05,06 OP32. Reports of good decodes at DF2JP, IZ7SLZ and SV8RV.
Pskreporter log: G3XKR DF2JP EI8JK G3XDV 2E0ILY. Thanks to all.
07. Reports of OP32: DF2JP G3XDV IZ7SLZ SV8RV TF3HZ G3XKR PA7EY SP5XSB
SV8RV DK7FC. Also DF6NM who confirmed the carrier phase was adequate for EbNaut experiments.
08 QRSS100 137.777 kHz 09: OP32 137.477 kHz.
09: OP32 Reports from G3XDV DF2JP IZ7SLZ and the usual insightful
commentary from G3NYK explaining the good prop. in light of the -80nT
DST and the poor reception at TH3HZ. 2 hops, but sometimes
1 and 3 as well... OP32 again tonight.
DF6NM analyses the signal. A 0.7 mHz error and temporal fluctuations of 0.5 mHz. The TX was off for a while before 0304 utc to prevent interference to a scope. Markus observed a 0.1 mHz error in LORAN sidebands near 137 kHz which was likely due to Doppler from ionosphere motion. Thanks to Chris 2E0ILY Iban EB3FRN Ulrich PA3EY and Graham for reports and email and about a dozen spots on pskreporter for the transmisions on 10-11th. 11-12: OP32 5.4 amps to the 100m wire. DOXCO was adjusted today (first time in 2 years) and there was some tower work -- top guy saddled and a new halyard.
11-12th. 5.2 amps op32. Frequency correction apparent on DK7FC IZ7SLZ and DF6NM sites.
18th. DOXCO restored to orginal calibration (5.29 volts on VCO). A rounding error (TNX DF6NM) causing the OPDS freq to be low by 0.7 mHz. was corrected. Phase shift experiment and QRSS transmissions.
21st. Finally sent a phase shift across the pond! Much jubillation and cat excitement. The event was heralded by evidence from Markus (Germany) and Paul Nicholson (UK).
Paul's spectrum. Earlier today the more recent 100m wire was raised again.
22nd November. First attempt at EbNaut (137.777000 kHz 8K19A 13 chars 896 symbols 2s duration 29:52 total sequence time) resulted in transatlantic disappoint, a disgusted cat and profanity. Software engineering glitch? 24th November. The cat's name crosses the pond as confirmed by DF6NM P. Nicholson and IZ7SLZ. 25th EnNaut received by P. Nicholson and IZ7SLZ. 26th. PN, DF6NM and G4JNT. 27th. TX on 2000 using CHU for timing again. 29,28,30. ebnaut including day transmission. Night decodes by P.N. and DF6NM. No daytime copies though Paul could see the carrier.
30th -31. DF2JP strong, and RN3AGC traces of sigs.
29th. G3XDV G4WGT and RN3ACG kindly provide traces and reports.
26-27th. Mucking about with the VLF/LF/MF exciter followed by a test run to ensure it still works on 2200. 5 amps 100m wire. Fuzzies at first (seen on DF6NM G4WGT and DK7FC grabs). Then removed exciter xfmr and put big xfmr (tnx G3LDO) before tuning coil. Seems to have reduced fuzzy sigs. Report of strong (audible 0100) at DF2JP. Traces reported by Alex RN6AUS in Moscow.
20-21st OP32 5 amps RF till 0157 then 2.2 amps. 6dB drops were seen on the DK7FC and DF6NM OPDS reports as well as 1 mHz freq. accuracy. SV8RV copied OPDS 2 frames (QRA 5905km). G0NBD provided compliments on the signal strength as well as updates on the PSKreporter. Thanks to all for the grabs/reports/ encouragement! OP32 reports from LA3EQ PA3ABK DF1VB PA7EY G4WGT DF2JP and G0NBD relayed by Graham.
19th Another strong cap by PA0RDT with traces 1.5 hours past dawn.
PA0RDT capture 0656-0816 2 hours after his local sunrise at 0609.
DF6NM high res spectrum showing sidebands, phase coherence, freqency accuracy and possible post dawn peak.
13 Reports from SV8CS and DF2JP 14. DF2JP
17th. Audible sigs at PA0RDT, despite (recent) poor conditions following a dip in DST.
11-12 Oct. 3 Decca modules engaged and no fuzzies or incoherent phase seen on the DF6NM high res grabber. Nice caps seen on G4WGT Dk7FC grabbers. Joe DF2JP sent a nice capture without fuzzies. The syth, u-processor and keyer/divider/driver were partially dismantled and reassembled with more shielding in an attempt correct the phase/freq instabilities. It seems there may have been some ingress of carrier to the synth.
7-9 oct. 200 and 500 watts. Fuzzies only at higher power.
5,6 oct. DF2JP observes fuzzy signals. Iban EB3RFN has clear sigs on the 6th. (lower power was used)
28,29 Sep. Reports from G3YXM (bit of wobble on frequency) and DF6NM or phase incoherence.
23-24 Sep. 3.5 A RF to the 100m wire at 10m. QRSS100.
16-17 June. 3A QRSS100 2224-0447 utc
4-7 June 3A RF QRSS100 100m wire. Report from DF2JP 4,5th. 09 June 2015. QRSS100 again. Seen on DK7FC, DF6NM & G4WGT grabbers.
9th May. DF6NM notices the op32 carrier is unstable. Aerial problems again or is the exciter misbehaving?
8 May OP32. G3XDV 3720 G3XKR 3467 EB3FRN-1 4250 DF2JP 4188 SP5XSB 5069km
6-8 May. 3-4 A RF to 100m wire. QRSS100. Report from Joe DF2JP on 7th.
20 April 2015. Rebuilt Decca power supply. High SWR on the first day but reduced L for better tuning on the 21st. Reports on 20, 21 from DF2JP with good signals. 3 to 4 amps to the aerial 22,23 and 24th. 29 OP32 3 amps RF. df2jp joe, eb3frn iban , g3xdv mike, g3xkr sp5xsb. 31st. Testing CW on 136.500000 kHz. ~10 watts to 100m wire. Not heard at 60km with miniwhip.
March 01 3 Decca mods. 3 apms RF QRSS100 on at 2047. (still daylight) Shortly after TX on air, DF2JP reports improved sigs and on the morning reports" the most outstanding signal I┤ve ever seen from your side." The sigs were audible. Good reports from F1AFJ (>20 dB over noise) GW0EZY (fuzzy sigs) although not sure why they were fuzzy G4WGT too(sigs nice & clean). Lovely sidebands were seen on DF6NM's high resolution spectrum.
Henny's PA3CPM capture shows sidebands and fuzz!!??
2nd: More reports of fuzzy signals from PA3CPM, G4WGT, GWEZY and DF6NM.
A trip up the hill on snowshoes in the dark and cold last night (3rd) revealed the cause of the problem. Wind had blown downlead against the wood ATU frame causing part of the latter to go up in smoke.
DF6NM reported stable signals again last nigt. 4 Mar. Reports: PA3CPM DF2JP YV7MAE DD7PC F1AFJ. No fuzzies this time. A greyline fadeout was observed by DF2JP followed by a brief return to 1041 UTC. 5-6 Mar. Reports from PA3CPM DF2JP and PA0RTD with whom the sigs were audible. TX off 1112 6th. Another greyline fade/return at 2JP. TX on 2111 6th. 7th: reports from PA0RDT, PA3CPM and another daytime reception up to 1200 by DF2JP. The TX was switched on again today at 1306. 3.8 A RF QRSS100 to the 100m RL. Daytime copy at DF2JP, W1VD and W1DEX. 8th. PA3CPM PA0RDT(audible) EW6BN.
DF2JP daytime capture. Local noon. 9th another copy by DF2JP and audible in 500Hz B/W at PA0RDT with a mw antenna in the hawthorn tree.
14-15th. A test carrier from 2326-0141 followed by QRSS100. Reports from RN6AUS,PA3CPM, DF2JP and G4WGT. Good copy on EW6BN grabber.
19-20 Mar. Eclipse experiment foiled by mother nature: snow, iced and detuned aerials and to top it off, poor conditions! Reports from PA0RDT , DF6NM (no trace of sigs) and PA3CPM (a weak trace).
23 Feb. QRSS100, 2 amps from 1 Decca mod. 24: 4 Amps RF from 2 mods. Reports from F1AFJ, G3YXM, DF2JP. 25: High SWR. 2 A RF. 26th. Good copy at VE2IQ despite poor signals to the west from the 100m wire. Good copy by Joe DF2JP. Also seen clearly on the F1AFJ G4WGT DF6NM and DK7FC grabbers. 28th. 1 Decca mod to the 100m wire.QRSS100. Report from Joe DJ2JP of weaker sigs.
01 Jan. 4.5 amps to the 100m wire. 137.777000 kHz. CW 12 WPM.
We start the new off with a new milestone in amateur LF TA tinkering.
Hartmut copied the 12 WPM in QRSS3 mode, a record speed for
transatlantic LF for this station.
F1AFJ reported strong sigs and mentioned QRSS3 QSO is possible.
02 Jan. A new wire is installed and tuned during freezing cold wx.
500 watts 4 RF amps. 12 WPM switching between the 2 aerials in hope of
getting an aural TA on 2200. Seen very weakly on VE2IQ grabber and quite
strong on F1AFJ, DF6NM, H. Wolff, DK7FC, G4WGT grabbers.
03 QRSS100 200W 2.2 amps: Good reception at DF2JP, F6HCC.
04-05 Using Hartmuts grabber to compare the 100 metre aerials. Signals
of less than 1 watt were detected on his grabber.
New aerial down on treetops due to high winds.
06. OPERA32 200 watts 2.2 amps then increase pwr. 5.3 amps. Old wire aerial.
F5WK 4017 km 10:32:29
G8HUH 3550 km 10:32:28
K3SIW-1 2848 km 10:28:05
KA9CFD 3103 km 10:28:04
GW0EZY 3490 km 09:22:30
G3XDV 3720 km 09:18:04
2E0ILY 3533 km 08:47:26
G4WGT 3519 km 08:43:06
KU4XR 2889 km 08:08:05
LA3EQ 3958 km 07:33:05
SP5XSB 5069 km 07:02:27
W3NF 2149 km 02:18:00
Also DK7FC and DF6NM on OPDS. 07-08. 4.8 amps RF. Thanks to PSK reporter for the following on OP32: K3SIW KU4XR G8HUH F5WK WD4KPD GW0EZY G0KTN DL-SWL DF6NM 2E0ILY F6CNI G3XDV W1VD(false detection according to Jay) LA3EQ SP5XSB DB1EPO G6AVK SV8RV 10 Jan: Joe DF2JP gets a 'nice copy' in the morning. 11-12 Jan. New 100m wire raised again and tuned with 1.6 mH. Tried QRSS100 on 137.777 kHz then OP32 on 137.477 kHz. 3 Modules, 4 A RF. 12-13: Report from Terry, GW0EZY: Good QRSS signal from you last night - probably best I've seen. 13-15 3.5 amps to new 100m aerial. More reports of strong sigs:
Also VE3EAR (nice to hear that sigs going west. This had been a problem with the original 100m aerial) F1AFJ SP5XSB EW6BN RA3ACG DF2JP VE2IQ DD7PC F1AFJ (25 dB above noise) F6CNI( 40dB, audible) OK2BVG RN3AGC and RN6AUS on the 14th.
15 Jan.3.5 amps to new 100m wire. 16 New aerial detached mid-callsign at 0000 utc 17th Jan. Noticed missing signal on DF5NM grabber. Put on the original 100m wire and ran 200 watts, 2A. Reports from G4WGT F6HCC F1AGJ F6HCC and H. Wolff. Took up some slack on the old wire halyard to prevent pulley chafing through the halyard. There is still a problem with the 1.6 mH helix so tuned new wire to 477.7. Off air on 2200m 17 Jan.
Operation Schedule / Signal Reports 2014
December 24-28. 200 watts and then 500 watts 3.5 amps to the 100m wire. Christmas message was copied by DF6NM F6CNI EW6BN and F1AFJ. Also seen on the G4WGT grabber. On the 27th F6CNI reported 30 dB S/N with audible signals. 29-31. Reports from F1AFJ F6CNI and H. Wolff.
1st. 5 Amps to 100m wire. dot 100. Received at 'audible' levels at F6CNI, 25 dB above noise. Good copy at DK7FC. 2nd. DF2JP reported good sigs and fadeout an hour after his local sunrise. 3rd. TX on 1938-0832. F1AFJ restarted his grabber abd reported sigs 'are visible all the night' from 20:30 to 07:30 at 10-20dB over the noise. 3th. TX on 1948. Received at F1AFJ 20:10 to 06:50.
An early reception at F1AFJ. Joe DF2JP, using a loop and and an ALA100HG preamp reported audible signals just before sunrise. 5th. Good copy on TF3HX YV7MAE EW6BN DF6NM G4WGT grabbers. Also DF2JP had traces to strong sigs 2100-0620. TX on again at 2000 utc. 6th: reports from Andy RN3AGC (sigs received on the 4th and 5th) DF2JP who is uploading caps to a dropbox, F6CNI Andy RX 2050-0650 utc, EW6BN and a trace recorded by Alex RN3AUS near Moscow. 8 DF2JP (aud sunrise) F1AFJ OK2BVG RN3AUS G3XDV: VO1NA was good copy all night on 137.777kHz, continuously from 2040 to 0730UTC. Also, thanks to LWCA message board: 2 Oct WA3TTS 5 K3SIW WA3TTS 8 Oct K3SIW W1TAG. 19 Oct. OP32 transmissions 137.555 kHz 240W 2.2A. 2 receptions from SV8RV Dionysios 5905 km, 3 from Terry GW0EZY and many on the DF6NM grabber:
2014-10-19 06:14:26 VO1NA 4585km 137555.000Hz 2mHz -37.4dBOp 100% 18.4dB
20 Oct. OP32 5 A RF. Reports from IZ7SLZ and SV8RV. DF6NM and G0NBD advise via the RSGB reflector that the 2200 OP band mas moved down. A new QRG between 137.455 and 137.545 is needed. Hope to replace 4020 with faster 74LS161 for 630m operation with docxo. OP on 630 also moved 478.50+-.05 kHz 21st. 22nd. New frequency for OP32: 137.477 kHz. Reports: G0EZY; seen on DF6NM and TH3HZ grabbers.
23 Oct new exciter on line with 4011 keying stage. 180 watts/2.2A RF on 137.477 OP32. Reports: G0NBD (relay) G3XDV, GW0EZY G0KTN. Monitored on TF3HZ, DF6NM and DK7FC OPDS. Last 2 gave QRG as 137.476999 kHz. 28-29 Oct. 4 amps to 100m wire. Reports OPDS and PSK Reporter: LA4ANA LA3EQ SM6BHZ DL-DWL F6CNI GW0EZY G4WGT G4MDH G3YXM G0KTN G3XDV SV8RV G8HUH EW6BN DF6NM (UNTIL 0733UT) TF3HZ W1VD W1TAG/1 30th. G8HUH and F6CNI, who reported audible signals.
30th Good reception at EW6BN.
1st. 5 Amps from the Decca with 3 PA's engaged. 100m wire at 15 m high. F1AFJ: "monsterous signals" maybe saturating his agc. OK2BVG and PA3CPM report very strong signals. EW6BN reported good sigs too. F1AFJ sends an MP3 of the audio. Incredible to actually hear the signal! 2nd. Weaker sigs copied by F1AFJ and PA3CPM.
After months of delay, new 40 amp 600V rectifiers are installed in the power supply for the Decca 5501. Hopefully they will survive longer than the single-unit bridge rectifiers did. A 234/80V 18A xmfr is used with a choke input filter. 27th. QRSS100, 500+ watts, 4 amps to the 100m wire. Reports from DK7FC G4WGT. 28th. F1AFJ and Lubos, OK2BVG, and traces reported by G4WGT in heavy QRN and Yuri, EW6BN. 29th: F1AFJ copies 30 dB over noise at audible level. OK2BVG copies a full call sign
and Henny PA3CPM sends
a spectrum showing very strong sigs, and a strong capture were received by Gary G4WGT and Stefan DK7FC. All 3 Decca modules were engaged with 5 amps of RF. The Decca PA's became quite warm, as did the 1.44 kVA xfmr, but the rectifiers, cooled by a small fan on the heatsink, remained cool. 30. Another audible reception by F1AFJ
and a report of less clear sigs was received from VE2IQ, 1800 km over land to the west. 31. Good copies at PA3CPM and F1AFJ. An apparent frequency shift of 0.01 Hz was noted on the DF6NM hi res grabber. Markus explained that a computer issue caused the LORAN frequency lock to be lost and the free running xtal drifted down as it cooled. A record breaking July in terms of temperature has not resulted in excessive heating of the TX system except for the LV (25V 1A) xfmr which was too hot to hold.
1st: Running 80 watts from one Decca module (HT=40V). 1.2 Amps RF to the 100m wire. QRSS100 Phase coherent 137777000 Hz (as monitored on DF6NM high resolution grabber) Nice spectrum from Henny
Despite the high A,K indices (25,3), UW8SM, DK7FC, DF6NM and R7NT were copied last night. For RX, the 100m wire (usual TX aerial) was used. It has 2 mH of series inductance. The RX was the FT-817 without the external (35dB) preamp. IPO was engaged (to remove the internal preamp) and the AGG was off.
15 Apr. DF2JP DF6NM and DK7FC copied.
17-19 Apr. 70 w to 100m wire. DF6NM F1AFJ and F6HCC reported reception of the QRSS100 sigs. 20th. F1AFJ reports sigs along with those from XGJ , XES and XEB. The wire is covered with ice and the current is very 19th. F6HCC also reports sigs despite low aerial current due to icing. 23rd Reports from: PA3CPM F6HCC IZ7SLZ & F1AFJ (strong sigs) 29th PA3CPM F1AFJ KL1L (nil) 30th PA3CPM F6HCC (online DF6NM nice sidebands) and F1AFJ.
March 01,2 OP32. 3rd. QRSS100 50 watts, 1 amp to wire. 03 Gary G4WGT reports good reception. 04: 30 watts 1 amp. T=-10 C. traces seen in hi res spectra of DF6NM.
01 February. 4 watts output. Lovely clear copy at Hartmut's, Trace reported by PA3CPM. Poor copy on 4th but much improved on the 5th at PA3CPM. F1AFJ grabber showing good sigs. 7th G3XDV copies OP32 sigs. 9th G3XDV reports "Consistent signals from VO1NA (3742km) on 137kHz Opera32 last night. Nothing seen on the Opera software, but OPDS produced decodes at 0308, 0343, 0418, 0453 and 0603UTC, all around -40 to -43dB S/N." 11th. OPDS at DF6NM following power increase from 4 to 6 watts. Also TF3HZ. PA3CPM and DF6NM report copy and traces. 15 Feb. 16th. Wire is lowered in anticipation of sleet and wind storm. TX off. 18th. G3XDV requests stations to send some OP32 so raised wire but it is fouled by 2 trees. Despite the reduced height and loss of RF to the trees, W1TAG and W1VD report reception of OP32. 19th: increased power to 40 watts; 20 reflected. Copy seen at TF3HZ and very weak traces on spectrum at DF6NM. 20th. A weak trace and decode at DF6NM. 21: increased power a bit. 22: reports from G3XDV (opds reception only) and G0EZY. Up in the woods on snowshoes with axe. 3 trees down, 1 wire up. ~25 watts as of 2019 but high SWR in freezing drizzle. DF6NM reports a single OPDS decode. 23rd. Antenna now ice-free; current 1 amp with 50 watts. 24th Multiple decodes reported by G4WGT, DF6NM, and G3XDV. 25th GW0EZY reported 5 decodes using OPDS, 1 with Opera. 26: 6 decodes GW0EZY. 27 9 decodes by GW0EZY, 3 DF6NM and 2 G3XDV.
1 January: 400 watts to 100m wire. Henny PA3CPM Gary G4WGT. 3rd Reception XEB on 137.777, DF6NM and DK7FC on 135.172. DF2JP on op32. 3 Jan CW 450 watts 3.5 amps. Mains power rationing. 4,5: QRT as DOT power supply is wired for 234V. The 55 and 12.6 V 117V xfmrs are replaced by a sigle 1.5 kVA (Muskrat Falls) xfmr. Now not so bad blinking house lights! 6th 2000 utc: all seems well since 1900 UTC when CW started with 4.4 RF amps. Sigs can be seen on Hartmut's and Markus' grabbers. 7 CW again with only 3.5 amps out; today's warm wx changes Z of wire. 8th: QRSS100 9th: Rectifier fried at ~0645 UTC. Reports of "good signals" from PA3CPM Henny and Gary G4WGT, and relays from Alex, R7NT. 9th: It's back to the old 2003 system: low power, inaccurate frequency and phase incoherence. QRSS100 65 watts to the 100m wire. 12,13 Jan. QRP 5 watts 0.4 A. Traces seen at 438uHz at DF6NM. Copy at H. Wolff and TF3HZ grabbers. Perhaps the 1st QRP TA on 2200m from here? Using Decca with 12 volts 1 amp on its HV terminal, DOXCO referenced AD9851 divided by 16 and phase coherent keying.
Hartmut's copy on the 14th. Also reported by PA3CPM. 14-24th. Tried lower power while awaiting a new rectifier. Good copy at 5 watts and traces at 1 watt on Hartmuts grabber. Traces seen on the high res. grabber at DF6NM. Grabs seen at F1AFJ and TF3HZ. 26th. Increased B+ on Decca to 16 V. getting 37 watts and just under 1 amp of RF to the 100m wire. Also took in a bit of slack in the far halyard to ensure it wasn't getting frayed (save a trip up tower) and raised the mean height a bit. Good readable signals were relayed back by Henny PA3CPM. Also seen on H. Wolff, F1AFJ and TF3HZ grabbers. 28: Report from PA3CPM. Caps at F1AFJ, TF3HZ, H.Wolff, DF6NM, G4WGT. Power reduced to 10 watts today. 30. Excellent cap by PA3CPM. 31. Output reduced to 5 watts.
Operation Schedule / Signal Reports 2013
December. 1st: OP32 400 watts to 100m wire. 3-5th. Reports from Alex R7NT Graham G0NBD. OP grabbers: DF6NM TF3HZ F4DTL G0KTN G8HUH PA0A F5WK RN3AUS. 24th: The 2003 exciter was called back into service for a Christmas mesage. The phase incoherence, frequency and spelling errors were clearly seen on the DF6NM grabber. Reports also from DK7FC and G4WGT. 25th. Back to the 2013 exciter. 3.5 amps to 100m wire from the Decca. 26-28. Running dot 100 and looking at sidebands on Markus'narrow grab. Reports from G4WGT, F4DTK RN3AUS (weak traces nr Moscow).
Tom SM2DJK 28. H. Wolff. reports sigs at 2009 utc. 29 from R7NT Alex. VO1NA 137777 GN37or QRSS100; DM4TR JO61de 4569; DF6NM JN59nk 4566; DL-SWL JO52ho 4406 DK7FC JN49IK 4404; YV7MAE FK81bd 4202; F4DTL JN18fp 4010 Report of fat signal from DF6NM. F4DTL Nicolas and H. Wolff send report/capture. 30 Dec Alex R7NT reports receptions by DM4TR, DF6NM, DL-SWL, and other TX stns, QRSS and other modes. 31 Dec F4DTL Nicolas captures WE2XEB NY, WD2XKO NC, WD2XGJ MA, WD2XNS CT USA and VO1NA NL CAN PA3CPM sends report.
November 19,20. QRSS30 to 100m wire. Report of weak sigs on 137.777000 kHz by DF6NM on the 20th. 26-28th. OPERA32 135.555000 kHz. 29-30 OP32 again. Many reports including G0NBD DK7FC R7NT.
October: Reception experiments on 74.5 kHz using retrofitted XH100 RX. Much drift -- to be corrected.
Bob WG2XRS/4 in New York.
Stability better, sensitivity worse. 22 Oct 2013.
WG2XRS/4, 74.5495 kHz.
23 Oct. Seems the ref osc in the xtal oven is not a good idea. Try using the docxo ref...
WG2XRS/4, 74.5495 kHz.
That's much better... Now see if the TX still works.
24th. OP32 starting around 0040 utc. 450 watts to the 100m wire. Reports received from DF6NM, W1VD, DF2JP HF3HZ.
September: 8th. 450 watts to a 100m wire. Report from DF6NM: coherent, 137.777000 kHz; 10th: Capture from UW8SM:
18th: OP32 137.555 kHz : 10 ID sequences copied by DF6NM. 19-20th. Only one reception at DF6NM who identified and fixed a rx problem and received a dozen ID's the following night. Thanks also to Graham for his report and Spiros SV8CS who received the sigs across 4889 km as determined by DK7FC. Reception also at TF3HZ, W1TAG and W1VD. 21: Many receptions at DF6NM. Off air for next week. 27-31 OP32. Many reports: TF3HZ W1VD DF6NM YV7MAE GW0EZY SV8CS. 28 Oct 2200utc start experimenting with antennas.
July: Continuing Op32 at night. 7th: switched from wire to tower. One decode at DF6NM with 150 watts from Decca. L=2.67 mH but needs a bit of work.... 7 July: Put a piece of high voltage wire from a TV CRT in the beef-bucket coil enclosure. Now running 400 watts. 3 Decodes at 'NM on the Opds. 8th Op32 again. 400w to tower. 11 July. Reports from G3XDV and G0NBD. Summary
June: Trying a new signal source and phase coherence. DF6NM gives a positive report, but identifies areas for improvement wrt phase glitches and freq chirps. Accuracy not too bad: 137.77702 to 137.77704 kHz. Another daytime copy at VE1VDM at 840 km away. Traces starting to appear on F1AFJ grabber at 2330 utc. 3 June. TX still on. Report from Michel F5WK of chirp which is readily apparent against the loran line. Reception on F1AFJ grabber 2300-0450 utc. F1AFJ reception between 2320 (3rd) and 0420(4th). 4th. Checking for thermostat transients in the freq of the docxo o/p. Put a 6dB bjt amp between the docxo and dds. 5th: reports from G4WGT and DK7FC who received the sigs between 0050 and 0300 utc. Markus in a critical report said the sigs looked better and the QRG was "137777.0028, give or take a couple of 100 uHz." It also seems the chirp and phase glitch problems have been resolved. Thanks to all! TX on again tonight 2330. 6th. Andy F6CNI checked the stability and found better than 0.005 Hz over 2 hours. Jay V1VD switched the RX ant to get a strong copy as well. 7 June: Plans are made following discussion on the Blacksheep news group to try 137.555 kHz for Op32 experiments. 18 June. DF6NM measures frequency as 137.7770000 kHz. DOXCO and synth seem to be working well together. 22 June OP32 transmissions commence 0000 on 137.555 kHz. Receptions have been recorded at G3XDV G4WGT G3XDV GW0EZY PA0OCD DF6NM DF5JP and W1TAG. It seems the summer equinox TA path is open from 0000-0500 utc. Markus sends an informative spectrogram. The sigs are phase coherent, accurate and stable, and agile as we are no longer rock-bound to 137.777 kHz as for the past decade.
Particulars of the new station were sent to the Blacksheep RSGB reflector. 23 June. Reports of OP32 reception from DF2JP (using 1m rx loop) and DF6NM. 24 June. TX power reduced from 450 to 150 watts. Reports from Joe and Markus. 22-28: DF6NM detects sigs each night. 28: G3XDV copies. 29: DF2JP copies the Op32 but not G3XDV. 30 June Copy reported by DF2JP.
May. 24th on 1855 450W TX to see if it is reaching Vern during the daytime. 1831. Yes, indeed!
Reports from Markus and Jay.
19th Replaced fried rectifier in 60V 20A supply. Now running 450 watts to 100m wire. NA DFCW. Captures seen on DF6NM, TF3HZ, VE1VDM, G4WGT and W1VD grabbers 23rd. Workbench... still trying to improve coherence,stability, accuracy and agility of the long wave signals at this station.
Apr. 70 watts to the 100m aerial. Seen on the grabbers of F1AFJ, G4WGT and on the 9th and 10th, clearly on the DF6NM grabber, suggesting very good conditions.
Mar. Running about 50 watts. Reports from H. Wolff on 4 and 9th. 11th: HW captures sigs again along with XES, XGJ, XKO and XNS.
01 January 2013. Adjusted carrier freq. up a bit to just above 137.777 kHz because it had drifted down about 0.1-0.2 Hz since being last calibrated against the 5930 Loran sidebands. Transmitted new years greetings using QRSS60. 450 watts 3.5 amps to a 100m wire at about 15 m height. Reception report from Ed R7NT and captured by F1AFJ, DF6NM, YV7MAE grabbers. Also seen were XEB XES XKO XNS MP FNY DF7KC DF6NM AGC.
Operation Schedule / Signal Reports 2012
December: 100 watts from new TX/driver. Strong sigs received by H. Wolf on the 9th. At 1944 the Decca was finally restored to operation with 2 PA's and 500 watts, 3 amps to the 100m wire. Nicolas F4DTL reported very strong signals while Marco, IK1HSS saw some sigs even with the Alps in the way. 12 Dec Report from Victor PA3FNY. Strong sigs. Possible trace from UW8SM. 13: G3XDV: 0230 to 0940UTC: more than 1.5 hours after UK sunrise. H. Wolff:2030-0930 peaking 0600-0630 13-16: receptions by H Wolff and after sunrise captures by Victor PA3FNY (0900 utc) 17th Tried with Stefan to get WSPR to start. 18. Start monitoring OP23 136.00 USB but nil. Hint from W1JT on starting WSPR. 20: Received WSPR sigs from DK7FC on 137.46 kHz -- the first WSPR reception here. 22-28 Dec. Reports from W1VD(22) Hartmut (25) nad Terry GW0EZY. An unusual daylight opening to Iceland took place on the 27th which was seen on the TF3HZ grabber. (1200-1500 UTC). 30th. Good reception at YV7MAE along with WD2XKO WD2XNS VE3OT (MP) DK7FC and DF6NM.
November: 10: 100 watts 137.777 kHz to 100m wire using new IRFP260 and 4427 driver. Heat sink was cool this morning. Checked the DF6NM DK7FC TF3HZ and G4WGT grabbers and found traces on WGT. 11 Nov: Opera32. Thanks to G0NBD and G4WGT: 11/11/2012 23:23 136 VO1NA de G4WGT Op32 2185 mi -40 dB in Chorley, IO83qo 12/11/2012 01:45 136 VO1NA de G4WGT Op32 3517 km -37 dB 03:19 136 VO1NA de G4WGT Op32 3517 km -35 dB 03:52 136 VO1NA de G4WGT Op32 3517 km -33 dB 06:04 136 VO1NA de G4WGT Op32 3517 km -39 dB 14th DFCW 100 watts 1.6 amps. Very strong on VE1VDM grabber, but very weak at G4WGT. 24 The beacon has been running for several days. IRFP260N & TC4427 driver are working well. Reports from DF6NM G4WGT and VA7JX.
30 October: OP32 receptions : 2113 PA0A -38 dB and 2202 DF6NM -36 dB.
September 01: OPERA32 starting 2200 UTC. 137.777 kHz 4.5 Amps Reports from GW0EZY(-28dB), F1DTL(-40), W1TAG(-40), G4WGT(-25) and DF6NM(grabber). 03-05 OP32. VE1VDM(-26) and DK7FC(-40) Reports received so far: GW0EZY F5WK DF2JP F4DTL G4WGT G8HUH VE1VDM and W1TAG. 6th: DFCW copied by GW0EZY. 11th: Reports of good reception fron DK7FC and W1VD(25 dB s/n in 28 mHz) and GW0EZY who noticed the post dawn enhancement. Alan, G3NYK offers a masterful explanation: " I think you will find that the shadow is around 1/4 of the way into the path. This suggests to me that the 2nd ionospheric hop point of the signal has been washed out by the solar radiation. The remaining signal maybe a weak one-hop (!) or possibly one night hop followed by two daytime D-layer hops. I think this is unlikely, but dont role it out, but D-layer daytime skywave is usually weak in the early morning. "
31 Aug-1 Sep: DFCW 4.5 amps. Reports from Terry GW0EZY and Martin YV7MAE.
29-30 Aug. Initial try with ARGO 8 and 32. Then DFCW.
26 August 1200 Watts input, 5 amps aerial current to the 100m wire. Another QSO with Stefan, DK7FC.
Stefan's signals were audible for the second exchange. The rectifier in the power supply for the Decca amp failed while the final K was being sent from VO1NA. Also heard were signals from WD2XGJ.
July and August. 10 watts on 184.5093 kHz comparing 100m wire and tower. Reception at Comfort Cove 1940 UTC 21 August: video.
5th: 1.2kW DC Input DFCW75 4.7 RF amps to a 100 metre wire. 8th: DK7FC reported seeing an NA on the grabber of VY7MAE. This is the first transmission from here received in South America. Congrats to Stefan and Martin for their work on this grabber. Good clear report from G4AYT. Thanks Chris. 11th 25 dB in 22 mHz reported by Stefan DK7FC. 17,18 May. An hour of carrier, 5 amps RF 1200W input followed by DFCW 75. Reports were received from W1TAG and KL7UK/5 (in OK)
22 QRSS75 Seen on G4WGT, D46NM grabbers. 4-5th: 1.2kW QRSS75.
7: VE3EAR Sigs blasting in (on QRSS3!) but not audible. DK7FC 20dB S/N at 22 mHz (2330 utc). 4X1RF 20 dB S/N before sunrise. G5WGT good overnight copy.
7th: Good copy at PA3FNY, Excellent at F5WK, along with WD2XES on 137.779 and WD2XKO on 137.7777. Bruce VE3EAR reported nice sigs. Big sigs reported again at G4WGT. See Michel's and Gary's copies below.
8th: Strong copy at G3XDV including initial 2 hours of key-down!
CMOS4017 Diode matrix keying a modified CMC XH-100 with OCXO at 13.77770 kHz (divide by 100 with TTL) Decca amp: 1.2kW DC input 4.5 RF Amps to a 100m wire at 15m. January: VE1VDM reported strong sigs along with MP. 12 RN3AGC OK7BVG RN3AUS 13 OK2BVG RN3AUS 14 VE1VDM (WD2XKO VE7SL also rec'd) 16 OK2BVG RN3AUS 17 4X1RF and RN3AUS 18, 19 RN3AUS 22 VE1VDM
February: 5 Amps RF 1.2 kW DC. 25: EC4AA. 29: CFH QRT on 137 kHz.
Operation Schedule / Signal Reports 2011
December: 1200 Watts 4.5 Amps RF to a 100m wire up 15 metres. 1st: M0BMU reported another daytime reception. Propagation expert G3NYK writes in response to Jim : "a low level geomagnetic event pushed the Dst index down a bit on the 30th and the 1st. At this time of year this could give a significant increase in the daytime ionisation in the D-region. I have seen very noticeable effects on shorter daytime paths immediately after a major geomagnetic event, and I have seen some variations that seemed in time with Dst values on the path to Lakihegy HGA22. My other thought is that the daytime D-layer could be weaker at this time of year and not absorbing so strongly so the signals could reach the E-region. However it seems unlikely that the returning signal would be strong enough to detect." Thank Alan. The TX was shut off at 1101 UTC which was the time of last reception at M0BMU. 4th: Reports from F1AFJ (a big pile up in the TA watering hole: WD2XES, WD2XNS, WD2XGJ, WD2XKO, VO1NA) and PA3CPM. 6th: a brief transmission between ~2100 and 2400 was copied by DK7KC, G3WCB and RW3AGC. Signals were then received from DK7FC and PA3CPM using the FT817, tower and National LF10 preselector.
8 December: 2320 UTC Aural reception of DK7FC at 4400 km.
Audio: clip 1 and
clip 2 at 2358 UTC.
This is the first TA aural reception of an
amateur LF signal at this station. Coincidence: first aural reception
of this station was in Germany (H. Wolff).
DFCW transmissions (4.5 amps 1200W) on 137.777 were received
by PA3CPM,PA3FNY and DL7ET. 10: RN3AGC and G3WCB reported.
11-14 Dec. Called CW DFCW10 and with considerable incompetence
ran DFCW60 before reducing the FSK. Ran CW for local reception
experiments. Reports gratefully acknowledged from RN3AGC G3WCB and VO1SQ.
14: Reports from RN3ACG PA3FN and VA7JX. The reception by VA7JX
is the first transcontinental LF transmission from this station.
Jacks reception on 137.777 kHz about 0400 utc on 13 December. WD2XKO is also visible at 137.7777 kHz. 27: Another TA QSO with DK7FC. Stefan was using QRSS3 to yield O copy and audible signals. Below is a partial transcript of Stefan's signals. Receiver: FT-817/LF-10 preselector and 100m wire resonated with 1.6 mH. 30: Stefan had some TX trouble but a tone was heard on 136.17 kHz: a glance of the ARGO screen showed it to be Jim M0MBU. This is the first audible 2200m reception from the UK.
Stefan copied this from across the pond:
Following the ensuing festivities, the VE3OT Beacon MP was seen on 137.78 kHz. . 30: Audible signals heard from M0BMU, the second station to be heard from across the pond. Also, 6 complete frames of OPERA(a digital mode) were received on 137.38 kHz from G4WGT with thanks also to G0NBD. 31: TA signals received from PA3CPM PA3FNY PA0A DK7FC DK6NM M0BMU and G3KEV: ARGO Screen around 136.17 kHz.
November 1 1kw 4.5 amps. Reports: PA3FNY PA3CPM F1AFJ. 2 Copied WE2XEB on 184.51 kHz. FT817/Burhans preamp(35dB) and tower. 20 Nov. TX on again. 4.5 Amps to 100m wire at 15m. Reports from PA3CPM, RN3AFC F1AFJ and DF6NM 21: PA3CPMi, F1AFJ, RN3AGC and F-60130 reported strong sigs. 22: Strong sigs received by M0BMU using a 30 cm ferrite rod antenna. 25: Copied by PA3CPM and an interesting reception by M0BMU at 1120 UTC over a full daylight path. The abrupt disappearance of the sigs corresponds to the TX being switched off at 1121 utc, a half hour after local sunrise. Local sunrise time 1051 UTC, at M0BMU 0740 UTC. 26: Reports from MOBMU PA3CPM PA3FNY and 4X1RF. 27: Reports from DF6NM 4X1RF PA3FNY F1AFJ and G3WCB. 28, 29 PA3FNY 30 PA3CPM. 30 Another daytime reception by M0BMU.
October: 1 Small trace of sigs reported by PA3CPM. 2-4: Call sign fragments received. 5: nil 6 and 7th: traces. Many thanks to PA3CPM for his valuable radio observations. 8 Oct: QSY to 137.777 kHz. 100 watts to 26.7m tower or 100m wire at 15m. Reports received from PA3CPM F1AFJ and DF6NM who reported the frequency as 137.777016 kHz. 12: 1 kw 4.5 amps to a 100m wire for brief operation. Signal reports from RN3AGC and RN3AUS (Moscow) 4X1RF (reporting on reception in Bucharest and 4X) F1AFJ and PA3CPM are gratefully acknowledged. Reception by 4X1RF at a distance of 7227 km. 20: 100 watts to 100m wire 15 m. Reports from PA3FNY PA3CPM F1AFJ W1VD. 21: reports from PA3CPM and PA3FNY. 22 1 kw to tower resulted in a fried relay
but once this was removed, reports were received from 4X1RF F1AFJ F4DTL and PA3CPM. The fried relay has become a celebrity: please see page 58 of the December 2011 RadCom. It is also a testament to the brute force of a Decca amp!
23 Oct. Interesting mid-afternoon reception by W1VD over a daylight path.
Thanks Jay. Overnight copies were seen on the F1AFJ grabber with evidence of much variability in the propagation and reports were gratefully received from PA3CPM and PA3FNY.
(Top to bottom WD2XGJ WD2XES and VO1NA transatlantic receptions from the F1AFJ Grabber) 24 Good copy at 4X1RF F4DTL and PA3CPM. 25 Now using 100m wire at 15m. F1AFJ (AUDIBLE) PA3CPM DK7FC 26 Reports from DD7PC(Marco's first), PA3CPM and DF7KC. 30-31 1 kw 4.5 amps to the 100m wire. F4DTL reported good conditions. PA3CPM had an 11 hour copy.
September 2011. 184.5093 kHz 5 watts toggled vertical or horizontal antennas. 22: Partial copy by PA3CPM:
but nil 23-25. Weak traces 26. Nil 27-29. (Except QRM from Megawatt broadcast) 30 nil;
August LF Experiments with FP/VO1RL FP5EJ FP5CJ FP/VO1NA in St. Pierre.
July: See page 49 of the July/August 2010 issue of The Canadian Amateur for an article outlining the first LF QSO in NL on the new amateur 136 kHz band.
April: 1,2,5. Reports from RN3ACG. CW transmissions were made during favourable conditions, but not quite favourable enough as M0BMU and F1AFJ were not quite able to copy the CW by ear, although Jean-Pierre did hear the carrier during DFCW transmissions. 9th, PA3CPM Henny copies the DFCW...
15,16. Copy by PA3CPM. 17 Copy by RN3AUS 19: Reports from PA3CPM RN3AUS and F4DTL. 20th: A transmission of a few hours was received clearly by PA3CPM and RN3AUS in Moscow. VE1ZZ reported audible reception of the CW transmissions on 1,7 and 20th at 459,469 and 439 respectively. 21-25 Captures from PA3CPM showing strong sigs. 25: G4WGT reports good sigs and YO/4X1RF reported good sigs being received in Romania.
March. 01 4.5 Amps 1 kW PA3CPM, VE3EAR G4AYT PA3FNY send reports. G3XDV remarks that this was the strongest signals he's seen from across the 'pond.' 02: PA3CPM DD7PC KU4XR DK7FC 03: PA3CPM F1AFJ DK7FC. 04 Copied WD2XNS CW ID 549 at 0304 UTC. That evening, TA QSO with Mike G3XDV. This was recorded by F1AFJ who along with W1VD, F1AFJ, DF6NM send their congratts. Well done, Mike! Then at 0255 W1VD heard 5 WPM CW from VO1NA. 05: TX 137.777 QSX 136.172 kHz until 0300 then TX 135.83 kHz CW at 5 WPM. 5th: Captures by M0BMU, PA3CPM. 6th-7th. Good sigs reported by PA3CPM, but no reports have been received for the 135.83 kHz CW. 8,9th 137.777 kHz followed by 135.83 kHz CW which was not heard by W1TAG, J. Davis and Ed Slidell south of the border. Thanks guys! 10th 0445 partial copy by RN3AGC at 5600km+. Sigs were audible at W1VD. 11th. Only traces seen at RN3AGC. 12: Dot 10. Copied by VE3OT DK7FC . 16-17: Copied by Gehard OE3GHB. Traces seen at 4X1RF: First Asian detection. 18: DFCW60 RF: 4.5 Amps 1000 watts. Clear copy by RN3AGC.
21 March. TA QSO with Markus DF6NM who was running 0.6 W ERP.
27: Reports from DK7FC RN3AGC and RN3AUS . 28: W1VD (audible) F5DTL. 29,30 and 31: Captures by RN3ACG with full callsign QRSS75 copy on 30 Mar.
February. 27th: 1.6 amps 100 watts to 100m wire up 15m. QRSS30. 137.777 kHz F1AFJ reports strong signals. 28th: 1 kW with Decca amp: Several reports received: VE3EAR Bruce: strong capture; F1AFJ Jean-Pierre Good copy; G4AYT Chris: excellent 'O' copy much of the time; PA3CPM Henny: strong signal; G4WGT Gary: visible on my grabber from 2145utc to 0630 then just a trace shortly after. G3XDV Mike: huge signal last night from around 2200 - the best I have ever seen from across the pond; PA3FNY Victor: Good Copy. Signals seen on grabbers including DF6NM, VE2IQ.
January: 184.5093 kHz 5 Watts 0.4 amps to 100m wire at average height of 15 metres. 2 Jan. Weak traces seen at PA3CPM. 3-5 Jan. Nil. 6th: PA3CPM copies parts of the V,1 and the letter O. strong traces by PA3FBY. 7th. Traces by PA3CPM. PA3FNY. 8: TX off until 1600 UTC. 9: weak traces PA3CPM. 10th bit stronger. 11th bit stronger again: Off air 13 Jan 2011.
Operation Schedule / Signal Reports 2010
Dec. TX 184.5093 kHz. 5 watts, 0.4 amps to a 100m wire at 15 metres average height. 1st: A weak trace received by PA3CPM but nil on 2nd. 3rd. traces of a few elements but weak. 5-6: weak traces. 7th. Clear O received by PA3CPM. Conditions are improving. 8,9: more elements received. 10th. Nil. 12th: Several letters copied by Victor and Henny. 13th. Very weak sigs at PA3CPM. 14: traces again... a bit stronger. 15 weak traces reported by Henny and Victor. 16 Nil. 20 clear trace at cpm. 21-23 traces reported by PA3CPM and PA3FNY. 24 Trace by PA4CPM. MX TO ALL
Oct/Nov. TX 184.5093 kHz. Henny PA4CPM monitoring around the clock. Weak traces reported on 15 and 20 November on 184.509 kHz. 22 Nov. PA3CPM Traces: The aerial is now about 15 metres average height (formerly 10 metres) and the temperature is -2 deg C which may be reducing dielectric losses. 24,25: More traces at CPM but nil on 26th.
April: 26th 2216 UTC:CW QSO VO1RL/VO1NA 137.777 and 136.380 kHz.
March 11th: RAC Bulletin on 2200m in Canada. Click here. At 2230 UTC VO1NA checked into the 75 metre net on 3740 kHz and made the announcement for NCS Chris VO1TX today for the amateurs of Newfoundland and Labrador. 14: Received sigs from Henny PA3CPM on 136.3174 kHz
February: 5th 2100 UTC initial tune up. QRSS75 on 137.777 kHz,70 watts, 1.4 amps to 100m wire at 10m. Reports from Markus DF6NM, Jean Pierre F1AFJ, Nicolas F4DTL and Ko NL9222.
Capture from F1AFJ (loop antenna and SDR)
The TX was switched on and operated during a major blizzard.
The band is now available to Canadian amateurs per the Canadian Table of Frequency allocations .
135.7 - 137.8
Stations in the amateur service using frequencies in the band 135.7-137.8 kHz shall not exceed a maximum radiated power of 1 W (e.i.r.p.) and shall not cause harmful interference to stations of the radionavigation service operating in countries listed in No. 5.67. (WRC-07) 7 Feb 2010. 70W 1.4 A. Traces at OK2BVG, RN3AGC and KL1X in Okie(PA0RDT probe and R75). Good at G3XDV, PA3FNY, PA3CPM. SWR is all over the place! Lots (~0.5m) of snow. 8 Feb. Reports from PA3CPM and F1AFJ. 9: PA3FNY
Operation Schedule / Signal Reports 2009
20 Sept: 5 WPM 184.5 kHz signals copied at Cabot Tower, Signal Hill by VE3EAR.
1 August. 10 watts 0.44 amps to 100m wire at 10m. QRSS75. 184.5093 kHz. 1-4 Nil at PA3CPM. 2: Good copy by W1TAG in Maine 1430 km with 50*50' loop feeding R75. Best at 0740 utc. 6-11: Weak traces copied by PA3CPM except nil on 10th. 11-17: Traces reported by PA3CPM, except on 12th. 17: 5 WPM. Aural receptions in Bonavista Bay.
July: Normal CW transmissions and local reception experiments: best range 427 km (all ocean path) 258 km (land and sea path). No copy in Labrador.
June 2009: Report of Canadian experimenters is now online. Please see this or if this format is unusable, please see the text version here . (This should soon be published on the Industry Canada web page at which time a link will appear here)
April and May: Local reception experiments. 5 WPM 10 watts 184.5093 kHz.
March: Nil at CPM 1st-10th. Antenna iced and down 2nd-4th. Good partial callsign at W1VD on 5th. Small traces at F1AFJ on 10th. 9th: Off for monitoring 500 kHz.
February: 1,2 Nil; 3 A clear VO at AFJ, partial at FNY; 5th Full callsign reported at AFJ, fragments at CPM; 6:traces at AFJ,CPM and FNY, full callsign at KG8CO. 7:traces at CPM,FNY. 9-11 TX off. 12: Near full callsign at F1AFJ, traces at PA3CPM and PA3FNY. 13,14 traces and nil at cpm, 15: Recognisable callsign at CPM. 19-21: Off air as result of wind damage to aerial. 23: Nil at afj, cpm. Weak at fny, ego. 24: nil at afj,cpm. Partial at fny. 26 Nil at afj, cpm. 28-1 mar. Nil at cpm. 26 Clear partial call sign at K3SIW. (EN52ta)
followed by little traces on the 16th, consistent with forecast of Alan G3NYK. Then on 17th, some impressive receptions:
January: Happy new year to all! Beacon 184.5093 kHz 10 watts 0.5 amps to 100m wire at 10 metres height. QRSS75. 1: possible reception by PA3FNY, but nil at CPM. 2: Nil at CPM and F1AFJ. 3-12 Dec. CPM reported traces on 5th and 7th and nil on remaining days. F1AFJ reported traces on 6\5th 11th. PA3FNY: good on 5th. 11th: Good copy by K3SIW. 14th Nice copies:
15 Jan 2009. Aerial down as result of broken halyard during severe wind storm. 25 Jan 2009. 1630 UTC. QRV again. 5 WPM 10 watts. 184.5093 kHz. 26 Jan. Resume QRSS75 at 2300 utc. 27: Very good copies by Victor and Jean Pierre and Henny:
28,29: traces ar AFJ,CPM,FNY. 30: Traces at AFJ, CPM, FNY and excellent copy at VE1VDM (850 km away). 31: Vy weak at CPM.
Operation Schedule / Signal Reports 2008 December: TX 184.5092 kHz QRSS75. 2 unid traces by pa3ego on 2nd,4th and by pa3cpm f1afj on the 7th and 9th. Henny and Jean-Pierre have been reporting daily with nil reports on the 10th. Our 2 observers having watched their screens with much devotion but little to report were finally rewarded on the 16th (Traces at F1AFJ) and the 17th when a spectacular copies were received. 18th: nil at AFJ and CPM. 19 traces at AFJ, CPM and PA3EGO. 20,21 JP and Henny had very good reception, but nil on following day with nil and slight traces being reported by PA3CPM, F1AFJ and PA3FNY until 31 Dec.
Image above thanks to Jean-Pierre F1AFJ (22 Dec 2008).
Image above thanks to Henny PA3CPM (18 Dec. 2008).
November: 1 CT1DRP reports fragments. Traces at PA3CPM 2: Brian receives almost a full call sign, but nil at Victor PA3FNY, Jean Pierre , and Henny who did report a strong but fragmented reception at PA3EGO. 4: Fragments received by Jean-Pierre, Brian and Henny. 5: Nil at cpm, afj, questionable traces seen by Willem. 6: Fragments at drp, afj 7: nil at cpm. 8,9. Nil at cpm, afj. 10 Off air. 11-19. Nil receptions for Henny, Jean Pierre and Victor. 20: Weak traces at PA3CPM.
March: 01. Transmissions resume on 187.37 kHz. The resolution of the F1AFJ synthesiser is such that the actual frequency is about 5 Hz high. QRSS 60, 0.4 amps 10 watts to 100m wire at 10m. 2-5: Nil at PA3CPM. G3NYK has predicted poor propagation. He appears to be accurate as usual. 12th. After changing to QRSS180, Henny PA3CPM copied the beacon again.
February: 17th. Hartmut Wolff receives the 1600m again and Henny PA3CPM copies them for the first time. Congrats to both. The aerial current was about 0.4 amps with 10 watts for the transmissions. Frequency control was with the F1AFJ frequency synthesiser set for 184.006 kHz. 20th. Another reception report from Henny PA3CPM. F1AFJ reported on 184 kHz: Traces of WD2XEB/2 , nil for VO1NA 23: traces at F1AFJ. 25: Henny PA3CPM captures a succession of 3 N's. 29: Trace at PA3CPM.
20th. Another reception report from Henny PA3CPM. F1AFJ reported on 184 kHz: Traces of WD2XEB/2 , nil for VO1NA 23: traces at F1AFJ. 25: Henny PA3CPM captures a succession of 3 N's. 29: Trace at PA3CPM.
January: Jean-Pierre, having monitored 189.9497 kHz for several months with only a possible trace of the signals seen on 15 December, suggests a new frequency. Transmissions resume on 184.006 kHz as reported by John W1TAG. on 15 January.
18-20 Nil at F1AFJ. Finally on 21 January, Jean Pierre F1AFJ reported seeing the signals.
This was consistent with what was actually transmitted at that time so FELICITATIONS F1AFJ on the first reception in France of amateur signals from North America on 1600 metres. 22,24 traces; 27,27 Nil at F1AFJ.
Operation Schedule / Signal Reports 2007
Operation Schedule / Signal Reports 2006
Operation Schedule / Signal Reports 2005
Timeline and signal reports:
Listening (watching) for Long Wave signals.
You will need a program called Argo by I2PHD and IK2CZL. Argo is an advanced FFT spectrum analysis package that will make it possible to detect and copy signals that may not be audible in the high noise.
There is a well written primer on how FFT works and bandwidth/information theory in very simple terms at this site.
Another excellent product is Spectrum Lab.
For receiving, a piece of wire is not especially useful for weak signals on LF unless it is carefully tuned. Without tuning, it has an enormous Xc and negligible R unless it's 100's of metres long. Tuned loops are the way to go. They are typically 5 feet square with 15 turns and resonated with a 1000pf trimmer cap. I use a coupling turn and connected it with coax to an FT-817 through a Burhans (30-35 dB) preamp. DCF-39 (50 kw FSK station in Germany) could be heard on 138.830 kHz without a preamp. The 817 and many other amateur transceivers are quite deaf below 500 kHz, but are stable enough in frequency. Several club members have heard DCF39 and some have received it using a wire (or shorting the near end of the feeder on an 80m or trap dipole and using it as an antenna) but the loop is usually better in terms of signal to noise. DCF39 can be recognised as a continuous carrier, interrupted at irregular ~10 second intervals by a 1 second FSK transmission. If you can hear DCF39, you have a good chance of seeing amateur signals on 2200m with ARGO.
Alan G3NYK has an excellent site, complete with propagation information and an easy-to-use spreadsheet implementation of Sokal's Class E Amplifier design equations. There are several other excellent sites on the internet, for instance ON7YD. More sites and a list of other Canadian LF experimenters are available at Steve's VE7SL site Steve's old site Propagation info and forecasts can be seen at Alan's G3NYK Propagation page.
To keep up-do-date on the latest in the world of Amateur LF, see the G3YXM LF News site. Or register for the RSGB LF reflector.
Ed RU6LA has been keeping track of 2200 m DX records .
Hartmut Wolff (Germany Locator: JO52ho) Maintains a web page with images of his latest captures including many transatlantic receptions.