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1. LF: G3XDV RN3AGC 2200m OPERA 2484 km 23:30:17 (score: 1)
Author: "Graham" <>
Date: Fri, 4 Jul 2014 01:01:21 +0100
No path over land ? G, G3XDV RN3AGC 2200m OPERA 2484 km 23:30:17 Greece SV8CS G3XDV 2200m OPERA 2261 km 21:40:26 Greece SV8CS SV8RV-3 2200m OPERA 7 km 23:20:14 Greece SV8CS SV8RV-1 2200m OPERA 7 km 2
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00004.html (17,980 bytes)

2. LF: psk Map out for a few days (score: 1)
Author: "Graham" <>
Date: Wed, 9 Jul 2014 22:35:37 +0100
psk Map out for a few days Posted in the map group I suspect that the server is down. We had a big storm come through last night and we lost power. It seems that it hasn't come back to life. I'm away
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00037.html (13,592 bytes)

3. Re: LF: test 2 (score: 1)
Author: "Graham" <>
Date: Thu, 24 Jul 2014 01:19:46 +0100
There's a activity report Pete , seems no very much is going on either OP32 decodes in the last 24 hours European Russia RN3AGC RW3ADB 2200m OPERA 32 km 21:44:23 73-G, From: M0FMT Sent: Thursday, Jul
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00073.html (15,676 bytes)

4. LF: 136k ALL de ZL2AKI (New Zealand): Beacon Op8 in Wanganui, New Zealand (score: 1)
Author: "Graham" <>
Date: Sun, 3 Aug 2014 00:13:03 +0100
Mid day at the moment ? G, 136k........ALL de ZL2AKI (New Zealand): Beacon Op8 in Wanganui, New Zealand
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00017.html (8,654 bytes)

5. Re: LF: 136k ALL de ZL2AKI (New Zealand): Beacon Op8 in Wanganui, New Zealand (score: 1)
Author: "Graham" <>
Date: Sun, 3 Aug 2014 00:19:05 +0100
Is anyone actually sending ? G, 7L1RLL 7L1RLL 2200m OPERA 0 km 23:00:18 Japan JP1ODJ JP1ODJ 2200m OPERA 0 km 22:54:33 Brazil PY3SS PY3SS 2200m OPERA 0 km 21:04:30 England G4WGT G4WGT 2200m OPERA 0 km
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00018.html (42,867 bytes)

6. LF: Receivers for LF and MF 136 KHz @ 477KHz ??? (score: 1)
Author: "Graham" <>
Date: Thu, 7 Aug 2014 13:13:09 +0100
Receivers for LF and MF 136 KHz @ 477 KHz A question, Starting at the 5 dongle rigged for direct sample , as a cheap effective starting point A pre amp and pre - selector [ band pass filter ] would
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00034.html (12,712 bytes)

7. Re: LF: Receivers for LF and MF 136 KHz @ 477KHz ??? (score: 1)
Author: "Graham" <>
Date: Thu, 7 Aug 2014 14:34:41 +0100
web sdr using , low ish price, , compact sdr and mini whip .. any one used this 100K > 30 MHz [ vhf possible ] sdr ? http://g7jjp-websdr.no-ip.org:8901/ http://www.afedri-sdr.com G, From:
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00035.html (14,451 bytes)

8. Re: LF: Receivers for LF and MF 136 KHz @ 477KHz ??? (score: 1)
Author: "Graham" <>
Date: Thu, 7 Aug 2014 21:35:44 +0100
Yes Tobias, All is not as it seems , but as you say , adding filtering , reduces the problems , and with direct conversion , the noise floor is the lowest possible , stability is at maximum , having
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00037.html (14,515 bytes)

9. Re: LF: Receivers for LF and MF 136 KHz @ 477KHz ??? (score: 1)
Author: "Graham" <>
Date: Fri, 8 Aug 2014 12:13:04 +0100
Hi Paul, Yes , the later version , may be the 117 or the fine tune version for the Navy used the 7360 , probably about as good as it gets , I spent some time on production test when the ra1771/2 was
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00040.html (17,485 bytes)

10. Re: LF: Receivers for LF and MF 136 KHz @ 477KHz ??? (score: 1)
Author: "Graham" <>
Date: Fri, 8 Aug 2014 14:42:11 +0100
Thanks Roelof Thats a good recommendation ! 73-G, Hello Graham, An other good receiver is the ELAD FDM-S2 SDR, albeit a bit more costly than the Afedri. I believe you can set up four receivers with t
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00044.html (11,101 bytes)

11. Re: LF: Receivers for LF and MF 136 KHz @ 477KHz ??? (score: 1)
Author: "Graham" <>
Date: Fri, 8 Aug 2014 14:41:11 +0100
Ok Paul The Navy has extra IF , the slow motion tune is another down conversion to , I think 50KHz IF ? I was not involved with the remote versions , but , yes the boards are similar , the ra1778 has
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00045.html (20,096 bytes)

12. LF: ALL de IZ7SLZ (Italy): Beacon Op32 every 00:00 in JN80NU 50w + Inverted-L (score: 1)
Author: "Graham" <>
Date: Mon, 11 Aug 2014 22:11:33 +0100
ALL de IZ7SLZ (Italy): Beacon Op32 every 00:00 in JN80NU 50w + Inverted-L New TX station ? G, Greece SV8RV-1 SV8RV-1 2200m OPERA 0 km 20:38:52 Poland SP5XSB SP5XSB 2200m OPERA 0 km 20:41:53 European
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00051.html (26,413 bytes)

13. Re: LF: ALL de IZ7SLZ (Italy): Beacon Op32 every 00:00 in JN80NU 50w + Inverted-L (score: 1)
Author: "Graham" <>
Date: Tue, 12 Aug 2014 00:45:20 +0100
Ok Domenico I don't see any decodes from sv8rv-1 , with coverage to LA , would of expected sv8 no problem ? assume qrg is ok ? latest Opera uses 1500 Hz audio for all bands , that makes 137.500 +/- c
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00053.html (28,404 bytes)

14. Re: LF: ALL de IZ7SLZ (Italy): Beacon Op32 every 00:00 in JN80NU 50w + Inverted-L (score: 1)
Author: "Graham" <>
Date: Tue, 12 Aug 2014 12:00:52 +0100
Ok Domenico Thats ok , decodes showed up after I closed for the night , 3 may be 6 dB inside limit you Ae system is working nicely ! 73-G, ps-latest V is 1-5-4 , typo ? From:
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00057.html (32,454 bytes)

15. Re: LF: ALL de IZ7SLZ (Italy): Beacon Op32 every 00:00 in JN80NU 50w + Inverted-L (score: 1)
Author: "Graham" <>
Date: Tue, 12 Aug 2014 12:14:24 +0100
"cage" of 6 wires all connected in parallel. Q what are the cage dimensions Domenico ?? Tnx-G, From: Domenico IZ7SLZ Sent: Monday, August 11, 2014 11:39 PM To: Subject: R
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00060.html (28,618 bytes)

16. LF: OP32 (score: 1)
Author: "Graham" <>
Date: Thu, 14 Aug 2014 00:54:40 +0100
Things are hotting up ! Note ,fixed qrg stations , make sure you have a few cycles difference in the carrier frequency , as a gaud band ..the all on one qrg only works on HF where rx/tx are not 100%
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00069.html (25,997 bytes)

17. LF: SV3DVO Loc FN30CT ??? (score: 1)
Author: "Graham" <>
Date: Fri, 15 Aug 2014 17:31:23 +0100
SV3DVO Loc FN30CT Showing on psk-map as USA Locator is New York USA Rx at Fri, 15 Aug 2014 16:10:06 GMT From SV3DVO by SV3DVO Loc FN30CT Frequency: 0.136 MHz (2200m), OPERA Distance: 0 km bearing 0
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00074.html (15,503 bytes)

18. Re: LF: SV3DVO Loc FN30CT ??? (score: 1)
Author: "Graham" <>
Date: Sat, 16 Aug 2014 00:31:32 +0100
Thanks for info Spiros That one to shoot at over the winter then ! 73-G, From: SV8CS- Spiros Chimarios Sent: Saturday, August 16, 2014 12:13 AM To: Subject: Re: LF: SV3DV
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00087.html (17,722 bytes)

19. Re: LF: USB Sound Card? (score: 1)
Author: "Graham" <>
Date: Sat, 16 Aug 2014 00:48:35 +0100
Thanks for the run down Tobias The windows re-sampling caused problems with wspr in the early days on MF , as its possible that wspr had never been used in a situation where 100% of the signal arrive
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00088.html (18,172 bytes)

20. LF: Daytime 477 OP8 test (score: 1)
Author: "Graham" <>
Date: Sat, 23 Aug 2014 16:04:29 +0100
Daytime 477 OP8 test Just re-assembled the MF tuner , etc , modified the invL , wound the 30 ft dog leg onto cok-bottle and now have 2 loading coils , one at the top of the vertical section and one a
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00140.html (9,518 bytes)


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