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1. Re: LF: RTTY AT 135.8 kHz (score: 1)
Author: "Costas Krallis" <>
Date: Tue, 19 Oct 1999 22:36:05 +0300
yesterday I have seen (spectrogram) a RTTY signal at 135.8 kHz... Ham signal ??? No, it is the Greek Navy Fleet Broadcast station at Marathon. Costas +--+ +--+
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-10/msg00151.html (8,606 bytes)

2. LF: Re: 500khz (score: 1)
Author: "Costas Krallis" <>
Date: Sun, 31 Oct 1999 07:48:13 +0200
Hi everybody, as there is discussion in this list about CW ship comms on 500 kHz, you might be interested to see a photo of the 500 kHz antennas on the roof of the Hellenic Coast Guard HQ (callsign S
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-10/msg00217.html (9,242 bytes)

3. Re: LF: New Email & WWW address (score: 1)
Author: "Costas Krallis" <>
Date: Sun, 02 Jan 2000 11:02:43 +0200
I am currently changing my service provider.... ...I'd be grateful if you could update your bookmarks... ...accordingly. Hi Steve, I updated the master file with LF links and I shall upload it to my
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00004.html (8,777 bytes)

4. SXV 135 kHz (Was Re: LF: CFH (again!)) (score: 1)
Author: "Costas Krallis" <>
Date: Wed, 12 Jan 2000 20:42:22 +0200
The Greek RTTY follows a similar pattern, only because it is nearer the daytime signal is rather stronger. Note that this signal becomes strong before dusk, but goes down before our dawn, following
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00124.html (9,026 bytes)

5. Re: LF: 73kHz Today (score: 1)
Author: "Costas Krallis" <>
Date: Tue, 01 Feb 2000 19:49:25 +0200
I would guess that the sidebands are due to power supply ripple, and that when FSK modulation is on, all the sidebands get modulated too. Since the data is probably not syncronised with the mains, th
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-02/msg00013.html (8,991 bytes)

6. Re: LF: Filter capacitors (score: 1)
Author: "Costas Krallis" <>
Date: Fri, 04 Feb 2000 23:25:00 +0200
I note the comments on faulty filter capacitors with interest. Not certain of details of the transmitter responsible for the "Growler" on 73.3kHz but if it's a) High powered b) Valved c) Old then it
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-02/msg00052.html (9,461 bytes)

7. Re: LF: is/was DDH47 on 147.3 kHz at 2249 UTC (about)????? (score: 1)
Author: "Costas Krallis" <>
Date: Sat, 12 Feb 2000 08:13:36 +0200
Did you get a copy of this ? Yes, finally I managed to hear DDH47 in Athens, Greece. Their signal was very weak. Costas SV1XV (ex G7AHN) +--+ +--+
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-02/msg00130.html (9,202 bytes)

8. Re: LF: 500KHz and around (score: 1)
Author: "Costas Krallis" <>
Date: Tue, 05 Dec 2000 18:27:30 +0200
73 Costas +--+ +--+
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-12/msg00472.html (8,726 bytes)

9. Re: LF: Mains Borne Noise (score: 1)
Author: "Costas Krallis" <>
Date: Tue, 23 Jan 2001 15:43:38 +0200
Not a "whole house" mains filter, but a radio room mains "filter". All main supply to my radio equipment is run via a single phase isolation transformer,... The only problem with this approach is tha
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00309.html (10,084 bytes)

10. Re: LF: Re: BEACONS: Greek navy on 135.8 QRT ? (score: 1)
Author: "Costas Krallis" <>
Date: Thu, 22 Feb 2001 08:52:09 +0200
Hi Wolf SXV is on and off at present but it was visible yesterday I believe. I have been told that the mast occupies a site that is going to be developed as an Olympic stadium, so a move could be in
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00102.html (9,118 bytes)

11. LF: Re: EF50 (score: 1)
Author: "Costas Krallis" <>
Date: Fri, 16 Mar 2001 16:01:58 +0200
Amongst the mine of nostalgia out there, I there anyone who understands valve circuit topology and can tell us if the circuit I described really can be considered as a cascode but using just a singl
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-03/msg00231.html (9,036 bytes)

12. Re: LF: E88cc in parallel (score: 1)
Author: "Costas Krallis" <>
Date: Wed, 14 Mar 2001 06:42:35 +0200
Could someone please post a schematic or two of these valve/tube antenna amplifiers? Regards, Costas SV1XV +--+ +--+
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-03/msg00279.html (9,838 bytes)

13. LF: [WUN] GBR 16 kHz (score: 1)
Author: "Costas Krallis" <>
Date: Tue, 29 May 2001 13:13:37 +0300
At 29 1004Z May 2001, GBR stopped its MSK transmission and switched to CW mode. It sent briefly a few 1 s dots, its callsign twice "GBR GBR" followed by a few more dots. Then it went off. Nice signal
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00018.html (8,759 bytes)

14. Re: VLF: GBR 16 kHz (score: 1)
Author: "Costas Krallis" <>
Date: Tue, 29 May 2001 16:23:30 +0300
Fine! GBR transmission received well in Athens, Greece with an S9 signal (and S7-8 ambient noise...). RX: Icom IC-706 + home made converter, ANT: Vertical, 7 meters + 25 meters RG-58/U cable. ATTENTI
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00035.html (9,032 bytes)

15. VLF: GBR 16 kHz (score: 1)
Author: "Costas Krallis" <>
Date: Tue, 29 May 2001 15:25:13 +0300
Fine! GBR transmission received well in Athens, Greece with an S9 signal (and S7-8 ambient noise...). RX: Icom IC-706 + home made converter, ANT: Vertical, 7 meters + 25 meters RG-58/U cable. Here is
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00039.html (8,628 bytes)

16. LF: Re: 3 phase ripple (score: 1)
Author: "Costas Krallis" <>
Date: Tue, 26 Jun 2001 18:49:53 +0300
The RMS value is not really appropriate for this purpose Point taken. Whatever you do, be verrry careful about insulating things. Taking into account that both DC terminals fo these power supplies a
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00044.html (9,726 bytes)

17. LF: QSL for GBR CW tranmission (score: 1)
Author: "Costas Krallis" <>
Date: Mon, 18 Jun 2001 15:47:45 +0300
Today I received my QSL card from BT Rugby Radio Station for my reception report for the Special Transmission of 29 May on 16 kHz. It is signed by M J Hancock and the address on the card is: BT Rugby
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00144.html (8,722 bytes)

18. LF: Re: Electro-mechanical receiver for SAQ (score: 1)
Author: "Costas Krallis" <>
Date: Mon, 02 Jul 2001 16:11:32 +0300
I was also able to successfully receive SAQ with a homebrew electro-mechanical receiver. Nice setup Jim. I am sure you had lots of fun with it! I wish there were a few more regular CW signals at VLF
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-07/msg00218.html (9,326 bytes)

19. LF: SAQ, VTX3, 1 July 2001 (score: 1)
Author: "Costas Krallis" <>
Date: Sun, 01 Jul 2001 13:04:20 +0300
The morning hours of 1 July there was good propagation on LF and on 18.3 kHz VTX3 (Indian Navy) was very strong at 599 at my location. The SAQ transmissions at 0830 and 0845 were also very well recei
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-07/msg00240.html (9,103 bytes)

20. LF: News from Greece (score: 1)
Author: "Costas Krallis SV1XV" <>
Date: Sun, 26 Aug 2001 16:02:37 +0300
There are news from Greece regarding the 136 kHz band. About a week ago the Helelnic Navy signal on 135.8 kHz disappeared and a new FSK signal (possibly from the same source) appeared on 124.6 kHz. C
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-08/msg00048.html (8,800 bytes)


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