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1. Re: Fw: LF: Pure off-topic: old tubes (score: 1)
Author: Marco IK1ODO -2 <>
Date: Tue, 08 Jul 2014 14:50:09 +0200
15 years ago I was used to buy truckloads of test and communication equipment from Johns Radio in Bradford (now he is in Batley). He had a lot of equipment from the closure of STC R&D labs. I acquire
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00029.html (10,504 bytes)

2. Re: LF: Re: Pure off-topic: old tubes (score: 1)
Author: Marco IK1ODO -2 <>
Date: Tue, 08 Jul 2014 15:50:37 +0200
You are so kind. Thank you very much. My tubes look exactly like 4B/551B(D). I will measure the dimensions to be sure as soon as I can. It looks convenient that the filament voltage is the usual 6.3
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00031.html (10,830 bytes)

3. Re: VLF: Some natural signals (score: 1)
Author: Marco IK1ODO -2 <>
Date: Sun, 23 Apr 2017 10:27:34 +0200
The 'dawn chorus' recorded this morning at Todmorden, 05:39 to 05:53. http://78.46.38.217/au170423a.mp3 15 minutes, mono 64 kbps, 6.4 Mbytes. https://en.wikipedia.org/wiki/Dawn_chorus_(electromagnet
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-04/msg00317.html (9,612 bytes)

4. RE: 500 LF: RADCOM (score: 1)
Author: Marco IK1ODO -2 <>
Date: Thu, 25 Oct 2007 17:20:25 +0200
many thanks vy73 Marco DD7PC Easy, it is the organ of the RSGB. You get it by subscribing to RSGB, like you get QST by subscribing to ARRL. Marco IK1ODO
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-10/msg00002.html (9,316 bytes)

5. Re: LF: Re: RADCOM (score: 1)
Author: Marco IK1ODO -2 <>
Date: Thu, 25 Oct 2007 15:04:44 +0200
... - Writing a good article makes A LOT of work - you could easily do another project rather than write an article. (and your fellow hams might call you at 10 p.m. or 6 a.m. if their kit is not wor
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-10/msg00061.html (11,344 bytes)

6. Re: LF: Fabrication d'une lampe triode (score: 1)
Author: Marco IK1ODO -2 <>
Date: Tue, 08 Jan 2008 09:56:03 +0100
73 Warren K2ORS Having been in the tube/valve/lampe/valvola business, really interesting. Thanks for the link! 73 de Marco IK1ODO / AI4YF
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00182.html (11,404 bytes)

7. Re: LF: DI2AT 505.145KHz transmiiting PSK31/PSK08 (score: 1)
Author: Marco IK1ODO <>
Date: Sun, 09 Mar 2008 22:41:22 +0100
At 22.00 09/03/2008, Wolf wrote: Hello Roland, Copied your PSK08 transmission in JO42FD, using an SDR-IQ on an untuned HF dipole. ... In PSK31, no decode, the signal barely visible on the spectrogram
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-03/msg00106.html (12,395 bytes)

8. Re: LF: DI2AT 505.145KHz transmiiting PSK31/PSK08 (score: 1)
Author: Marco IK1ODO -2 <>
Date: Mon, 10 Mar 2008 19:08:29 +0100
Hi Wolf, I just set up a signal generator (HP 8643A) at QRL (100m from QTH) radiating an AM-modulated 10148 kHz PSK08 signal, modulated at 80% by a 1kHz tone, so that I have two good sidebands at 101
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-03/msg00135.html (12,328 bytes)

9. Re: LF: DI2AT 505.145KHz transmiiting PSK31/PSK08 (score: 1)
Author: Marco IK1ODO <>
Date: Mon, 10 Mar 2008 13:52:45 +0100
At 13.17 10/03/2008, you wrote: Hello Marco Thank you for the interesting report. Generally I got much better reports with PSK08. PSK08 had been received almost error free. To my Station: PC, Softwar
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-03/msg00458.html (12,961 bytes)

10. Re: LF: Loop Conundrum (score: 1)
Author: Marco IK1ODO -2 <>
Date: Mon, 21 Jul 2008 14:07:53 +0200
A small magnetic loop mounted vertically has a defined radiation resistance that is a function of its diameter, a loss that is function of its conductor and hence a loss or efficiency that is the rat
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-07/msg00106.html (11,278 bytes)

11. Re: LF: CT1DRP 136321Hz (score: 1)
Author: Marco IK1ODO <>
Date: Sun, 09 Nov 2008 11:01:55 +0100
Brian, have you been able to determine your ERP? Just curious ... :-) 73 - Marco IK1ODO
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-11/msg00184.html (8,952 bytes)

12. Re: LF: Beacon 136320.5 (score: 1)
Author: Marco IK1ODO <>
Date: Fri, 07 Nov 2008 21:38:37 +0100
CT1DRP will be transmitting on 136320.5Hz using DFCW10 with 0.2 shift. I am hoping to survey the field strength to confirm the ERP. If the frequency is interfering with anything ongoing please let me
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-11/msg00228.html (10,321 bytes)

13. Re: LF: Beacon 136320.5 (score: 1)
Author: Marco IK1ODO -2 <>
Date: Sat, 08 Nov 2008 08:32:23 +0100
At 08.11 08/11/2008, you wrote: Thank you Marco. I hope to be driving around the countryside today and tomorrow provided the weather obliges. I will publish the value as soon as I have something conc
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-11/msg00358.html (10,165 bytes)

14. Re: LF: RE: WSPR beacon on 136kHz (score: 1)
Author: Marco IK1ODO <>
Date: Sun, 11 Jan 2009 23:25:59 +0100
Still copying DF6NM, but only a faint trace of M0BMU. 204200 2 -28 1.1 13 0 204400 7 -19 1.3 84 0 DF6NM JN59 23 204800 2 -28 1.0 13 0 205200 3 -25 1.5 84 0 210000 1 -26 1.7 78 0 210800 4 -20 1.6 78 0
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00060.html (11,124 bytes)

15. Re: LF: WSPR Beacon 503.5 tonight (score: 1)
Author: Marco IK1ODO <>
Date: Fri, 09 Jan 2009 13:58:52 +0100
Jim, here is my night-long decode of the 503.5 kHz beacon: 215400 5 -16 1.0 23 0 220200 4 -12 1.5 23 0 M0BMU IO91 30 220600 3 -18 1.2 23 0 221000 5 -13 1.2 23 0 M0BMU IO91 30 221400 4 -13 1.0 23 0 22
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00142.html (14,504 bytes)

16. Re: LF: Luxemburg effect? (score: 1)
Author: Marco IK1ODO <>
Date: Tue, 06 Jan 2009 21:16:24 +0100
Hi Markus, hi group! Thank you Marcus for mentioning the "Luxemburg effect". Yes I had a rough idea that its somekind of cross modulation in the ionosphere, when a strong signal is present. Now I wa
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00224.html (11,472 bytes)

17. Re: LF: Re: WSPR beacon on 136kHz (score: 1)
Author: Marco IK1ODO <>
Date: Sun, 11 Jan 2009 21:52:32 +0100
Markus, finally decoded: 204200 2 -28 1.1 13 0 <-- possibly a trace of M0BMU 204400 7 -19 1.3 84 0 DF6NM JN59 23 204800 2 -28 1.0 13 0 <-- possibly a trace of M0BMU 73 - Marco IK1ODO JN35sa - Perseus
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00489.html (8,058 bytes)

18. LF: M0BMU copied (score: 1)
Author: Marco IK1ODO <>
Date: Tue, 13 Jan 2009 22:36:23 +0100
Finally copied Jim in WSPR: 213200 4 -20 1.2 -28 0 M0BMU IO91 23 I will leave the RX on. JN35sa, Perseus + 7m vertical (untuned) 73 - Marco IK1ODO
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00638.html (10,475 bytes)

19. Re: LF: Luxemburg effect? (score: 1)
Author: Marco IK1ODO <>
Date: Tue, 06 Jan 2009 21:40:31 +0100
Hi Marco! Thank you very much for providing my bedtime sweets tonight :) Dennis dl6nvc ;-) 73 - Marco IK1ODO / AI4YF (on RSGB_LF_GROUP since 1998 - is there a diplom for 10 years of list subscriptio
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00739.html (10,670 bytes)

20. LF: QRSS around 136.310? (score: 1)
Author: Marco IK1ODO <>
Date: Sat, 17 Jan 2009 22:15:12 +0100
Hello, who is in DFCW around 136.307 - 136.308? I see DF6NM vy strong at .309, and RA3YO with a weak signal and QSB at 136311.2 - 136311.3 Hz. RA3YO uses long intervals between dots... a very long me
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00992.html (12,306 bytes)


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