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Total 187 documents matching your query.

121. Re: LF: Loran Line or U.S. MedFER? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Fri, 06 Jan 2006 14:35:12 +0100
I doubt that it could be a Loran line. The nearest Loran system in frequency used to be Loran A with a centre frequency just above 1900kHz. It was the bane of Topband DXers but was shut down years ag
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-01/msg00080.html (10,580 bytes)

122. Re[2]: LF: Loran Line or U.S. MedFER? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Fri, 06 Jan 2006 18:46:39 +0100
On reflection I think Loran A was on about 1930. From what I recall it sounded a bit like multiple bandsaws fading in and out with their relative phases wobbling around like the efforts of a not very
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-01/msg00083.html (11,200 bytes)

123. Re[4]: LF: Loran Line or U.S. MedFER? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Mon, 09 Jan 2006 16:07:08 +0100
The other reason for a dearth of international activity on top band 40 years ago was that much of the USA did not have a top band allocation. I can't be specific as my copy of the ARRL handbook for t
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-01/msg00150.html (11,997 bytes)

124. Re[2]: LF: ferrite rods (score: 1)
Author: "John RABSON" <[email protected]>
Date: Tue, 10 Jan 2006 14:07:00 +0100
Peter, If you can get hold of it (I'm not sure how you do this) you will find some material on this topic in the doctoral thesis of David Gibson of Leeds University. Chapter 4 deals with antenna desi
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-01/msg00173.html (11,078 bytes)

125. LF: SAQ in France (score: 1)
Author: "John RABSON" <[email protected]>
Date: Mon, 20 Feb 2006 19:42:57 +0100
Confirming reception of SAQ on 17.2kHz, 19 February 2006 at approximately 1330 UTC. Location: 47° N 4° E in the department of the Nievre. Signal was RST 559. Antenna: 12 turn loop 80 centimetres on e
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00130.html (8,138 bytes)

126. Re: LF: {Spam?} Active_antennas (score: 1)
Author: "John RABSON" <[email protected]>
Date: Sun, 05 Feb 2006 11:31:57 +0100
G8DSU has been doing some measurements on height gain at UHF and is also interested in active antennas at LF for cave radio purposes. I will copy this to him because I'm not sure whether he is curren
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00389.html (11,036 bytes)

127. Re: LF: Decca SG (score: 1)
Author: "John RABSON" <[email protected]>
Date: Mon, 20 Mar 2006 21:32:52 +0100
I'm not sure I agree with this. My Wireless World valve data book from the late 1950s describes the 6L6 as an (audio) output beam tetrode rated for 300V on the anode, 200V on the screen, and deliver
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00150.html (9,481 bytes)

128. Re: LF: Rugby LORAN measurement? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Fri, 31 Mar 2006 18:39:55 +0200
Do you know the time of day when there will be a break, please? I do not expect to notice it in Burgundy but would like to see if I'm wrong. 73 John F/G3PAI ** REPLY SEPARATOR **
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00369.html (10,366 bytes)

129. Re: LF: Rugby test? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Thu, 09 Mar 2006 11:49:09 +0100
Sorry, I typed the wrong address. This was meant to go direct to Peter. John F/G3PAI ** REPLY SEPARATOR **
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00390.html (12,894 bytes)

130. Re: LF: Rugby test? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Thu, 09 Mar 2006 11:40:55 +0100
Peter, Cave radio people have for some time been wondering about the origin of the Galloping Horses effect. I believe the term was coined by Jean-Jacques Fauchez, F6IDE, but he is now a Silent Key we
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00391.html (12,386 bytes)

131. Re: LF: Rugby test? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Wed, 08 Mar 2006 09:45:00 +0100
I forgot to add that, when the signal was at low level, the Galloping Horses effect was absent. There was just a steady noise somewhat like an unsuppressed fluorescent light. 73 John ** REPLY SEPARAT
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00395.html (12,573 bytes)

132. Re: LF: Rugby test? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Wed, 08 Mar 2006 09:41:29 +0100
But if the lights go out the results will be All Black. 73 John G3PAI ** REPLY SEPARATOR **
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00396.html (10,170 bytes)

133. Re: LF: Rugby test? (score: 1)
Author: "John RABSON" <[email protected]>
Date: Tue, 07 Mar 2006 21:24:50 +0100
Loran was about 12dB down on its normal level here using a 12 turn loop 80 centimetres on a side. 73 John F/G3PAI (in Burgundy) ** REPLY SEPARATOR **
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00399.html (11,744 bytes)

134. Re: LF: Re: Re: LORAN levels (score: 1)
Author: "John RABSON" <[email protected]>
Date: Wed, 12 Apr 2006 09:34:30 +0200
I have just checked again and, and loran is down another 10 dB (very roughly). Still no galloping. 73 John ** REPLY SEPARATOR **
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-04/msg00151.html (9,403 bytes)

135. Re: LF: Re: Noblesse oblige (score: 1)
Author: "John RABSON" <[email protected]>
Date: Mon, 10 Apr 2006 10:35:47 +0200
Alan, F5 plus twos are very old, like G? plus twos. G4OKW and G8DQX will be here from Thursday for about a week and we hope to rig some wire. 73, John ** REPLY SEPARATOR ** On 09/04/2006 at 21:02 Ala
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-04/msg00158.html (10,278 bytes)

136. Re: LF: Re: Noblesse oblige (score: 1)
Author: "John RABSON" <[email protected]>
Date: Sun, 09 Apr 2006 22:15:06 +0200
When I asked about choice of call sign I was told it was not possible to reserve anything and the F5V series was used for people with a CEPT class one licence who were not French nationals. I don't t
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-04/msg00160.html (9,823 bytes)

137. LF: LORAN levels (score: 1)
Author: "John RABSON" <[email protected]>
Date: Wed, 12 Apr 2006 08:41:27 +0200
Is Lessay off air? Loran level is between 12 and 15 dB down on normal here and is about the same level as when Lessay was last off. Also, the horses are not galloping. This suggests to me a single-ra
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-04/msg00185.html (8,354 bytes)

138. LF: Noblesse oblige (score: 1)
Author: "John RABSON" <[email protected]>
Date: Sun, 09 Apr 2006 19:53:23 +0200
This is a French expression which seems to mean (approximately) "something you have a moral obligation to do because of your position". Having just received my French call sign, it therefore seems I
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-04/msg00373.html (9,034 bytes)

139. Re: LF: DI2BO on the air (440 kHz) (score: 1)
Author: "John RABSON" <[email protected]>
Date: Sat, 06 May 2006 19:20:42 +0200
Nothing heard here (47degN 4degE). There is an S5 noise level. When I have found which domestic appliance is causing the problem I will try again. 73 John F5VLF ** REPLY SEPARATOR **
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-05/msg00073.html (10,050 bytes)

140. Re: LF: Off topic Marconi (score: 1)
Author: "John RABSON" <[email protected]>
Date: Thu, 04 May 2006 12:17:12 +0200
You also try the G-QRP Club. They do 1.4MHz filters. 73 John F5VLF/G3PAI ** REPLY SEPARATOR **
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-05/msg00084.html (9,478 bytes)


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