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Total 686 documents matching your query.

261. LF: Re. Noisy antennas-K9AY Loop (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Thu, 10 May 2001 21:51:37 +0100
I have been using a large EWE Loop (K9AY is a derivative of EWE) for 18 months and can confirm Cardioid directional pattern and low noise performance. 73s Laurie.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00221.html (7,746 bytes)

262. LF: Re. lf tests (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Thu, 10 May 2001 19:00:32 +0100
Hi, John, I didnt manage to fix the fault last night so no beacon. All OK now though, so will run it tonight 73s Laurie..
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00226.html (8,551 bytes)

263. LF: Re. Beacon (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Tue, 8 May 2001 22:46:17 +0100
Sorry I have a TX fault that I cant fix tonite.So no beacon ! Will try to fix it tomorrow. 73s Laurie.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00243.html (8,102 bytes)

264. LF: Re. Beacon (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Tue, 8 May 2001 15:27:38 +0100
Hi John and all, Alans report on CFH last night indicates that there was a period between 0200 and 0400 when T/A signals should get through. So I will run the beacon tonight from 2300 utc on 135.922.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00247.html (8,349 bytes)

265. LF: Re. Measurment of antenna current (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Mon, 7 May 2001 07:48:42 +0100
Steve, It seems to me that the current difference can only be due to 1) Radiation from the coil (unlikely) 2)LOSSY capacitance from the coil/feeder to surroundings. I found that my Ant. current varie
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00255.html (8,658 bytes)

266. LF: Re. LF Tests (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Sun, 6 May 2001 18:58:32 +0100
Thanks John for the report. Looks like we can make it across in less than ideal conditions. I will give it a rest for a few days and then try again. 73s Laurie.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00261.html (8,567 bytes)

267. LF: Re. LF tests (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Sat, 5 May 2001 07:43:22 +0100
Whoops !! I cant count now, for 3 read 2. Put it down to anno- domini. No change in freq, still 135.922 will try again tonight. 73s Laurie.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00280.html (8,530 bytes)

268. LF: LF Re. G3AQC beacon (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Sat, 5 May 2001 07:55:45 +0100
Many thanks Uwe for the nice pic. I was running with very long gaps 25secs, total element length 60 secs. Looks like SpecLab does a better job separating the elements than ARGO or mebbe I hav'nt got
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00281.html (8,143 bytes)

269. LF: lf Tests (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Fri, 4 May 2001 21:32:34 +0100
Hi John, Beacon running now, 135.933, 30sec dots. Sun fairly quiet but lots of QRN over here ! 73s Laurie.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00284.html (8,721 bytes)

270. LF: Re. Ground systems (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Tue, 1 May 2001 12:40:37 +0100
Hi Tom, Grounding is the big problem at LF as I am sure you know.Radial systems that would be effective on 40, 80,or even 160 are impossible (100 X quarter wavelength makes the mind boggle)Ground pen
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00324.html (9,293 bytes)

271. LF: 73 KHz Beacon (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Sat, 30 Jun 2001 21:40:49 +0100
Hi All, Thanks Ko for the report and pic. Will run again tonight,for a little longer.Start 2330UTC until 0430 think the TX will cope! 73s Laurie.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00002.html (7,787 bytes)

272. LF: Re. 73KHz Beacon (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Sat, 30 Jun 2001 09:23:34 +0100
Hi John,Jim, Alan,and all, Beacon ran fine last night, from 0000 to 0400 no fires! Alan reports fairly quiet conditions,so lets hope some copy over there. Will run again tonight, might as well catch
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00007.html (8,234 bytes)

273. LF: Re Re 73KHz Beacon (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Fri, 29 Jun 2001 21:37:50 +0100
Frequency nearer to 71,921.5KHz. 30 sec dots of course. 73, Laurie.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00009.html (7,624 bytes)

274. LF: re 73KHz Beacon tonight. (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Fri, 29 Jun 2001 21:07:36 +0100
Hi John, All set to run tonight from about 0000UTC until 0400 UTC. Freq 71.922 DFCW. Hope the TX does'nt blow up Hi. Best wishes. 73s Laurie.
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00011.html (7,886 bytes)

275. LF: Re. 73KHz Beacon (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Fri, 29 Jun 2001 09:08:29 +0100
Hi John,Jim and all, I think that Solar conditions are now as good as they are going to get for a while,so I would like to try the beacon again for 2/3 nights.John will you be able to "look" starting
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00018.html (8,238 bytes)

276. LF: Re.73kHz (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Sun, 24 Jun 2001 20:13:29 +0100
Hi John, I hope to have my TX operational again by next weekend,so if you will have a recieve capability I will try to join Jim with some transmissions.Hopefully the present high Sunspot No's. will h
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00071.html (7,893 bytes)

277. LF: Re. 73kHz beacon/ant.problems (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Wed, 20 Jun 2001 12:15:10 +0100
Hi Tom and Jim, I can contribute to this discussion. I terminate all wires at least 2M from any leaves etc and notice no change when they are wet or dry,also no difference when the trees came into le
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00109.html (8,379 bytes)

278. LF: Re. A thank you etc. (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Sun, 10 Jun 2001 22:27:56 +0100
Hi Paul, I think you have a very good situation there with your 130 ft tower and tall trees.I should not atempt to feed the tower ,but use it as a support for an "L" shaped ant. with one or more top
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00215.html (8,267 bytes)

279. LF: RE. 73Khz. (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Sat, 9 Jun 2001 17:48:24 +0100
In a recent mail Mal said that he was not surprised that my sigs were heard/seen in Canada, and that all that is required is a high/ long Ant and 1-5W ERP. This is quite true but I should like to poi
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00220.html (8,252 bytes)

280. LF: Re. 73KHz T/A (score: 1)
Author: "Laurie Mayhead" <[email protected]>
Date: Fri, 8 Jun 2001 13:48:58 +0100
Hi All, I have just dismantled the B and K 1000 watt amp that failed the other night. I found a 2X2 inch area of the PCB completely burnt out ! including all the components in the output filter and r
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00232.html (8,107 bytes)


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