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221. Re: LF: Wire, for LF Antennas (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 28 Jun 2000 13:39:00 +0100
Preparations continue for TransAtlantic II, the test transmissions from here in Eastern Ontario on 137.710 kHz are now heard widely in the USA and Canada. Larry, It would help if you could give an id
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-06/msg00231.html (8,945 bytes)

222. Re: LF: Louis, G5RV, Silent Key (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Thu, 29 Jun 2000 18:00:11 +0100
I have just had a short email on the FOC reflector saying that Louis, G5RV has passed away at noon UK time yesterday. See the rsgb web site for more info. Mike Dennison, G3XDV Publications Manager *
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-06/msg00238.html (8,198 bytes)

223. Re: LF: Re. 72KHz etc. (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 13 Dec 2000 16:40:55 +0100
the B@K amp. didnt like the load and its now only giving me half power,so I guess I will be in listening mode now for a bit 73s Laurie. Although these amps are very sturdy, I have blown a couple up.
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-12/msg00323.html (8,516 bytes)

224. Re: LF: CFH recordings (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 13 Dec 2000 16:04:22 +0100
If CFH remains on carrier for the next days it might be interesting to have a 'CFH recording night' where we try to get CFH recordings from a number of different locations at the same time. Using the
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-12/msg00324.html (9,180 bytes)

225. Re: LF: Re: Re: 73 khz permits (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 13 Dec 2000 15:54:35 +0100
To clarify the 73kHz permit situation once and for all, for the benefit of Mal and anyone else who is confused, the RSGB has never issued Notices of Variation for the 73kHz band. These were, and stil
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-12/msg00325.html (10,640 bytes)

226. Re: LF: QRO or QRP? (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 31 Jan 2001 18:35:36 +0100
As long as You can put your 200 mW TX into your pockets it will be QRP. Oh dear! Have you seen a Decca Tx? It is rack mounting and very heavy. Is that an LF transmitter in your pocket or . . . . Mike
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00006.html (10,048 bytes)

227. Re: LF: Morning noise levels (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 31 Jan 2001 14:08:12 +0100
If you care to trawl Rik's web site there are several plots on 137kHz when CFH has gone off that indicate the noise here is related to the oncomming daylight. What we need to establish is: Is this r
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00027.html (10,378 bytes)

228. Re: LF: Please more normal CW activity on Saturday and Sunday morning (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 31 Jan 2001 10:59:45 +0100
I run 700W RF to make less than 200mW ERP. Is that QRO or QRP? Mike, G3XDV (IO91VT) http://www.lf.thersgb.net
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00034.html (10,366 bytes)

229. Re: LF: Noise and ARGO AGC (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 31 Jan 2001 10:59:23 +0100
we have to investigate why the noise suddenly drops around 7 a.m., but not always ... ? I presumed the cause was the street lights, but the timing is different. I agree that this effect appears to be
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00035.html (9,482 bytes)

230. LF: VA3LK clear in daylight. (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Tue, 30 Jan 2001 11:01:51 +0100
I monitored all night for Larry but nothing seen because of high noise. This went off abruptly just after 0700, and I saw 'K CQ' ending at 0805 which was in total daylight at my end. The 'C' was very
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00064.html (8,961 bytes)

231. LF: VA3LK seen (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Mon, 29 Jan 2001 11:39:04 +0100
After about a week of monitoring, I have now seen some CW characters from VA3LK. Not a complete callsign as yet, but certainly 'LK' and a 'Q'. These seemed to come out of the noise for just one, or e
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00086.html (8,921 bytes)

232. Re: LF: Minimalist QSO, a process (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Fri, 26 Jan 2001 18:42:30 +0100
Step 1 M0BMU VA3LK va3lk sending Step 2 VA3LK M0BMU O m0bmu sending Step 3 RO O va3lk sending Step 4 RO m0bmu sending Step 5 E E va3lk sending Step 6 E E m0bmu sending Hmmmm. I like the use of the Es
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00170.html (11,782 bytes)

233. Re: LF: Stability (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Thu, 25 Jan 2001 18:07:40 +0100
what antenna are you using for receiving ? I'm using my transmitting antenna and found that I can add up to 40dB attenuation between antenna and RX (Kenwood TS440) before the bandnoise hits the RX n
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00205.html (10,054 bytes)

234. LF: Stability (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Thu, 25 Jan 2001 11:50:04 +0100
Yesterday, I commented on frequency drift seen when using extremely narrow bandwidths. I assumed the cause was my IC-706 Mk1. However, on further investigation, I found the problem was my Datong conv
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00216.html (9,203 bytes)

235. Re: LF: RE: Larry's signals last night 22/23 Jan (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 24 Jan 2001 13:54:50 +0100
G4JNT wrote: I agree with the best times, certainly after 0700z signals rise and noise levels fall. In fact, most mornings I see a quite abrupt drop in noise level a bit before 0700, well before stre
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00262.html (9,241 bytes)

236. Re: LF: Argo, some points (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 24 Jan 2001 13:44:17 +0100
VA3LK wrote (about Argo): and last but not least I have a physical problem of setting the Frequency bar on the right side of the screen, the tiny increment of hand moves up to 50 Hz or so on the narr
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00263.html (8,918 bytes)

237. LF: QRSSSS - first results (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Wed, 24 Jan 2001 10:42:04 +0100
I tried using the latest Argo to receive VA3LK last night and came across two problems. Firstly, the frequency stability - presumably of my IC-706 Mk1 - was not good enough for the 30s dot setting. A
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00271.html (8,504 bytes)

238. Re: LF: Pyrotechnic insulators (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Tue, 23 Jan 2001 18:04:19 +0100
Keen subscribers to this group may remember that my cable-tie insulators failed last weekend, and that I assumed this was due to them becoming brittle in the sub-zero temperatures. I took the mast d
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00292.html (9,775 bytes)

239. Re: LF: Please more normal CW activity on Saturday and Sunday morning (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Tue, 23 Jan 2001 17:50:05 +0100
PA0SE wrote: . . . . . . . . . . invariably the question comes what the best times are to listen for a signal. My answer has always been "Saturday and Sunday morning". But I'm afraid that won't help
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00293.html (10,857 bytes)

240. Re: LF: Testing LF losses in materials (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Tue, 23 Jan 2001 16:10:29 +0100
I have certainly used Andy's technique with the microwave oven to test some materials. Obviously any 'resistive' losses with generate heat I once had the idea of making my mast-head loading coil look
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-01/msg00300.html (9,323 bytes)


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