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381. LF: Re: Off Topic - Spam mails. (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Tue, 23 Jun 2009 20:05:34 +0100
I am afraid not Gary, I have been seeing these and getting non-delivery notices for years. I stopped signing my messages with my address when I realised it was being harvested. Anyone can "forge" an
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-06/msg00300.html (10,280 bytes)

382. Re: Re: LF: Microwave oven transformers (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 15 Jul 2009 14:57:11 +0100
Hi all, I am very please to see not everyone sticks to a 12 volt maximum supply voltage One though that occurs to me is that if one side of the MO transformer is grounded in oven service........one o
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-07/msg00069.html (11,756 bytes)

383. Re: LF: [137kHz] T/A WD2XGJ (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Thu, 23 Jul 2009 17:56:44 +0100
Hi Warren and listeners.....yes there was a sudden KP=6 which depressed the Dst to -65nT and Steve W4EEE's plot of DCF39 was noticably lower than previous night. I think things should recover fairly
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-07/msg00107.html (11,136 bytes)

384. LF: Re: 504khz harmonic. (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 20 Jul 2009 11:40:49 +0100
Hi Gary, the mini-whip is not bad but where you are located it could be the size of the 252 signal is producing some intermod/harmonics. Do you get the same effect on a wire, or passive antenna? I ha
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-07/msg00171.html (11,542 bytes)

385. Re: Re: LF: Microwave oven transformers (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 15 Jul 2009 21:59:44 +0100
Hi Ken yes I appreciate the usage. I was a little concerned that if the transformer was not designed for that kind of use it might not necessarily have sufficent insulation from that end of the windi
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-07/msg00185.html (13,725 bytes)

386. Re: Re: LF: Microwave oven transformers (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 15 Jul 2009 23:40:00 +0100
Great but of "recycling" Bob :-)) Alan
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-07/msg00189.html (11,677 bytes)

387. LF: Re: Notice for Lawrence Mayhead (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 5 Aug 2009 10:17:43 +0100
Hi John, sad to say, it does look very likely. I dont know the family but the location is correct. I know he has not been too well over the last year. Alan G3NYK Message: Friends, Is this G3AQC? John
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-08/msg00124.html (10,354 bytes)

388. Re: LF: Re: 500kHz qrg range (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Tue, 18 Aug 2009 23:56:40 +0100
Hi Dennis I guess insertion loss is fairly easy to deal with at these frequencies. Would it not be better to consider what you need to reject rather than how little to accept? This would make the tui
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-08/msg00125.html (12,058 bytes)

389. LF: Re: Re: US 500-kHz band plan (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 21 Sep 2009 14:40:29 +0100
Hi Jim. whist it involves a change in "usage" from our end it would not seem unreasonable to ensure that the US stations have a chance of hearing us without nearby swamping. I think this is an intere
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-09/msg00249.html (14,973 bytes)

390. LF: Re: Re: WSPR 137.0k (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sun, 20 Sep 2009 15:32:22 +0100
Did you get any Canadian submarines replying :-)) Alan G3NYK 137.0kHz few
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-09/msg00779.html (11,233 bytes)

391. Re: LF: Re: Propagation report...gripe! (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 7 Oct 2009 22:58:59 +0100
Please dont "steal" subject lines !! I would hope everyone here would have enough intelligence to use an address book and type a relevant subject....at best it darn right rude to the originator !! AN
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-10/msg00013.html (10,393 bytes)

392. LF: Re: 500kHz attenuation graphs? (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sat, 31 Oct 2009 15:21:12 +0100
Hi Roger you will find that the late Reg Edwards programs GRNDWAV3 (I think) gives a very good idea of ground wave strengths. I do have an article here (somewhere) from Jack Belrose with I believe so
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-10/msg00182.html (10,246 bytes)

393. LF: Re: Propagation report (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 7 Oct 2009 19:01:13 +0100
Hi Warren thanks for your concern....yes I am fine if somewhat overworked at present, and I have also been running up a new computer so having to transfer all the apps....I promise I will get it up a
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-10/msg00288.html (10,741 bytes)

394. LF: Re: RX and Sound Card (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Thu, 1 Oct 2009 23:48:54 +0100
Hi Jim, I guess that could be frustrating to some who maybe do not understand the limitations enough, but would seem to work ok within them. The ideal method at 136 as you say was to use Loran sideba
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-10/msg00300.html (11,570 bytes)

395. Re: LF: OT: Reliants (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sat, 24 Oct 2009 23:05:50 +0100
Ah Warren you mis-interpreted that picture!! it was a Reliant Robin fitted to the base of a 160m whip :-)) Alan G3NYK Many years ago there was a picture in QST of a Robin Reliant fitted for 160 meter
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-10/msg00397.html (10,962 bytes)

396. LF: Re: Wireless in a Coal Mine by 2ZD (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 28 Oct 2009 22:11:47 +0100
Hi John contact the guy at HQ who runs the Museum. I dropped in an "RSGB" diary for 1926 which had a call book bound into it he should be in there. It was in Arthur Gee's (G2UK) effects. I should hav
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-10/msg00570.html (9,287 bytes)

397. LF: Re: Re: Re: AF Amps at 136 (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sun, 18 Oct 2009 15:35:32 +0100
Chris try single ended Class-E very simple, ok they need a modicum of tuning but have been used successfully by Mike GW4HXO and Finbar EI0CF and others up to about 500W. I have some notes on experime
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-10/msg00604.html (12,543 bytes)

398. LF: Re: Best receiving antenna wanted (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Thu, 22 Oct 2009 00:19:22 +0100
Hi Horst, Mmmmm your problem may not be the antenna it may be your use of the level measuring set !! A "good" receiver would work well at LF off that kind of aerial. You must remember that these LMSs
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-10/msg00691.html (11,326 bytes)

399. LF: Re: RE: Re: RE: G7NKS multiple WSPR decodes! (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Thu, 12 Nov 2009 01:51:56 +0100
Ah the dreaded laptop. Ok the isolation that is agood idea in that case you must make sure you have some Rf grounds somewhere. Laptops seem to float there is not reason (for the digital engineers who
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00050.html (14,763 bytes)

400. LF: Re: LEONIDS and propagation (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 16 Nov 2009 21:24:22 +0100
Hi Andy observations over several months by some of the VLF group suggest that whilst there are some radio effects from meteors at low frequencies they are very weak and difficult to be sure of. In g
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00061.html (12,384 bytes)


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