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361. Re: LF: RE: 136kHz activity 21 March [G3MFW] (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 23 Mar 2009 12:00:57 +0100
Hi Harry congratulations on your successes on LF it is great to have someone down in your area....I see you have discovered the real "secret equation".... LF = Lotsa Friends = Lotsa Fun Best Wishes A
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-03/msg00049.html (11,246 bytes)

362. Re: LF: RE: Syncback software (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 16 Mar 2009 20:46:05 +0100
Hi Gary my only comment is that you may have too much gain in the system. It is sometimes better to have the noise further down nearer the axis. I am afraid there is a major problem with this kind of
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-03/msg00086.html (21,020 bytes)

363. LF: Fw: EI--- 500khz permit applications (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sun, 29 Mar 2009 16:05:20 +0100
Hello Alan, The LF reflector does not seem to accept my posting. Could you kindly forward please? Best regards Mike. _______________________________ It was announced on the IRTS news today that appli
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-03/msg00116.html (9,450 bytes)

364. LF: Re: AFJ 's Grabber closed ! (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sat, 21 Mar 2009 13:15:03 +0100
Hi Jean Pierre thanks for your reports enjoy your "holiday" Alan G3NYK Hello LF , The grabber will be closed for a few times, two reasons with that : 1/ by carrying out my tests of TXing I killed my
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-03/msg00123.html (9,812 bytes)

365. Re: LF: RE: Syncback software (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 16 Mar 2009 23:20:16 +0100
Hi Gary I think Andy answered the question. My list downloads are coming in strange orders sometimes. Alan -- Original Message -- From: "Gary - G4WGT" <[email protected]> To: <rsgb_lf_group@blacksh
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-03/msg00346.html (23,259 bytes)

366. LF: Re: Ropex Info? (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Fri, 20 Mar 2009 18:53:12 +0100
Hi Warren Andre Kesteloot N1CK (?) might be be a good start. I think Andre moved one to the AMRAD Part 5 frequency. I have aa feeling that there is a web site with information on too ....may a PA0 ca
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-03/msg00368.html (10,133 bytes)

367. LF: Re: energy saving bulbs (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sun, 08 Mar 2009 16:43:52 +0100
Peter some do and some dont. I have found the Osram bad and the Philips best so far. There are a number of other things to think about too. One, in normal replacement for tungten Fil they do NOT last
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-03/msg00460.html (12,606 bytes)

368. LF: Re: RE: Re: energy saving bulbs (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 09 Mar 2009 00:00:54 +0100
Hi Chris with respect, the articles and ads and PR don't talk about light output but "saving energy", as I said they are not considered "domestically fashionable" but strip lights still are more effe
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-03/msg00474.html (14,996 bytes)

369. LF: Re: Re: 518khz - Notch Filter. (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Thu, 21 May 2009 11:32:29 +0100
Hi Jim ah now that is nice, it nicely get round the loading effects on the bridged-T in a 50 ohm environment. I guess a higher Q coil would be easy to fabricate if necessary. May I add that to the pa
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00099.html (12,402 bytes)

370. Re: LF: Re: Field Strength Meter - advice needed (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 4 May 2009 10:31:09 +0100
Hi Chris Mmmmm it seems that you might have a problem with the tuning caps, I wonder what sort you used. You have to be a bit careful with cap types in critical circuits. The other though is to try t
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00122.html (13,799 bytes)

371. LF: Re: Field Strength Meter - advice needed (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sun, 3 May 2009 21:00:26 +0100
Hi Chris the following things occur to me to try 1 the 2N3819 is a juction fet not a mosfet (as with Dick original design) so is probably more likely to show changes in input (gate-source) current wi
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00202.html (11,665 bytes)

372. LF: Re: Modelling aerials (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 25 May 2009 00:59:35 +0100
Hi again Richard. I think the answer is dont waste your time. LF/MF aerials are so short and depend so much on ground and none of the systems model them very well at all. Roy Llewellin admitted as mu
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00321.html (11,563 bytes)

373. LF: Re: 518khz - Notch Filter. (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Tue, 19 May 2009 23:08:35 +0100
Hi Gary see the "notch" I designed for Hugh to reduce DCF39 a little at http://www.alan.melia.btinternet.co.uk/BR-t-Notch.htm The plot will give some idea of the possible reduction in wanted signal.
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00370.html (11,994 bytes)

374. Re: LF: Re: 600MRG> T or F? (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Wed, 6 May 2009 00:45:13 +0100
Hi Dave ask why people use invL and T's. Well if you took your trees away and put up an inv L of the same size you would have a bigger signal (field-strength) than would be given by the loop. Amongst
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00384.html (10,787 bytes)

375. LF: Re: Japan (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sat, 2 May 2009 12:09:58 +0100
Hi Laurence, Obviously those fiendishly clever orientals have devised a way of frequency compresion ?? Alan G3NYK -- Original Message -- From: "Laurence BY3A-KL1X China" <[email protected]
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00425.html (9,547 bytes)

376. Re: LF: 500 kHz resonators at nedis.com (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 15 Jun 2009 16:09:40 +0100
Hi Rik that would work quite well, there were some parameters for the resonators at 4MHz discussed on the emrfd group recently. The parameter measurement methosd are the same, but they were using the
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-06/msg00019.html (13,423 bytes)

377. LF: Re: 500kHz Diurnal Noise Variation (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sun, 7 Jun 2009 11:48:40 +0100
Hi Richard, I think the noise variation is very similar to that on 136k and relates to the position of the the dawn/disk edge. In the morning as the dawn sweeps west across Europe the night-time skyw
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-06/msg00086.html (11,026 bytes)

378. Re: LF: New WSPR Beacon design software (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Sat, 13 Jun 2009 20:53:35 +0100
Now Now Alberto dont encourage him. I am sure Andy has enough bad habits already :-)) Alan G3NYK -- Original Message -- From: "Alberto di Bene" <[email protected]> To: <[email protected]> Cc:
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-06/msg00145.html (9,948 bytes)

379. Re: LF: 500 kHz resonators at nedis.com (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Mon, 15 Jun 2009 14:38:03 +0100
Hi Rick there is a problem building a sharp ladder filter with 500 or 455 kHz resonators. I have played with a number. the difficulty seems to stem from the fact that to get a narow filter you have t
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-06/msg00148.html (11,807 bytes)

380. Re: LF: G7NKS (was XGJ) (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Fri, 5 Jun 2009 00:17:31 +0100
Jim Please DO NOT hi-jack a subject line by using the reply button to send a new message. The result is a thread of messages that have nothing to do with Warren WD2XGJ and I almost didnt read them. P
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-06/msg00181.html (11,441 bytes)


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