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Total 5 documents matching your query.

1. LF: Active loop antennas (score: 1): Author: Chris Wilson <[email protected]>; Date: Mon, 16 Apr 2018 12:47:31 +0100; Hello LF'ers I am having no luck with my mini whip antenna, for whatever reason it seems very deaf, so was wondering if I can home brew something like the magic box of tricks for the (expensive IMHO); /rsgb_lf_group-archives/html/rsgb_lf_group/2018-04/msg00249.html (8,331 bytes)
2. Re: LF: Active loop antennas (score: 1): Author: Andy Talbot <[email protected]>; Date: Mon, 16 Apr 2018 12:56:36 +0100; http://www.lz1aq.signacor.com/ For LF use you could probably increase coupling caps and use a bigger loop, and change the input LPF This is the one members of our club (IVARC) have been making as a c; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-04/msg00250.html (10,808 bytes)
3. Re: LF: Active loop antennas (score: 1): Author: Andy Talbot <[email protected]>; Date: Mon, 16 Apr 2018 12:58:02 +0100; More accurately, this is the URL http://www.lz1aq.signacor.com/docs/wsml/wideband-active-sm-loop-antenna.htm 'jnt On 16 April 2018 at 12:56, Andy Talbot <[email protected]> wrote: http://www.lz1aq; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-04/msg00251.html (11,350 bytes)
4. Re: LF: Active loop antennas (score: 1): Author: "P. W. Schnoor" <[email protected]>; Date: Mon, 16 Apr 2018 20:54:15 +0200; Hi Chris, I'm running this pre-amplifier attached to a single turn loop, an equilateral triangle with 10 metres of circumference (~13 uH). C1 (150nF here) is needed to block "KIL" (NDB, 353 kHz) at 8; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-04/msg00257.html (8,545 bytes)
5. Re: LF: Active loop antennas (score: 1): Author: Chris Trask <[email protected]>; Date: Mon, 16 Apr 2018 17:21:09 -0400 (EDT); That's an intersting and simple design. I have only found a few specs for that 1NA217 device, but even those are impressive in terms of THD and input noise voltage. Since it is good up to 800 kHz it'; /rsgb_lf_group-archives/html/rsgb_lf_group/2018-04/msg00258.html (9,668 bytes)

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