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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Re\:\s+ANTENNAS\s*$/: 11 ]

Total 11 documents matching your query.

1. LF: Re: ANTENNAS (score: 1)
Author: <[email protected]>
Date: Fri, 23 Nov 2018 02:44:45 +0100
Laurence This is what I have found at my QTH. It stands to reason that the capture area of a small loop is no match for an array of resonant wires at 100ft in my case spread over about 5 acres of ope
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00530.html (11,710 bytes)

2. LF: Re: ANTENNAS (score: 1)
Author: <[email protected]>
Date: Mon, 26 Nov 2018 19:21:10 +0100
A wellbrook loop is a very SMALL loop about 1M diameter. Plenty of elevated wire as high as possible is the answer on LF/MF MAL/G3KEV Hello Mal, It was me,2E0ILY. Thanks for the info. The Wellbrook l
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00639.html (10,494 bytes)

3. LF: RE: Antennas (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Wed, 3 Aug 2011 21:38:43 +0200
Hi Chris, the quality of the received signal it determined by it's SNR. So if you have an antenna where QRM/QRN are at a higher level than the RX noise it makes no sense to get a larger antenna (= pr
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-08/msg00592.html (11,519 bytes)

4. LF: Re: Antennas (score: 1)
Author: "mal hamilton" <[email protected]>
Date: Wed, 3 Aug 2011 19:47:17 +0100
Chris Signal over noise is different to max sensitivity. ie signal 10 dB noise 8 dB therefore S/N 2 dB but with a rhombic the same signal would be 30dB and noise maybe 12 dB therefore S/N would be 18
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-08/msg00774.html (10,454 bytes)

5. LF: Re: Antennas (score: 1)
Author: "James Moritz" <[email protected]>
Date: Mon, 02 Jan 2012 21:04:11 +0100
Dear Mal, LF Group, When I was in the business some years ago on LF/MF Rhombics and V-Beams were the norm de mal/g3kev Since rhombic and vee designs usually end up at least a few wavelengths long, an
/rsgb_lf_group-archives/html/rsgb_lf_group/2012-01/msg00897.html (11,021 bytes)

6. LF: RE: Antennas (score: 1)
Author: "Phil Daniells" <[email protected]>
Date: Mon, 21 Jun 1999 15:57:30 +0100
I have done very many antenna experiments over the past 2-3 years to get a better signal at 73 and 136kHz from a small garden. I have experimented with inverted-L Marconis. These have mainly sloped d
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-06/msg00122.html (9,803 bytes)

7. LF: Re: Antennas (score: 1)
Author: "Dick Rollema" <[email protected]>
Date: Tue, 22 Jun 1999 10:30:46 +0200
G3XDV de PA0SE Mike, One a similar topic, what influences the capacitance of a multi-wire top section? Is it simply wire diameter so a thick wire has more capacitance than a thin wire? What about mul
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-06/msg00124.html (9,181 bytes)

8. Fw: LF: Re: Antennas (score: 1)
Author: "Dick Rollema" <[email protected]>
Date: Wed, 23 Jun 1999 20:18:26 +0200
IK1ODO de PA0SE I understand that your TX (if not you!) will go to Friedrichshafen. May you send a copy of the chapter to Friedrichshafen? I am very interested, even if my three-wire top hat seems t
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-06/msg00129.html (9,675 bytes)

9. LF: Re: Antennas (score: 1)
Author: "Prof R. Jennison" <[email protected]>
Date: Wed, 23 Jun 1999 17:23:54 -0400
The spacing between the wires on the horizontal top section is simply dictated by the fractional wavelength and the degree of efficiency required versus the mechanical and economical constraints of h
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-06/msg00132.html (8,099 bytes)

10. LF: Re: Antennas (score: 1)
Author: "Dick Rollema" <[email protected]>
Date: Fri, 10 Mar 2000 12:30:21 +0100
To All from PA0SE Software such as EZNEC gives the result that there is zero propagation along the horizontal with anything other than perfectly conducting ground, but we all know this is not so. Tha
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-03/msg00121.html (9,024 bytes)

11. LF: Re: antennas (score: 1)
Author: "g3ldo" <[email protected]>
Date: Thu, 19 Dec 2002 21:20:00 +0100
No. Sorry if I was unclear. I have three top wires, 18m long, running parallel and spaced 0.5m apart. The wires have always been joined at the far end, and this helps reduce the corona losses. I also
/rsgb_lf_group-archives/html/rsgb_lf_group/2002-12/msg00190.html (13,595 bytes)


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