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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Amp\s+metres\s*$/: 4 ]

Total 4 documents matching your query.

1. LF: Amp metres (score: 1)
Author: "vernall" <[email protected]>
Date: Thu, 30 Mar 2000 07:01:35 +1200
g3kev wrote: snip snip At this frequency with both antennas resonant on 136 khz on the same site, the induced rf from the small vertical into the larger one would distort any meaningful tests. The an
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-03/msg00291.html (9,599 bytes)

2. Re: LF: Amp metres (score: 1)
Author: "Bob Eldridge" <[email protected]>
Date: Wed, 29 Mar 2000 21:44:02 -0800
An amateur regulatory constraint of 1 watt eirp limit starts to bite in to the transmitter power budget for taller (more efficient) antenna systems. Bites in even more with a smaller antenna surely!
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-03/msg00297.html (8,138 bytes)

3. Re: LF: Amp metres (score: 1)
Author: "vernall" <[email protected]>
Date: Thu, 30 Mar 2000 23:05:49 +1200
Bites in even more with a smaller antenna surely! What I meant to suggest was that a small antenna needs a great deal of applied power to achieve a radiated power of 1 watt. For most hams, it is impr
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-03/msg00301.html (9,299 bytes)

4. Re: LF: Amp metres (score: 1)
Author: "Mike Dennison" <[email protected]>
Date: Thu, 30 Mar 2000 14:10:13 +0100
I also believe that all short verticals have the same basic radiation pattern (the upper hemishere of a doughnut, with low angle suckin if ground loss is significant). I was privileged to see Dud Ch
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-03/msg00303.html (9,282 bytes)


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