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Telamon · December 1st 07, 03:41 AM posted to rec.radio.shortwave

In article
,
wrote:

Steve wrote:
On Nov 30, 9:14 am, wrote:
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RF grounding and antenna concepts:

I use a dual band j-pole antenna on 2 meters and 70 cm. It works
very well above ground.

My whole point with the post that with the correct antenna, we avoid
trying to use the poor conductivity of the earth as a major part of
the antenna. And J-poles are great antennas.

I have a ~850MHz trunking antenna that mounts on a standard MNO
connector. We streteched it slightly and the VSWR on 146 is 1.1:1 and
mid band 70cM is 1.3:1. More then enough for local mobile comms.

Trying to document any type of situation is as endless as the
possibilities they represent. That's why you are far better off citing
general principles for antennas or grounding or EMI/RFI for that matter.

Quite frankly I'm not willing to go through very log posts that address
many issues. Better to pick one issue at a time so the resulting threads
make sense.

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Telamon
Ventura, California