[Towertalk] Freq on Ground and On Tower

[Tom Martin]

I should have mentioned that it is a two element wire beam using bamboo to
support the 12 gauge stranded wire.  I will tilt it and measure again.  I
am feeding directly with RG 213 with a .20 spacing.

Tom W8JWN

Tom Martin wrote:

> I built a 15 meter beam with the DE cut for 21.250.  The MFJ analyzer
> reads 23.000 for a 1-1 match.  I added about 8 inches and the best SWR
> is at 22.500.  These tests were made at 10 feet.  Will the frequency go
> down when the beam is at 40 feet?  I can't believe that I have to keep
> adding to the DE.
>
> Tom W8JWN
>
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