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Old February 18th 07, 05:52 AM posted to rec.radio.amateur.antenna
Jimmie D Jimmie D is offline
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First recorded activity by RadioBanter: Feb 2007
Posts: 287
Default Trimming 2m 5/8 wave antenna for 156 mhz ???


"Tom Ring" wrote in message
. ..
Jimmie D wrote:

"James" wrote in message
. ..

Dave, as stated in my OP, this is a 5/8 wave antenna. It is the
antenna
that I have bought and that I will use temporarily. This will be for a
very
temporary use, and I agree with your suggestion about a marine 1/2 wave,
which I will do later on.

My question is "about" how much to trim for 156 mhz use. I will use an
SWR meter to get it right on spot, but I would like a feel for how much
to
trim. It is tricky to calculate , even using the "468" formula,
because of it being base-loaded.

73 de Jim K4PYT




Triming alone want do it, the base is designed to match the 5/8 2m to 50
ohms. Unless you can also figure out a way to modify the matching network
you cant do it.


B as in B, S as in S. It is plenty close enough to work just fine with a
little trimming.

And B means Bull, and S means ****.

tom
K0TAR



No need for the vulgarities but you are correct, it will probably work.
Sorry didnt mean to bring out any hostility.

Jimmie