"Jimmie D" wrote in message
...

"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


Anyway, I was kind of thinking keeping it as a 5/8th's, I guess I am guilty
of having a one track mind. I agree with Tom that the hamstick will probably
resonate but cut somewhat shorter than a 5/8ths to make up for the extra
wire the 2 meter matching coil has. You will probably wind up with a 9/16ths
antenna |. If memory serves the hamstick does not use a tapped coil
matching network, just a series coil. I have tried cutting one of tapped
coil types for 153Mhz and was barely able to get it to work at with an
acceptable SWR, good luck

Jimmie