I haven't seen dual 2m antennas before, that I can recall. I'll have to ask about that. On my 2m antenna I had to trim a little from the tip, if that's what your asking. When I built the 70cm antenna I started out with a measurement someone gave me and turned out to be exactly the lenght I needed, no tuning required.When you calculate your length do you measure the length of the wire strait or after it was wound?
Also, on semi's it's best to run co-phased antennas since we can't mount in the center of the roof for a good ground plane, I assume the same would be true for the Jeep, when we were tuning Amy's new cb we got some odd swr readings. and her signal is much stronger to the front than the rear or sides.
Can you run co-phased 2 meter antennas? think it would make much difference?
Oh, looks like I have the avatar you need.