Hi Scott

No doubt others will give you much better info than I.

The gamma macth feed is irrelevent. If you have a resistive 50 ohm load
for each antenna at its operating frequency it makes the maths of using
tuned coax lengths a little easier. I would have to sit down and think
about it a bit deeper but on the surface it looks like;

Use a 1/4, 3/4, 5/4 etc wavelength of coax on 2M to attach the 6M
antenna to the T piece. The logic is that the lowish impedance of the 6M
antenna on 2M will be transposed to a high impedance at the T piece, the
net result being little effect to feeding the 2M antenna.

Do the reverse when feeding the 2M antenna.

Problem - There is a relatively close harmonic relationship between 6M
and 2M. ie a 1/4 wavelength on 6M is close to a 3/4 wavelength on 2M. If
you think about it you will note that any 6M length will also be a 2M
length! You cant actually get away from the problem! This feeding
technique is only really usable when there isnt a 3:1, 5:1 etc frequency
relationship.

You are welcome to a spare coaxial relay I have! I dont however have
spare N connectors. If you want it pls email me direct.

Cheers Bob W5/VK2YQA East Texas

Scott wrote:


I have a temporary tower set up with a 6M yagi on it. I'd like to add a
2M yagi. Is it possible to feed the two antennas with one feedline
similar to feeding multiple HF antennas with one feedline?