But a gamma match is an un-balanced load and a 1:1 balun is not needed.


--
John Passaneau, W3JXP
Penn State University


"Bob Miller" wrote in message
...
On Tue, 16 Sep 2003 15:40:54 -0600, Bill VanAlstyne
wrote:

I want to create an air RF choke in the end of my RG-8/U feedline going
to the gamma match on my 6M yagi. Does anyone have a good workable
formula (number of turns of RG-8/U and diameter of coil)?

Bill / W5WVO


You might be able to extrapolate from this info -- the arrl antenna
book shows a 21 mhz choke of rg-8 is 8 ft. of coax, 6-8 turns; a 28
mhz choke is 6 ft., 6-8 turns.

Bob
k5qwg