[Antennas] re:Gamma Match
Alan Hughes
zl3kr at ihug.co.nz
Wed Jan 12 16:00:12 EST 2005
Thanks Jens,Alex & Robert for your replies.
My initial calculations were done using the Gamma match program by
K4VX. I am using 1 inch tubing for the Elements and 1/2 inch tubing for
the gamma rod with 3.25 inch spacing. I have varied the length of the
gamma rod and although a change in capacitance is required the impedance
did not change which I guess is why I am getting splinters under my
finger nails with all the head scratching. According to K4VX's program
if I change the spacing down to 2 inches the length of the gamma rod
increases by about 4 inches and only just over 1 pfd capacitance change.
I varied the length of the rod by up to 3 or 4 inches in either
direction with virtually no change.
Alan ZL3KR
More information about the Antennas
mailing list