On Tue, 16 May 2006 14:30:52 GMT, Cecil Moore
wrote:

Buck wrote:

Cecil Moore wrote:

Buck wrote:
Ok, I learned something, but I would be inclined to go with the 1/2
wave of 75 ohm and then the 50 ohm

"1/2 wave of 75 ohm" would make matters worse for a 25 ohm
antenna since the SWR would be higher than for 50 ohms.
What you need is 1/4WL of 35 ohm coax like RG83.

OOPS, I went back to the original problem with 100 ohm

Then you should use 1/4 wave of 75 ohm, not 1/2 wave.
ok, a 100 ohm load fed with 50 ohm coax is a 2:1 swr. Fed with 75 ohm
coax, it is 1.33:1 ??

If the 75 ohm is fed with 50 ohm coax 1/4 wave down the 75 ohm coax,
it will be a close match?

Why did the impedance change to 52 ohms?
--
73 for now
Buck
N4PGW