Jimmie D wrote:
Kurt wrote:

Well, I had set the program to optimize the antenna for 433Mhz
as that is what I was going to start with on my tracking transmitter.
Plugged the Yagi into my handheld, set the power to low, set the fwd
indication on my SWR meter and then did the ref reading. I was shocked
to see that it was 1:1.2. Set it up to 450Mhz and saw it was 1:1. For
this new ham, it was pretty surprising for a first project.

This is exactly why I never trusted gamma matches on 70 cm. I consistently
got nearly perfectly flat matches all the way across the band using a gamma
match. This usally something aint right. and the antenna is probably
radiating more in the infra-red region than at the desire frequency. No
doubt there are others more skilled than I who can make it work For me the
quagi has worked to damned well for me to bother.

Jimmie.


Thanks for the info Jimmie. I gotta find a 70cm repeater in a
reasonable range and see if I can get some signal reports. As
mentioned, I was tentatively going to use this for RDF so in actuality
I could just connect it to a handheld scanner. I was told though if an
antenna demonstrated a good SWR on transmitting it should be good for
receiving. Sounds like that may not be the truth though judging by your
experience.

Kurt