18 Apr
2011
18 Apr
'11
8:47 a.m.
On 4/18/11 10:18 AM, dwight elvey wrote:
I thought I'd mention, the recieving antenna is
quite forgiving about wavelengths
but the transmitting antenna needs to be tuned or you'll damage your final.
And I will throw in here, for both points: Tuned antennas for
receiving do work better than untuned ones, and all (or nearly all) rigs
with solid-state finals will back off the drive as SWR goes up.
Making a tuned antenna in the attic can be a little
tricky.
...and don't fall into the "transmatch as a panacea" trap. Antenna
tuners are almost always useful, and with any half-decent one you can
get a nearly-1:1 SWR with pretty much anything that conducts, but that
won't make it a good radiator. Remember, a dummy load has 1:1 SWR!
-Dave
--
Dave McGuire
Port Charlotte, FL