Here is my somewhat off-topic question for today:
I have an R8 vertical, which does its bandswitching with a combination
of stubs and traps. The other day I was transmitting CW on 40M with
about 1200 watts and a normal SWR of less than 1.5:1. Suddenly the SWR
went sky-high. Now the antenna doesn't work on 7 and 10 MHz, although it
is fine on the higher bands. It looks to me like I blew the 30M trap. So:
1. Do you folks think this is a correct diagnosis? I will have to take
the antenna down to be sure, and that won't be fun since it is on top of
a 10-story building.
2. I have heard of this happening with the R8, although it is rated at
1500W CW according to the manual. But I always thought the people it
happened to were operating at high SWRs. Maybe these are 1500 MFJ watts,
which, as everyone knows, are smaller than regular watts. Has anyone had
a similar experience?
3. Should I have bought a KPA500 which wouldn't stress the antenna as
much? :-)
--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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