Hi All
Got a weird one for you.
I have Dressler D200S VHF Linear Amp which was given to me for contesting.
There has always been a strange problem which i originally thought was a
sticky relay
However after a while of looking at it. Its as if the amp wont Transmit
without it being on a really flat surface which caused problems for me
at the recent 144/432mhz contest
I can't figure out why it would require such a dead flat surface before
the needle moves and im putting power out.
It was working ok apart from this at home as i was putting out 120w with
5w drive provided I found the right spot for it but when i took it out
to the contest it just didn't want to Transmit at all and when it did
the power just decreased over 3-10 seconds and I couldn't get 120w out
of it max.
My thoughts are thats it might be a dry joint but the guy who had it
before me didn't ever report it had a problem but unforuntly he died a
couple of years ago.
So it only Transmits when its in a spot it likes after moving around my
windowsill
So any thoughts ?
Thanks
Will M0GYZ
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