[Heathkit] HD-1481 Coax Antenna Switch - Odd Behavior?

[Mike McCarty]

jack m wrote:
> I recently procurred an HD-1481 4-pole remote antenna switch at a
> hamfest.  When put in service, the remote unit switches across all 4
> antennae in a perceived "normal" manner as monitored in the receiver.
> However, when a low-SWR 100 watt transmitter signal is applied
> through the control box SO-239's, the remote unit seems to "lose" the
> signal (regardless of the 4-position selection number) on the
> receiver upon release of the PTT mic switch, but it can be
> "recovered" by simply switching the antenna from another antenna
> selection position, then back.  This occurs on 80, 40, 20 and dummy
> loads, although I tested the dummy position by moving an antenna to
> that position.

This sounds like dirty contacts to me. They work fine for reception,
but heat up on transmit. Switching away and back "cleans" the contact
slightly, and restores reception.

Mike
-- 
p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}
Oppose globalization and One World Governments like the UN.
This message made from 100% recycled bits.
You have found the bank of Larn.
I speak only for myself, and I am unanimous in that!