[1000mp] Bad Antenna Relay?

Wed, 15 Oct 2003 01:50:38 -0700

The return of my problem suggests either:

* the offending relay was replaced with an equally failure-prone unit.
* rather than self-burnishing, mine have partially self-destructed.

It's not the problem that bothers me as much as Yaesu's stonewall silence
about it.

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Earl W Cunningham
Sent: Tuesday, October 14, 2003 6:16 PM
To: [email protected]
Subject: Re: [1000mp] Bad Antenna Relay?

Barry, N1EU wrote:

"So yet again, I offer up my contrary theory that it has nothing to do
with relays but is a problem with the way the MP controls rf/if gain.  As
I've noticed several times on my MP, the receiver can be deaf and then
slowly the gain comes back up over the course of several seconds while
I'm just listening without keying the rig or touching anything."
==========
When my MP had the intermittent "deaf receiver" problem, it never had the
gain slowy return to normal.  The gain would never come back until I
re-keyed the rig momentarily or until I toggled the A/B or RX front panel
antenna selector pushbutton.  It was always quite evident that the
problem was an  intermittent relay contact connection in one of the
switching relays in the receive signal path.

The problem occurred less and less frequently as time went on.  I haven't
experienced the problem since the radio was about two years old (bought
new in 1998).  I assume that, after hundreds of tx/rx cycles, the
offending relay contacts eventually burnished themselves clean and
therefore the problem went away.

73, de Earl, K6SE
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