[1000mp] Sticky relay? - I suggest not

[Gary Ferdinand W2CS]

> Barry, N1EU wrote:
>
> "There was a thread on this subject a while back, and it was termed the
> "deaf  receive" problem.  Occasionally in contests while running
> (cq'ing), the receiver seems deaf after ending a xmsn.  The receiver
> doesn't go totally deaf, just loses 20+dB of gain.  Often sending a dit
> will fix the problem.  Without a lot of hard data as basis, I'd like to
> suggest that this is a receiver gain control issue and not a relay
> problem."
> ==========
> I had the same problem with my MP.  A dit would correct it on CW and a
> tap of the PTT switch would correct it on SSB.  Hitting the front panel
> MOX button would also cure it.
>
> However mine was not a receiver gain problem.  It also would fix itself
> if I tapped the front panel ANT A/B pushbutton twice.  This did not
> change the radio's receive/transmit state and suggested that the problem
> was a dirty antenna relay contact.
>
> Over the course of time, this problem occurred less frequently.  I have
> not had it recur for the last two years or so.  It appears that the dirty
> relay contacts (if that's what it was) gradually cleaned themselves after
> thousands of operations.
>
> 73, de Earl, K6SE


My experience parallels that of Earl's.   My MP suffers from the same
intermittent malady.   When I bring it over to be used in a multi/multi
operation, where it is in constant use for 48 hours straight, the problem
disappears for quite some time.  I've always assumed the contacts were dirty
or corroded and activity cleaned them up.

73,

Gary W2CS
Apex, NC