[ICOM] John G. <af5cc at fidmail.com>: Receive level dropping-rig or antenna system issues?

[SK]

John.

When the receive level is low try tapping on the case of the radio. If 
it's a connection or relay problem in the radio it may pop right back up 
to normal. If it's repeatable each time the receive level drops then you 
can be pretty sure that there is a relay or connection problem in the 
radio, not an antenna problem.

If it's in the radio, try unplugging then plugging back in any boards or 
cables/plugs or anything else that's easy to disconnect and reconnect in 
it. That can knock corrosion off of connector surfaces sometimes and 
re-establish the connection. Of course, that won't help if it's relay 
contacts.

If you can get to the relay contacts directly they can be cleaned by 
pulling a piece of paper through the contacts a few times while holding 
the contacts  closed.

Hope this helps.

73   Stan K8LL
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On 3/25/2013 12:00 PM, icom-request at mailman.qth.net wrote:
> Here is a message I posted a few months ago about the receive level
> >>dropping off at times in my Icom 706 original:
> >>
> >>"I have noticed for the past few months that the receive seems to drop
> >>at times on certain bands-it started on 12m and now occurs on 15m as
> >>well. If you click the key or mic to quickly put it into transmit the
> >>receive comes back. To me this sounds like a dirty relay or one that is
> >>going bad"