[Icom] Strange IC-765 40 meter problem

Sun, 28 Jul 2002 09:03:59 -0400

Start by trying it on a dummy load.  This will eliminate the coax and
beam.

Ed

On Sun, 28 Jul 2002 06:43:39 -0400 Joe Stepansky <[email protected]>
writes:
> For brief background, I began noticing something interesting with my 
> 
> IC-765's performance on 40 meters earlier this year.  The receive 
> level 
> would occasionally reduce considerably and suddenly (i.e. one second 
> the 
> band sounds normal, the next it's severely attenuated).  After 
> hitting the 
> keyer, even briefly, everything returned to normal.  I noticed this 
> 
> happened more in windy conditions than not, so assumed it was my 40 
> meter 
> beam.  Also noticed that sometimes the SWR would go up to 3:1, then 
> back to 
> a more normal 1.4:1.
> 
> Decided to replace the balun and coax on the beam.  Also checked 
> everything 
> else out while we were up there.  All looked fine.  Came back down, 
> fired 
> things up, had a 1.2:1 SWR.  Stations sounded fine.  Then the 
> receive 
> problem kicked in again, and the SWR is now > 3:1!!
> 
> Is it possible this is something with the 765??  Has anyone seen or 
> heard 
> of this happening?  It's so bad that even the antenna tuner won't 
> knock the 
> SWR down.  I don't have another rig to test it with, so now I'm 
> stumped.  But we've replaced virtually everything that can be 
> replaced on 
> the 40 meter beam, so I'm now out of ideas.
> 
> Any suggestions will be more than welcome.
> 
> 73, Joe KQ3F
> 
> ----
> Your Moderator: Dick Flanagan W6OLD, [email protected]
> Icom FAQ: http://www.qsl.net/icom/
> 

________________________________________________________________
GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today!  For your FREE software, visit:
http://dl.www.juno.com/get/web/.