[ICOM] ICOM 706 MK2G

[Tom]

Here are my thoughts, Bob

You say NO problem with a dummy load AT ALL?
Then the radio is OK.

You didn't tell us about the antenna or the auto
tuner.
Maybe there is a bad relay in the auto tuner, etc.
Is the antenna such that you can operate without the
autotuner on some particular frequency? If so, get the
autotuner out of the picture and give it a run.

With the SWR displayed on the 706 - do you see the SWR
jump up when the power drop occurs? If so, the
autotuner is suspect.

Tell us more! :)

73,
Tom, W3TMC

PS - If the tuner is the AH-4, you gots to have a
ground!

--- WORKSNTV at aol.com wrote:

> Maybe someone has some thoughts on the following:
> 
> I have an  ICOM  706 MK2G for a number of
> years---About a year ago the 
> following  problem developed:
> 
> When in SSB on every band---all of the sudden the 
> transmit power almost 
> falls to zero---this is confirmed by the amount of
> current  being down on the 
> Astron supply.(I did change supplies--same  problem)
> Un key the mike and things are back to normal for 
> awhile---then the problem 
> reappears...It's getting to the point now that when
> I  key and mike and 
> speak--xmit power is down to a few watts---play
> around and  recheck power settings 
> etc---it comes back.
> 
> Since then I  moved---different antenna and even
> with low SWR problem 
> reappears  ;-(
> 
> HOWEVER: when I xmit into a dummy load---NO
> problem?????
> 
> I do  not have the radio,external automatic tuner,
> going to an earth 
> ground---BUT I  operated the radio for more than a
> year without an earth ground and it 
> worked  perfectly. I have tried running the rig
> through a manual tuner---same 
>  problem.
> 
> Any thoughts?  If anyone believes the rig needs 
> repair--please recommend 
> someone who is good with reasonable prices---rig is 
> several years out of 
> warranty ;-(
> 
> 
> 
> 73'
> 
> Bob
> WB3DYE 
> ----
> Your Moderator: Dick Flanagan K7VC,
> icom-owner at mailman.qth.net
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>