[ICOM] 706MkIIG VHF Xmit Problem.

[Gary V. Smith]

Thought I'd follow up on the "resolution" to the below problem that I 
posted last week.  I hooked the radio to a dummy load and got the 
same problem.  While on the dummy load I hooked the radio to a 
different power supply (30 amps).  Still couldn't transmit on 2m 
without momentarily shutting of the radio.  Temporarily defeated I 
hooked the radio back up to the original power supply.  For chuckles 
I keyed the mike.  Lo and behold, the radio worked just fine on 
2m.  Why?  I don't know.  I'm not ignoring my good fortune..hi..hi.

Thanks to those that offered suggestions.

73,
Gary - W6GVS



I've had a 706MkIIG in my car for a couple of years.  Since I don't 
travel in my work anymore it was overkill so this last weekend I took 
it out.  I set it up in the shack.  It transmits fine on HF and UHF, 
but now won't transmit on 2 meters.  Whenever I key the mike the 
radio shuts off momentarily.  Kind of like it does whenever you have 
high SWR on HF.  I've tried a couple of different 2m antennas with 
the same result.  The odd thing is that it will transmit on UHF with 
the 2m-only antenna without shutting off.  BTW, I had a tri-band 
antenna on the car and the radio performed fine on 2m the last time I 
used it there.  I hope that it isn't a worse case scenario in that 
the VHF final is bad, but when I look at the block diagram the UHF 
side apparently uses the same final.  Anybody got any solutions for this?

Thanks.

73,
Gary - W6GVS
Dowagiac, MI