[ICOM] Re: IC-746 w/ No output/high SWR on 6M

[gfiber at comcast.net]

Mac,

Don't overlook the coax cable feeding the antenna. I once had some coax that the shield had corroded to black and it was opening under transmit. I would be chatting along on 10 meters and all of a sudden the rig would fold back in output power and the reverse power would go to almost full output power. The antenna was a Mosley 310C.

Took me a bit to figure it out as the Drake W-4 I had always shown a good match.

Gary K8IZ

 -------------- Original message ----------------------
From: "D C (Mac) Macdonald" <k2gkk at juno.com>
> Right now, it may be a  REAL  SWR problem with the
> antenna.  It looks good on an MFJ Antenna Analyzer,
> but wouldn't work with my IC-703 either.
> 
> Right now, I'm waiting for Oklahoma winds to subside
> so it will be safe for a younger ham (I'm too old
> to be climbing around on a steep roof) to take the
> Ringo down so we can check things out.
> 
> I also have Drake WV-4, Bird 43, and Heath VHF
> wattmeters that I will use for further checking.
> 
> I'll post to the list when I find out something.
> Meanwhile, thanks to all who have offered
> suggestions.  I don't have a low-pass filter
> in the line and no amp, either; going straight
> from IC-746 to antenna.
> 
> Maybe my brain is going soft after 50 years plus
> of RF exposure???
> 
> 73  ---  Mac, K2GKK/5
> 
> 
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/