[ICOM] IC-756PROIII No Transmit

[Walt - WB2VSJ]

Same thing happened to me many years ago in Upstate NY in the middle of
winter.  My father came and got me out of bed late one night - seems my
radio (HW-101) at the time was "Clicking".

Turns out my disconnected antenna coax was close enough to the grounded
chassis of the HW-101 to make a mini-spark gap from the tip of the PL-259.
Weather outside?  0 deg weather and a dry strong wind which was putting
quite a static charge on my dipole.

Ever see the movie "The Hunt for Red October"?  They had to bring the
helicopter to the same potential (i.e. ground) as the sub before they could
have Alec Baldwin repel down.  Of course that's Hollywood - Maybe some of
you Ex-Navy guys can confirm if that much static is built up by the
helicopter rotors.

Fortunately my Pro II and IC-706 haven't had any issues yet here in NC.
(Knock on wood) 

Static is more than QRN  :)

Walt - WB2VSJ



-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Dick Flanagan
Sent: Thursday, July 16, 2009 7:19 PM
To: ICOM Reflector
Subject: Re: [ICOM] IC-756PROIII No Transmit

Gary's advice is excellent.  I live in a very dry climate and in the 
summer I can draw a hear the snapping of an arc from the center 
conductor to the ring of a PL-259 connector connected to an unused 
vertical antenna.  Use some means of continuously draining the ESD 
voltage from your coax.  ICE makes a lightning suppressor that does 
this or you can configure an RF choke or even a simple non-inductive 
resistor from the center conductor to ground to drain off the charge.

Dick
--
Dick Flanagan K7VC
dick at k7vc.com


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