[ICOM] Running mobile with some CW problems

[Jim Vaughan, K4TXJ]

Hi John,

I have run an Icom IC-706MKIIG since March 2006 with a Tarheel screwdriver 
antenna.  I use both SSB and CW
at full power (100 watts) with no problem.  I"m sure your problem is with 
the connection with the cigarette lighter.

Connect the power cord to the battery and I'm sure your problem will go 
away.  I would also change the plug
on the keyer paddles cable to the 1/4" plug and eleminate the possibility of 
future problems.

Make sure you have a good ground for the radio and the base of the antenna.

Good luck and happy mobiling.

73,

Jim, K4TXJ
Louisville, Ky.





----- Original Message ----- 
From: "John Geiger" <af5cc at fidmail.com>
To: <ic706 at yahoogroups.com>; "ICOM Reflector" <icom at mailman.qth.net>; 
<IC-706MKIIG at yahoogroups.com>
Sent: Tuesday, August 06, 2013 5:36 PM
Subject: [ICOM] Running mobile with some CW problems


>I was running my Icom 706MKII mobile over the past few days and made quite 
>a few QSOs on the County Hunters Net.  However, 2 interesting things showed 
>up, that I am looking for solutions for.  I had my 706 plugged into the 
>cigarette lighter on a 2007 Chrysler Town and Country Minivan. The cables 
>were 10 or 12 guage so there shouldn't have been much voltage drop. The 
>antenna was a MFJ mini hamstick (3 feet tall on a 5 inch mag mount) for 20 
>meters.  I had the rig set to 40 watts due to the current limitations of 
>the cigarette lighter.
>
> The first thing I noticed was that I was getting RF bites off of the set 
> up MFJ mini travel paddles I was using.  Also off of the rig case at 
> times.  This is intersting because it didn't happen last month when I was 
> using a Yaesu FT857 with the same setup.  The only difference was that the 
> paddles have a 1/8" plug on the end, so they plugged directly into the 
> FT857's key jack, whereas I had to use a 1/8' to 1/4" adaptor for the key 
> jack on the Icom 706MKII.  Don't know if the adaptor could cause something 
> like that.
>
> Secondly, a couple of stations told me I had a chirp on my signal, like 
> the battery was low.  I didn't get this report when the FT857 either, 
> running at around the same power, nor with an Icom 706 original I used to 
> have. Could the 706mKII be more sensitive to lower voltages?
>
> I wonder if others have experienced these problems with their 7-6s or have 
> an idea as to what could be going on with my setup.
>
> 73 John AF5CC
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