[ICOM] AT-130 marine antenna tuners

[Jerry Flanders]

I previously used an AH-4. My 120 works the same - tunes 
automatically, turns on/off properly. I found a mod somewhere for the 
120, but I found mine needed no mod to work exactly as an AH-4. I 
also saw that mine did not look exactly the same as the circuit board 
photos for the 120 in the mod article - maybe mine was a later 
version. If so, then the later 130 would likely have those version 
changes and would probably work properly like mine.

Perhaps your mod info is the mod I found when I was first researching mine.

My 120 is "beefier" than the AH-4. I think the inductors are larger, 
IIRC. Also wider tuning range (lower freqs with same radiator).

Jerry W4UK

At 17:02 12/21/2005, you wrote:
>Jerry,
>
>Does your At-120 turn on and off with the 706MKIIG's tuner button? I 
>used an AT-120 and it would turn on with the tuner button but would 
>not turn off. I used to tune the 706MKII up to 6 meters and the 
>tuner would turn off. Then we got a modification form the factory 
>and once that was done it worked like the AH-2 or 3 would. It always 
>tuned fine just turning it off before the mod was not possible for me anyway.
>
>I am not sure about the AT-130 how it will work with the ham rigs. 
>Apparently tere was some differences internally in the control 
>section between the AH-2 and AT-120 as shown above with my issue.
>
>Gary K8IZ.
>
>-------------- Original message --------------
>From: Jerry Flanders <jeflanders at comcast.net>
>
> > I have an AT-120 marine tuner that works FB with my 706mk2g. I can
> > even tune it down to 3.5 MHz with about 14-15 ft of doglegged wire as
> > the antenna. Also seems to tune ok on 6 meters, but I haven't
> > actually used it there.
> >
> > Apparently ICOM uses the same control protocol on all AT products.
> >
> > Jerry W4UK
> >
> > At 14:49 12/21/2005, you wrote:
> > >Hi all,
> > >
> > >Eventually I managed to aquire two (two!) Icom AT-130 marine tuners some
> > >time ago. Both are brand new, in factory sealed bags. I have 
> never had any
> > >necessity to touch them and they were just collecting dust. 
> However having
> > >moved to a new house I am faced a serious problem with antennas' 
> location.
> > >The best I can imagine so far is a random wire from the attic 
> top across my
> > >backyard. Some counterposes could be placed inside the attic and
> > >these wires will look like a sort of Inv L. It looks like I am
> > >forced to seriously consider matching the wire monster somehow.
> > >Maybe it's a good chance for the tuners.
> > >
> > >Does anybody have any experience/knowledge in usage of the marine tuners
> > >with amateur equipment? Any hint or so?
> > >
> > >Or maybe somebody needs such a tuner? I am certainly ready for a trade.
> > >
> > >73 and Merry Christmas,
> > >
> > >Vladimir VE3IAE
> >