Joe,
I do have one of those tuners, but only use it when mobile or portable. You
will find in the manual there are lengths of wire 'not' recommended for the
tuner, normally 1/2 wavelength multiples of desired frequency. Also, do an
Internet search for random wire antennas, one such link here:
http://www.hamuniverse.com/randomwireantennalengths.html
A good friend of mine also had similar issues with his remote tuner and
found changing wire lengths helped. I also sort of remember seeing
somewhere grounding is important, length of ground is important (keep it
short) and your might even have to use a current BALUM on the coaxial feed
point to the tuner.
Good luck,
Eric - VE3GSI
----- Original Message -----
From: "jsloss" Sent: Monday, November 21, 2011 6:04 PM
Subject: [TowerTalk] Icom AH-4 Tuner
>A friend of mine is using an AH-4 mounted on roof top mast. End fed
>antenna length is 84' and the ground wire from the AH-4 to a ground rod at
>the base of the mast is 32'. The AH-4 seems to tune OK on all bands except
>those frequencies below 3875 and 28500.
>
> Would appreciate comments from those who are familiar with the AH-4.
>
> Thanks,
>
> Joe k7mks
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