If anyone has the military service manual that Bob is referring to, I would
also like to get a copy of same. OUr radio club has inherited this amp and
it's well worn linkage is going to need some alignment in the not too
distant future !
Dave, K2DP, St. Louis
----- Original Message -----
From: "Bob Maser" <firstname.lastname@example.org>
To: "AMPS" <email@example.com>
Sent: Tuesday, December 27, 2005 12:21 AM
Subject: [Amps] Henry 4K Ultra
>I am still wrestling with the alignment of my 4KU. I am told that the
> that were sold to the military were supplied with a "Service Manual" that
> had much more info regarding how to set up the gang tuned circuitry that
> adjusted as the Tune control is turned. The regular Operating and
> Maintenance manual that accompanied the civilian amps did not cover this.
> would really like to hear from someone that has this info. I suspect that
> Henry did not use 300 ohms as the intermediate impedance between the Pi
> the L of the tank circuit. The reason I think this is because when I set
> the L inductor for a specific band, it does not track properly as the
> frequency is changed.
> Any help would be greatly appreciated,
> Bob W6TR
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