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Re: [Amps] Schematic needed for Henry 8K Ultra amp

To: Gary Schafer <>
Subject: Re: [Amps] Schematic needed for Henry 8K Ultra amp
From: Bob Darlington <>
Date: Thu, 12 May 2022 12:43:43 -0600
List-post: <> in general.

And to everyone else, if you have a manual for a Henry amp that I'm
missing, please send me a scan or point me toward one!       NE7X dropped
this page years ago and I've done my best to bring it back to life and
maintain it for the last several years, filling in what I could that was

-Bob (N3XKB)

On Thu, Apr 28, 2022 at 8:49 PM Gary Schafer <>

> I am looking for more info on the interconnection of the Henry 8k ultra amp
> and the remote control box. I have the manual that comes with the amp but
> it
> has parts that are left out (very poor).
> They don't show where the cathode connects to the bias diode and metering.
> There are fragments here and there with no connections. They show the
> metering but not how to get from there to the cathode.
> Also trying to figure out how to check the calibration of the plate current
> meter and the filament voltage.
> Thanks for any help.
> 73
> Gary  K4FMX
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