[Amps] Henry 3002 help

Carl km1h at jeremy.mv.com
Thu Jan 31 10:32:13 EST 2013

If the amp Tunes and Loads without reaching the control limits the only 
difference will be in the tank Q which may impact efficiency a bit.

The only way to be sure is to ask around on various forums for someone to 
take measurements of the plate line.
The input circuit is adjustable if needed.


----- Original Message ----- 
From: "Donald Fox" <taurusshoguy at yahoo.com>
To: <amps at contesting.com>
Sent: Wednesday, January 30, 2013 8:48 PM
Subject: [Amps] Henry 3002 help

> Gentlemen:
> I cannot recall if I had sought advice regarding this very nice high power 
> 8877 VHF console, so here goes.
> I picked it up some time ago as a project because the price and condition 
> were excellent. Interestingly, it was set up by Henry as a paging 
> amplifier on 151.995.
> My research has indicated that the output section appears to be the same 
> as the 144 mhz version. I have seen 900 watts out with 35 watts input on 
> 146 mhz. Although the input SWR seems to be good also, I would like to 
> verify proper input/output resonsance with an SWR analyzer fed into the RF 
> deck with out voltage applied of course.
> Since it was set up as a paging amp outside of the 2 meter band, there was 
> no low pass output filter to be had with it. I have the schematic for that 
> along with pics when the time comes.
> Any advice to guide me on insuring proper input/output resonance would be 
> appreciated.
> Offlist replies are welcome also.
>                                Don   N8ECH
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