[Amps] Henry 3002 help
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
> 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
> Offlist replies are welcome also.
> Don N8ECH
> Amps mailing list
> Amps at contesting.com
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 10.0.1430 / Virus Database: 2639/5570 - Release Date: 01/31/13
More information about the Amps