DO NOT use those Alpha Amps outlined at the bottom of this page on 24MHZ.
I have seen first hand the damage it can do and have repaired damage from
just that situation.
73s de John W4DJ
>From: "Kenneth D. Grimm, K4XL" <kgrimm@adelphia.net>
>To: "R.Measures" <r@somis.org>
>CC: AMPS <amps@contesting.com>, Michael Tope <W4EF@dellroy.com>
>Subject: Re: [Amps] Suggestions for new Alpha Owner?
>Date: Tue, 27 Sep 2005 13:19:07 -0400
>
>R.Measures wrote:
>
> >On Sep 27, 2005, at 7:04 AM, Michael Tope wrote:
> >
> >
> >
> >><snip>I did read where 24 MHz is not recommended because
> >>of a HV plate choke resonance issue at 25 MHz.
> >>
> >>
> >
> >The lowest resonance in the 50uH HV RFC is c. 43MHz.
> >
> >
>Are you saying that the plate choke isn't going to fail if the amp is
>loaded up on 24 MHz? Shouldn't one heed the warning given on the Alpha
>Radio Products web site which says: "The ALPHA PA-77, 77Dx/Sx, 78, 76,
>76A, 374 and 374A should not be used on 12m.
><http://www.alpharadioproducts.com/html/warc_78_12m.htm> The plate choke
>will overheat and burn on that band."
>
>--
>
>Ken K4XL
>k4xl@arrl.net
>
>*** BoatAnchor Manual Archive ***
>On the web at http://bama.sbc.edu and http://bama.edebris.com
>FTP site info: bama.sbc.edu login: anonymous p/w: youremailadr
>
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