[Top] [All Lists]

Re: [Amps] Alpha 86

Subject: Re: [Amps] Alpha 86
From: Vic Rosenthal <>
Date: Mon, 06 Jun 2005 15:33:02 -0700
List-post: <>
Dick Green WC1M wrote:
> FWIW, a member of our contest club had problems with massive IMD
> interference to other radios caused by bad PIN diodes in a used Alpha 86 he
> bought. Being a thrifty fellow, and not needing QSK for multi-multi
> contesting, he simply bypassed the PIN diodes with a standard relay-based
> T/R switching system (not even a vacuum relay.) Aside from the PIN diode
> problem, my understanding is that the RF portion of the amp is excellent and
> a real workhorse.

I had an 86 for several years (just sold it).  There was NEVER any 
problem with the PIN diodes, no blown fuses, and I always operate QSK 
CW.  Same for the guy that had it before me.  I understand that early 
models had a problematic board that was later updated.  So later ones or 
ones in which the board was replaced did not have this trouble.

Vic, K2VCO
Fresno, CA
Amps mailing list

<Prev in Thread] Current Thread [Next in Thread>