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Re: [Amps] SB-220

Subject: Re: [Amps] SB-220
From: "Jeff Carter" <>
Date: Thu, 27 Mar 2008 21:10:56 -0400
List-post: <">>
Hi Rick,

Could you give me the name of the article?  My QST collection only
goes back to 1999, but ARRL may have archived the article or I may be
able to find it elsewhere if I could get the name.  I will read it and
everything else on the subject if I can find it.

What I meant by self-oscillation is what they're calling VHF
Parasitics on several different sites.  There are other sites that say
if these parasitics were to occur, they wouldn't necessarily cause the
symptoms and failures blamed on them, and as an amplifier n00b I find
myself a little confused by all the conflicting information.

I thought maybe since this group had "been there-done that" that it
might be the best place to get some clarification, and I appreciate
anything you could tell me from your own experience.



---- Original message ----
>Date: Fri, 28 Mar 2008 00:14:39 +0000
>From: Rick Stealey <>
>Subject: Re: [Amps] SB-220
>To: <>
??????????????    The SB-220 is a stable, well behaved amplifier.
Self oscillation?
Read QST Sept. 1994 page 71 before you do anything.  Oh, there are
things you might want to do,
but be sure you read that section as a part of your knowledge base.

Rick  K2XT
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