[Heathkit] Re: SB-200 help, was: zero bias

Tom Farland Tom Farland" <[email protected]
Sat, 17 Aug 2002 12:20:30 -0500


I've got a SB-200 reputed to have the "CQ idle current" mod. (see message
below).  How does one check for this mod?  In fact, I have about four
SB-200's that I'd like to sell one of these days, but would like to be able
to tell the purchaser exactly what he's getting -- What should I look for
under the hood?

I know I sound like a dummy, and may well be. I picked these amps up on days
when I was manic, thinking they'd be easy and valuable to sell.

Tom


----- Original Message -----
From: "matt" <[email protected]>
To: <[email protected]>
Sent: Wednesday, August 14, 2002 3:51 PM
Subject: [Heathkit] zero bias


> i assume you are not the original owner of the amp...  i believe you
> have a nifty little mod called the zero bias mod.....     your finals get
> zero palte current unti it sees a carrier...  extends the life of the
> 3-500's   73  paul w8jn