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[AMPS] Thanks for SB-1000 help!

To: <amps@contesting.com>
Subject: [AMPS] Thanks for SB-1000 help!
From: rakefet@rakefet.com (Vic Rosenthal)
Date: Mon, 01 Jun 1998 07:52:20 -0700
I've finally gotten all of the bugs out of my SB-1000 and made various 
improvements. 
I added vacuum-relay QSK and replaced the parasitic supressor (thanks, Rich), 
put in
a soft-start circuit, added a glitch resistor (thanks, Carl), replaced the plate
choke with an Ameritron AL80B part (thanks to several who suggested this).  I
replaced the arc-damaged band switch contacts for the 160-meter padder and 
added a
corona washer (thanks, Tom) to prevent a recurrence of this.

The guy who originally built this amp got bored or something when he got to the 
plate
circuit, because he did a lousy job (it's funny that the rest of the amp seems 
to be
built carefully).  I completely redid it, and while I was at it replaced the 
leads
from the switch to the coil with 1/4" strap.  I made sure all grounds were good.

When I got done, I found that my input SWR problems on 17 meters had gone away! 
 I
now get full output on all bands (800 watts CW, maybe a little less on 10 
meters),
including 18 and 24 mHz.  I haven't blown any fuses or heard any arcs.  

Thanks again to anyone who I didn't mention who answered my numerous posts 
asking for
help.

Vic, K2VCO

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