[Top] [All Lists]

[AMPS] SB-1000 mods?

To: <>
Subject: [AMPS] SB-1000 mods?
From: (2)
Date: Fri, 7 Sep 2001 16:07:47 -0700
>I'm presently repairing a Heath SB-1000. Are there any modifications
>that would be worthwhile while the cover is off... besides a step-start
>and a glitch resistor, that is?

//   The SB-1000 is virtually identical to the AL-80, and thus so are the 
needed modifications. 
1.  glitch diodes across meter movements.
2.   lower Rp parasitic suppressors. [photos of parasitic-arced AL-80 
bandswitches on my Web site. 
3.  high-speed switching is needed to avoid hotswitching with newer 
4.  cathode RF-NFB resistance needed if driven by 100w.
/note -- the information in the manual about more than 500mA being ok is 
not supported by any 3-500Z manufacturer's rating.  The max. rating is 

good luck,  Ian

-  R. L. Measures, 805.386.3734,AG6K,  

FAQ on WWW:     
Administrative requests:

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