need help with ailing sb-101

[Gary Schafer]

Mike

You may have a tube that has a partial grid to cathode short. Try changing tubes that get
avc voltage one at a time. May cure it. If not look for a leaky cap in the avc circuit or
a grid coupling cap in receiver rf stages.

73
Gary K4FMX


Mike Hammer wrote:

> Im in the process of resurrecting an old
> SB-101. Ive got most of the problems worked
> out but one remaining problem has me stumped.
>
> This unit has VERY slow receiver recovery
> from transmit. After a lengthy transmission
> it takes a couple minutes to recover fully.
>
> Ive made the usual changes. Ive replaced
> diodes D101, D902, D903, and D905. I replaced
> them with 1n4005s.
>
> This didnt seem to help.
>
> I also have a Hw-101 with the exact same problem
> and I know of another person with a HW-101 with
> the same problem. Is this a common fault and
> is there a fix anyone knows of?
>
> Thanks...
>
> TTYL!
>
> Mike Hammer
> mhammer at misslink.net
>
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