exray wrote:
Hi,
I'm looking for the elusive audio driver transistor in the KLH 21-
series radios. It is house marked as KLH5351. Early 70s.

Any help would be appreciated. The normal sources are turning up dry.

TIA,
Bill


Bill,

Your radio is a KLH-21-II

I worked on 2 of these last year, one of mine and a friends. I've just
opened mine, and its NOT the one that I replaced the driver transistor
on. However, it is a Motorola PNP bi-polar transistor in a TO-92
package. No reason not to use another Motorola device, like the 2N5400:

PNP
To-92
120V(CEO)
600 ma
625mW
40-180 beta
same pin out
really inexpensive and readily available.


If you feel really uncomfortable about this substitute, I can ask my
friend to take his apart and see what we used it it.

Regards,
Tim Schwartz
Bristol Electronics