[Boatanchors] Comdel Speech Processor CPS 11

Ken Kaplan krkaplan at cox.net
Tue Oct 30 20:28:15 EDT 2012


That looks like a house marking. They a TO-92 case? I bet a 2N3904 would 
do just fine. They are so easy to find and cheap.

Ken

On 10/30/2012 11:36 AM, David C. Hallam wrote:
>    I have to replace a couple of NPN transistors in a Comdel speech
> processor operating at 9VDC.  They are marked MST 119 0056 and I can't
> find any data on them.  Since the circuit is LF, no more than about
> 20KHz, I am assuming about any small signal NPN transistor will work.
> Is that correct?
>
> David
> KW4DH


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