[R-390] SP8675

[Alex Kosman]

Hello Bryce,

yes, I know it is NPN and made in the 60's.

the man form that radio museum in Austarlia was very kind and already sent
me more schematics, but he knew nothing about  that transistor.
The receiver works very good but I just collect more info about it.

thanks again,

alex
----- Original Message ----- 
From: "Bryce Ringwood" <BRingwoo@csir.co.za>
To: <alexx@techunix.technion.ac.il>
Sent: Monday, February 16, 2004 3:03 PM
Subject: Re: [R-390] SP8675


> OK Now I place it.  Its in the 90-300mHz tuning head. Looks as if it
> could be a NPN transistor, part of the mixer circuit. The little arrow
> pointing to the base looks like a PNP, but tracing the wiring, it has
> +12V on the collector and -12V on the emitter. So, its probably a
> Germanium NPN Transistor that got fed up of 24Volts across it.
>
> If that's the case, I may have a substitute, but I would have to look.
> It doesn't look that critical - try a 2N5109. (I don't think I have
> anything closer).
>
> This is what I'm looking at:
>
> http://users.froggy.com.au/vk2zio/museum/k-index.htm/sr209.htm/sr209.gif
>
>
> - Bryce
> (This list isn't too good with solid-state!)
>
>
>
> -- 
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