Can you identify this BBC amplifier?

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Can you identify this BBC amplifier?

Post by G8GQS » Tue Oct 27, 2015 11:14 pm

I was given this vintage BBC microphone ampifier and I don't recognize it and I wondered if anyone did? and possibly have some information about it.

It is slightly smaller than the OBA9 and has studs top and bottom to form a stacking system. I have dated it to 1957 and it does not have a BBC coded equipment number.
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Brian Summers
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Re: Can you identify this BBC amplifier?

Post by gm1mfn » Wed Oct 28, 2015 3:13 pm

Have you tried contacting Roger Beckwith?
Doppler effect: The tendency of stupid ideas to seem smarter when they come at you rapidly.

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