[Milsurplus] PRC-47 power oscillator transistors

[Jim Haynes]

I just did a google on PRC-47 inverter transistors

The first two items that came up seemed like they might be helpful.
Dennis Starks' "So Now You Have a PRC-47" at www.prc68.com/I/NYH_PRC47.htm
(or maybe that's a lower case l instead of an upper case I in the URL)

www.prc68.com/I/PRC47.shtml
    says NTE121 is not correct, NTE179 is correct, says NTE180 is silicon
    instead of germanium but works perfectly

    and someone else says ECG 121 MP (a matched pair) are the only thing
    that will work, as will 2N1544.

Seems like enough there to get you started.