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Zenith prescribed the following for the transistors in your radios:
Royal 1000:
121-44 2N370
121-45 2N139
121-46 2N109
121-47 2N270
121-48 2N371
121-49 2N372
Royal 3000:
121-44 2N370
121-228 2N1742
121-46 2N109
121-47 2N270
121-48 2N371
121-49 2N372
121-64 2N405
121-230 2N1745
121-137 2N1180
121-138 2N1180
121-139 2N1180
Zenith makes a point - "Due to wide characteristics within any given EIA or manufacturer's number, performance may not be identical to Genuine Zenith Transistors."
Source is Zenith Transistor spec guide 902-656, dtd Feb 1970.
Hope this helps,
__________________
Brian
USN RET 22YRS (Avionics/Cal)
CET-Consumer Repair and Avionics ('88)
"Capacitor Cosmetologist since '79"
When fuses go to work, they quit!
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