Amplifier/Receiver Manufacturer:
AMECO
Model:
CN-50, CN-144, CN-220 receiver converter - all three models share the same tubes but different crystals for band input and band outputs. 
Description:
Primo tube set (see tube list below)
Amp Bias Type:
not applicable
Tube Quantity in ( )
Rectifier/regulator Tubes:
none
Osc/Driver Tubes:
6CW4/6DS4 (2), 6J6 (1)
Final Output:
none
Total Tubes in this set:
3