Amplifier/Receiver Manufacturer:
HEATHKIT
Model:
DX-40 Transmitter
Description:
Complete Primo tube set with all tubes
Amp Bias Type:
none

Tube Quantity in ( )
Rectifier/Regulator Tubes:
5U4GB(1) - USA made
Preamp/Driver Tubes:
6CL6(2), 12AX7(1), 6DE6(1) 
Power Amp/Driver Tubes (matched):
6146(1) - USA made
Total Tubes in this set:
6