Antique Radio Collection
Part No. 1
2003.01.11 upload
Super Heterodyne MT-Tube AM Radio
National E-330 in 1962
The model E-330 is a super heterodyne radio using five kinds of MT-tube (transformerless) which was made in 1962. It is still working for 40 years.

E-330 Front View
E-330 Rear View

Model name National Radio Model E-330
Manufacturer Matsushita Electric
Frequency band MW: 535kc - 1605kc
SW: 3.75Mc - 12Mc@
IF 455kc
Tube used 12BE6, 12BA6, 12AV6, 30A5, 35W4
Pilot lamp 6.3V 0.15A
Sensitivity MW: 50uV 50mW
SW: 50uV 50mW
Audio output 1.2W@Max. 1.5W
Power Input 50-60c/s 100V
Power consumption 23VA
Speaker 2 x 10cm Permanent dynamic speaker

Inside View
Circuit Diagram