Chinese/NVA Type 71B Backpack Radio
Coverage: 1.9 to 7.2 MHz
Mode: Amplitude Modulation
Power: D-71 dry battery
Size: 6 1/2" X 12" X 15"
Weight: 45 pounds
The 71B back pack radio used the old tube type technology which had a high power consumption as compared to solid state technology of the period. Thanks for the photographs and specifications provided by LTC William Howard at http://www.wlhoward.com, Largo, Florida.
Internal view of the 71B showing tubes in metal cans