HF Receiver MH-445

HF radio receiver for AM, SSB or CW, in the frequency range of 1.5 to 30.1 MHz.
Five sub bands: 1.5 to 3.5 MHz, 3.4 to 7.6 MHz. 7.5 to 15.1 MHz, 15.0 to 22.6 MHz, 22.5 to 30.1 MHz.
Selectable bandwidth of 300, 1,000, 3,000 or 6,000 Hz.
Used by the West Germany armed forces and the Swiss military since early 1960’s until the 1980’s, designated E 311.
Used by the IDF during the Six Day War (1967).
Triple conversion, with IF stages in the 1.3 to 1.4 MHz. 370 kHz and 30 kHz frequencies.
Linear analog scale with 100 Hz resolution. A coarse-tuning knob selects the 100 kHz frequency mark on the band dial, indicator lamp indicates that the receiver is locked on the 100 kHz position, and the fine-tuning knob tunes to the 10 kHz and 1 kHz digits of the desired frequency.
Weight: 26 Kg.
Powered by 220 Volts AC.
Manufactured by Siemens, West Germany. Model Rel 445 E 311b.
Vacuum tube technology, with 16 tubes and quartz oven for improved frequency stability (± 20 Hz over 24 hours).