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Last modified 2023-09-20

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Siemens 745 E311a

A picture of Siemens 745 E311a

SPECIFICATIONS

GENERAL
Type:HF receiver
Frequency range: 1.5-30.1 MHz in five ranges
1:   1.5-3.4 MHz
2:   3.4-7.5 MHz
3:   7.5-15 MHz
4:   15-22.5 MHz
5:   22.5-30.1 MHz
Tuning steps:Analog / continuous
Frequency stability:±20 Hz over 24 hours (Super stable)
Mode:AM / SSB / CW
Channels / memory management:
Power supply:Mains: 110 / 125 / 220 VAC
Current drain / power consumption:70 W
Antenna impedance / connector:60 ohm / SO-239
Dimensions (W*H*D):475*295*390 mm (18.7*11.61*15.35")
Weight:26 Kg (57.32 lb)
Other features:IF output jack. 100 KHz calibrator.




RECEIVER SECTION
Receiver system: Triple conversion superheterodyne
1st IF: 1.4 MHz
2nd IF: 370 KHz
3rd IF: 30 KHz
Sensitivity: CW: 0.3 uV (No reference)
Selectivity: Selectable bandwidths (-6 dB)
300 Hz, 1, 3 and 6 KHz
Image rejection:80 dB
AF output power / speaker:1 W at ?% distortion / 5 ohm
External speaker connector:




MISCELLANEOUS
Manufactured:West Germany, 1960-1970 (Discontinued)
Additional info: 16 tubes
New price 1960 in West Germany: DM 15000.-
Related documents:
Modifications and fixes:
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