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Desktop Shortwave receiver
Handheld VHF Transceiver
Base Station Amateur HF Receiver

General

HAM bands ? ? ?
Freq. stability ? ? ?
Tuning steps ? ? Continuous

Receiver

RX-range 0.5-32 MHz ? 545 kHz - 33 MHz with plug-in coils
Modulations AM   CW   FM   AM   CW  
Sensitivity AM: 5-9 µV
CW: 2-3 µV
? ?
Selectivity ? ? ?
Filters ? ? XTAL-filter was added in later versions
Receiver system Double / triple conversion, 25 tubes ? Single conversion superheterodyne
IF-freqs. ? ? 465 kHz
Image rejection ? ? ?
Audio output ? ? 1 W

Transmitter

TX-range - ? -
Modulations - FM   -
RF-output ? ? ?

Connections

Antenna - - Clamps / screws
Impedance 50 Ω ? ?
Other - - -

Electrical

Power req. 25-28V DC ? Mains
Current RX 3 A max ? ?
TX - ? -

Physical

Manufactured Between 195x and 195x in USA Between 19xx and 19xx Between 1932 and 1935 in USA
Dimensions 283 × 293 × 352 mm
(11.14 × 11.54 × 13.86 in)
? 527 × 241 × 349 mm
(20.75 × 9.49 × 13.74 in)
Weight 23.70 kg (52.3 lbs) ? ?
Form factor Base Station Handheld Base Station

Other features

Memories ? ? ?
Usage Military communication Military communication Amateur / Ham radio operators
Features ? ? ?
Accessories ? ? ?
MPN COLLINS-R-000392/URR HAMMARLUND-FM-000001 HAMMARLUND-COMET-PRO