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Desktop Shortwave Transmitter
HF Receiver
FM Monitor Receiver

General

HAM bands 80m  40m  20m  15m  10m  ? 2m 
Freq. stability ? ? ± .001% (High band) ± .002% (Low-band)
Tuning steps ? ? ?

Receiver

RX-range - 0.54-20 MHz 147-174 MHz
Modulations - AM   CW   FM  
Sensitivity ? ? ≥ 0.5 µV (High-band)
≥ 0.35 µV (Low-band)
Selectivity ? ? ± 5 kHz @ 6 dB
± 17 kHz @ 100 dB
Filters ? ? ?
Receiver system XTAL ? ?
IF-freqs. ? ? ?
Image rejection ? ? ?
Audio output ? ? 1.5 W @ 10% THD, internal speaker

Transmitter

TX-range 80-10 m - -
Modulations AM   CW   - -
RF-output 20 W ? ?

Connections

Antenna - Clamps / screws -
Impedance 50/600 Ω 100 Ω ?
Other - - -

Electrical

Power req. Mains Separate PSU Mains (117 V AC, 60 cycles)
Current RX - ? 75 W
TX ? - -

Physical

Manufactured Between 19xx and 19xx Between 1939 and 1945 in USA Between 196x and 19xx in USA
Dimensions ? ? 330 × 178 × 187 mm
(12.99 × 7.01 × 7.36 in)
Weight ? 33.00 kg (72.8 lbs) 7.25 kg (16.0 lbs)
Form factor Base Station Unknown Base Station

Other features

Memories ? ? 6 channels in 1 bank(s)
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features ? ? ?
Accessories ? ? ?
MPN HAMMARLUND-FOUR-000020 HAMMARLUND-SPR-000220-X HAMMARLUND-MR-000050X