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Desktop Shortwave receiver
Desktop VHF Transceiver
HF/VHF/UHF Scanner / receiver

General

HAM bands 80m  40m  20m  15m  10m  ? ?
Freq. stability ? ? ?
Tuning steps Continuous ? ?

Receiver

RX-range 10-80 m 50-52 MHz 29-54 / 108-174 / 380-512 / 806-824 / 849-869 / 894-960 MHz (USA)
Modulations AM   CW   SSB   CW   SSB   AM   FM  
Sensitivity ? ? 29-54 MHz: 0.3 µV (20 dB S/N)108-137 MHz: 1 µV (20 dB S/N)
137-960 MHz: 0.5 µV (20 dB S/N)
Selectivity ? ? +/-10 kHz (-6 dB), +/-18 kHz (-50 dB)
Filters ? ? ?
Receiver system ? ? Triple conversion superheterodyne
IF-freqs. ? ? 1st: 257.5 MHz
2nd: 21.4 MHz
3rd: 455 KHz
Image rejection ? ? ?
Audio output ? ? ?

Transmitter

TX-range - 50-52 MHz -
Modulations - CW   SSB   -
RF-output ? 100 W ?

Connections

Antenna - SO-239 BNC
Impedance 50Ω 50 Ω 50 Ω
Other - - -

Electrical

Power req. ? Mains 9V DC external or 6V DC (4LR6) internal
Current RX ? ? ?
TX - ? -

Physical

Manufactured Between 1959 and 1962 in USA Between 1965 and 1971 in USA Between 19xx and 19xx
Dimensions 308 × 155 × 254 mm
(12.13 × 6.10 × 10.00 in)
? 63 × 145 × 34 mm
(2.48 × 5.71 × 1.34 in)
Weight 7.00 kg (15.4 lbs) ? 210 gr (7.4 oz)
Form factor Base Station Base Station Unknown

Other features

Memories None ? 200 channels in 10 bank(s)
Usage Amateur / Ham radio operators Amateur / Ham radio operators Amateur / Ham radio operators
Features ? ? RS-232
Accessories ? ? ?
MPN HEATHKIT-MR-000001-'COMANCHE' HEATHKIT-SB-000110 RADIOSHACK-/-REALISTIC-PRO-000089