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General |
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HAM bands | 80m 40m 20m 15m 10m | ? | ? |
Freq. stability | ? | ? | ? |
Tuning steps | Continuous | ? | ? |
Receiver |
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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) 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 |
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TX-range | - | 50-52 MHz | - |
Modulations | - | CW SSB | - |
RF-output | ? | 100 W | ? |
Connections |
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Antenna | - | SO-239 | BNC |
Impedance | 50Ω | 50 Ω | 50 Ω |
Other | - | - | - |
Electrical |
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Power req. | ? | Mains | 9V DC external or 6V DC (4LR6) internal |
Current RX | ? | ? | ? |
TX | - | ? | - |
Physical |
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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 |
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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 |