Compare specifications between amateur radios. Simply select up to 3 radios and compare them side-by-side, including images and descriptions.
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General |
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| HAM bands | ? | ? | 11m (CB) |
| Freq. stability | 0.01% or less | ? | ? |
| Tuning steps | ? | ? | Channelized |
Receiver |
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| RX-range | 0.54-40 MHz | 0.525-30 / 88-108 MHz | 26.965-27.255 MHz |
| Modulations | AM CW SSB | AM W-FM CW SSB | AM |
| Sensitivity | Better than 1-2 µV (10dB S/N) | 1.4µV | 0.4 µV for 10 dB S/N |
| Selectivity | 6 positions | 3 / 7 kHz (-6dB) |
7 kHz @ -6 dB 21 kHz @ -60 dB |
| Filters | 200Hz / 5.2kHz | ? | ? |
| Receiver system | ? | Double conversion superheterodyne | Crystal controlled single conversion superheterodyne |
| IF-freqs. | 455 kHz |
1st: 10.695 MHz 2nd: 455 kHz |
455 kHz |
| Image rejection | ? | ? | ? |
| Audio output | 1.5 watts at less than 10% distortion | ? | 3 W |
Transmitter |
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| TX-range | - | - | 26.965-27.255 MHz |
| Modulations | - | - | AM |
| RF-output | ? | ? | 2.8 W |
Connections |
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| Antenna | Clamps / screws | Clamps / screws + Built-in sweep | - |
| Impedance | 50/300Ω | 50/75Ω | 50Ω |
| Other | - | - | - |
Electrical |
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| Power req. | ? | Mains or 12V DC (8×LR20 / D) | Mains |
| Current RX | ? | ? | ? |
| TX | - | - | ? |
Physical |
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| Manufactured | Between 1957 and 1960 in USA | Between 1982 and 1985 in Japan | Between 195x and 196x in USA |
| Dimensions |
412 × 254 × 276 mm (16.22 × 10.00 × 10.87 in) |
370 × 122 × 241 mm (14.57 × 4.80 × 9.49 in) |
143 × 178 × 290 mm (5.63 × 7.01 × 11.42 in) |
| Weight | ? | 3.60 kg (7.9 lbs) | 5.40 kg (11.9 lbs) |
| Form factor | Base Station | Handheld | Base Station |
Other features |
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| Memories | ? | ? | 10 channels in 1 bank(s) |
| Usage | Amateur / Ham radio operators | Amateur / Ham radio operators | Citizen Band (27Mc) |
| Features | ? | ? | ? |
| Accessories | ? | ? | ? |
| MPN | NATIONAL-COMPANY-NC-000109 | NATIONAL-/-PANASONIC-RF-003100 | E.F.-JOHNSON-MESSENGER-II |