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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 | 80m 40m 20m 15m 10m | 160m 80m 60m 40m 30m (WARC) 20m 17m (WARC) | 11m (CB) |
| Freq. stability | ± 50 cps per hour after warm up | ? | ? |
| Tuning steps | ? | Continuous | Channelized |
Receiver |
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| RX-range | 10-80 m |
2609-19355 kHz (526-2727 kHz optional) |
26.965-27.255 MHz |
| Modulations | AM CW SSB | AM | AM |
| Sensitivity | 0.5 µV for 10 dB S/N in SSB mode | ? | 0.4 µV for 10 dB S/N |
| Selectivity | SSB: 2.8 kHz (-6 dB) | ? |
7 kHz @ -6 dB 21 kHz @ -60 dB |
| Filters | ? | ? | ? |
| Receiver system | Double conversion superheterodyne | ? | Crystal controlled single conversion superheterodyne |
| IF-freqs. | ? | ? | 455 kHz |
| Image rejection | ? | ? | ? |
| Audio output | Requires external speaker | ? | 3 W |
Transmitter |
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| TX-range | 10-80 m | - | 26.965-27.255 MHz |
| Modulations | AM CW SSB | - | AM |
| RF-output | AM: 100 W (input), SSB: 200 W (PEP input), CW: 200 W (input) | ? | 2.8 W |
Connections |
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| Antenna | SO-239 + Clamps / screws | Clamps / screws | - |
| Impedance | 25/100Ω | 50Ω | 50Ω |
| Other | - | - | - |
Electrical |
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| Power req. | Mains (NCX-A) | External power supply | Mains |
| Current RX | ? | ? | ? |
| TX | ? | - | ? |
Physical |
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| Manufactured | Between 1965 and 196x in USA | Between 1930 and 1934 in USA | Between 195x and 196x in USA |
| Dimensions |
350 × 165 × 310 mm (13.78 × 6.50 × 12.20 in) |
? |
143 × 178 × 290 mm (5.63 × 7.01 × 11.42 in) |
| Weight | 10.40 kg (22.9 lbs) | ? | 5.40 kg (11.9 lbs) |
| Form factor | Base Station | Base Station | Base Station |
Other features |
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| Memories | None | None | 10 channels in 1 bank(s) |
| Usage | Amateur / Ham radio operators | Amateur / Ham radio operators | Citizen Band (27Mc) |
| Features | ? | ? | ? |
| Accessories | NCX-A Power supply / speaker | ? | ? |
| MPN | NATIONAL-COMPANY-NCX-000005-MKII | NATIONAL-COMPANY-SW-000005 | E.F.-JOHNSON-MESSENGER-II |
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