National NC-57
| Type: | HF/VHF receiver |
| Frequency range: | 0.54-55 MHz in five bands |
| Mode: | AM/CW |
| Receiver system: | N/A |
| Sensitivity: | N/A |
| Selectivity: | N/A |
| Image rejection: | N/A |
| Voltage: | Mains |
| Power consumption: | ? |
| Impedance: | 50 ohms |
| Dimensions (W*H*D): | ? mm |
| Weight: | ? Kg |
| Manufactured: | USA, 1947-1951 |
| Other: | 9 tubes
New price 1948 in the US: $89.50 |
| Related documents: | |
| Modifications: | |
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