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Last modified 2023-07-09

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National NC-300

A picture of National NC-300

SPECIFICATIONS

GENERAL
Type:Amateur band HF/(VHF) receiver
Frequency range: 10-160 m in seven bands (6 m / 2 m / 1.25 m options)
160 m:   1.8-2.0 MHz
80 m:   3.5-4.0 MHz
40 m:   7.0-7.3 MHz
20 m:   14.0-14.4 MHz
15 m:   21.0-21.5 MHz
11 m:   26.5-27.5 MHz
10 m:   28.0-29.7 MHz
Tuning steps:Analog / continuous
Frequency stability:? ppm
Mode:AM / SSB / CW
Channels / memory management: None
Power supply:Mains: 105-130 VAC
Current drain / power consumption:60 W
Antenna impedance / connector:50-300 ohm / ?
Dimensions (W*H*D):495*286*381 mm (19.5*11.25*15")
Weight:25.9 Kg (57 lb)
Other features:




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 2.215 MHz
2nd IF: 80 KHz
Sensitivity:1.5 uV (No reference)
Selectivity: Selectable
8, 3.5 KHz and 500 Hz
Image rejection:Better than 50 dB
AF output power / speaker:1 W at ?% distortion / No internal speaker
External speaker connector:8 ohm




MISCELLANEOUS
Manufactured:USA, 1955-1958 (Discontinued)
Additional info:13 tubes
Related documents:
Modifications and fixes:
Reviews: CQ: October 1955
QST: January 1956, page 44
Options / Accessories:
BC-300C1
NC-300C2
NC-300C6
NC-300CC
NC-300TS
XCU-300
1.25 m converter
2 m converter
6 m converter
Converter cabinet
Matching speaker
Calibrator