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Last modified 2023-07-09

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National SW-4 "Thrill Box"

A picture of National SW-4 ''Thrill Box''

SPECIFICATIONS

GENERAL
Type:HF receiver
Frequency range: 0.52-19.4 MHz by plug-in coils
0.52-1.03 MHz (Optional)
1.0-1.76 MHz (Optional)
1.71-2.72 MHz (Optional)
2.6-4.7 MHz
4.6-8.0 MHz
7.3-12.8 MHz
11.3-19.4 MHz
Tuning steps:Analog / continuous
Frequency stability:? ppm
Mode:AM
Channels / memory management: None
Power supply:Mains (External PSU)
Current drain / power consumption:? W
Antenna impedance / connector:? ohm / ?
Dimensions (W*H*D):? mm (?")
Weight:? Kg (? lb)
Other features:




RECEIVER SECTION
Receiver system: Super-regenerative
Sensitivity:
Selectivity:
Image rejection:
AF output power / speaker:? W at ?% distortion / No internal speaker
External speaker connector:Hi-Z (Headphones or external amplifier)




MISCELLANEOUS
Manufactured:USA, 1929-193x (Discontinued)
Additional info:
Related documents:
Modifications and fixes:
Reviews:
Options / Accessories:
3580B Power supply