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HFS; National Company; (ID = 1280751) Amateur-R
HFS; National Company; (ID = 1280753) Amateur-R
HFS; National Company; (ID = 1280755) Amateur-R
HFS; National Company; (ID = 1280756) Amateur-R
HFS; National Company; (ID = 203766) Amateur-R HFS; National Company; (ID = 203767) Amateur-R
HFS; National Company; (ID = 228200) Amateur-R HFS; National Company; (ID = 1280749) Amateur-R
HFS; National Company; (ID = 2049323) Amateur-R HFS; National Company; (ID = 2220920) Amateur-R
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HFS; National Company; (ID = 203766) Amateur-R
National Company;: HFS [Amateur-R] ID = 203766 800x506
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For model HFS, National Company; Cambridge & Malden (MA)
Country:  United States of America (USA)
Manufacturer / Brand:  National Company; Cambridge & Malden (MA)
alternative name
National Toy Co.
Year: 1947–1952 ? Category: Amateur-Receiver (amateur bands, may include broadcast bands)
Valves / Tubes 7: 6AK5 9002 6SG7 6SK7 6J5 6V6GT 6J5
Main principle Superheterodyne (common); ZF/IF 10700 kHz
Wave bands Wave Bands given in the notes.
Power type and voltage Powered by external power supply or a main unit. / 6 / 180 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
Power out
from Model: HFS - National Company; Cambridge &
Material Metal case
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 16.5 x 8.75 x 8.5 inch / 419 x 222 x 216 mm
Notes National HFS: experimental VHF-receiver covering 27 - 250 MHz (A: 178-250 MHz, B: 120-178 MHz, C: 80-120 MHz, D: 56-80 MHz, E: 41-60 MHz, F: 27-42 MHz with 6 plug-in coil sets); Modes AM, CW, FM;
powered by optional external power supply 5886AB or 6 volts vibrator pack 686S.
Net weight (2.2 lb = 1 kg) 8.5 kg / 18 lb 11.6 oz (18.722 lb)
Price in first year of sale 125.00 $
Source of data Communications Receivers

Model page created by Martin Bösch. See "Data change" for further contributors.

All listed radios etc. from National Company; Cambridge & Malden (MA)
Here you find 430 models, 275 with images and 162 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.