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Relay Rack HRO-SPC

Relay Rack HRO-SPC; National Company; (ID = 269685) Misc Relay Rack HRO-SPC; National Company; (ID = 408314) Misc
Relay Rack HRO-SPC; National Company; (ID = 408315) Misc Relay Rack HRO-SPC; National Company; (ID = 408316) Misc
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Relay Rack HRO-SPC; National Company; (ID = 269685) Misc
National Company;: Relay Rack HRO-SPC [Misc] ID = 269685 588x700
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For model Relay Rack HRO-SPC, National Company; Cambridge & Malden (MA):
HRO receiver in place
Country:  United States of America (USA)
Manufacturer / Brand:  National Company; Cambridge & Malden (MA)
alternative name
National Toy Co.
Year: 1938 ?? Category: Miscellaneous (Other, Various) - see notes
Valves / Tubes 1: 80
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm
Power out
from Model: Relay Rack HRO-SPC - National Company; Cambridge &
Material Metal case
Shape Rack
Dimensions (WHD) 0 x 16 x 0 inch / 0 x 406 x 0 mm
Notes Relay Rack unit matching the HRO series receivers, consisting of a coil rack for storing 5 HRO plug-in coils, an 8 inch dyn. speaker with an impedance matching transformer and a power supply for HRO(5897 character).
Grey or black finish.
Price in 1938 less tube.
Price in first year of sale 90.00 $
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.