Antique radios, Old Time Radios
BD-401
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Country:
United States of America (USA)
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| Identical to |
BD-401
= 6702
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| First Source
(s) |
15.Oct.1963 : - - Manufacturers Literature
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| Base |
SPECIAL TUBEBASE in general
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| Was used by |
Military and/or Government |
| Filament |
Vf 6.3 Volts / If 0.3 Ampere / Indirect |
| Description |
Beam switching tube designed to operate as wide-band noise generator. The tube retains only two spade/target systems, other pairs being replaced by anode elements. Anode supply voltage is set for cut-off operation, while biasing of spades and targets is set to prevent stable states.
Target voltage 200V through 5K load resistor, target current 22 to 33mA; anode voltage 200V at 7mA, spade voltage -100V
Min 80mW noise output from 200 to 400MHz.
BD-401 were used in some lines of Hallicrafters AM/FM jammers, QRC/ALT-14,15,16.
Data kindly supplied by Lud Sibley.
"Operating principle of trochotron."
Look at the 6702 for data.
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| Information source |
- - Manufacturers Literature
-- Collector info (Sammler) TCA member Don Helgeson
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BD-401
Emilio Ciardiello
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BD-401: Manufacturer's Literature
Emilio Ciardiello
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