Antique radios, Old Time Radios
6687
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Country:
United States of America (USA)
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| Identical to |
6687
= E91H
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| Similar
Tubes |
Normally replaceable-slightly different:
1680
; 2032
; 5915
; EH900S
; EH960
Other class quality (otherwise equal):
6BY6
|
| First Source
(s) |
23.Jul.1956 : Electron Tube Registration List
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| Predecessor Tubes |
5915
EH900S
|
| Filament |
Vf 6.3 Volts / If 0.27 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Designed as logic switching tube: both control grids at 0 V = tube conducts, control grid #1 OR control grid #3 at negative voltage: tube blocked. _ [JR]
Text in other
languages (may
differ)
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| Tube prices |
1 Tube prices (visible for members
only)
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6687: Telefunken Taschenbuch 1971
Anonymous 15 Collector
More ...
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6687: VALVO-Handbuch 1966
Oskar Elm
More ...
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