Antique radios, Old Time Radios
ME-664-A
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Country:
Japan
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| Identical to |
ME-664-A
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| Similar
Tubes |
Normally replaceable-slightly different:
954
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| Base |
SPECIAL TUBEBASE in general
Top contact.
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| Was used by |
Military and/or Government |
| Filament |
Vf 6.3 Volts / If 0.15 Ampere / Indirect / Specified voltage AC/DC |
| Description |
The ME-664-A is an "acorn style" pentode manufactured by NEC for use as a VHF amplifier, detector or oscillator. It was used for the "Tachi 6" Early Warning Radar developed in 1942 as the RF amplifier and the local oscillator.
So the ME-664-A should be developed in 1942 or just before 1942.
Plate Voltage: 250 V
G2 Voltage: 100 V
G1 Voltage -3.0 V
Plate Current: 2.7 mA
gm: 1,500 Micromhos
Plate Resistance: 0.8 Megohms
Heater Voltage: 6.3 V
Heater Current: 0.15A
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Dimensions (WHD)
incl. pins / tip |
x 123 x 45 mm / x 4.84 x 1.77 inch |
| Weight |
48 g / 1.69 oz |
| Information source |
Babani, International Radio Tube Encyclopaedia Dawn of Tube Production in Japan - Ohtsuka.
-- Collector info (Sammler) Dawn
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ME-664-A: H. Kato
Stefan Müller
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