Antique radios, Old Time Radios
NT77
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| Tube type: |
Transmitting Tetrode, air cooled |
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| Identical to |
NT77
= CV50
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| Predecessor Tubes |
NT60
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| Base |
Wires
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| Was used by |
Radar |
| Filament |
Vf 10 Volts / If 68 Ampere / Direct |
| Description |
Silica envelope transmitting tetrode. Similar to NT60 with thoriated tungsten filament. Used in the transmitter of metric radar sets.
4 kV anode voltage
70 A cathode current
7.5 mA / V mutual conductance
90 mm bulb diameter
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Dimensions (WHD)
incl. pins / tip |
200 x 300 x mm / 7.87 x 11.81 x inch |
| Information source |
-- Original-techn. papers.
-- Original prospect or advert Callick, Metres to Microwaves, pg.37
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