Antique radios, Old Time Radios
700A
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Country:
United States of America (USA)
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| Identical to |
700A
= CV689
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| Similar
Tubes |
Multiple differences or of other kind:
4J42
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Successor Tubes
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4J42
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| Was used by |
Radar |
| Filament |
Vf 13.5 Volts / If 1.85 Ampere / Indirect |
| Description |
External magnet 6-cavity unstrapped magnetron. 12KV, 10A, 650 gauss, 40KW peak pulse. 715MHz +/- 5MHz. Coaxial output.
The first multicavity magnetron to go into production in America, for use in the transmitter of MK 3 and MK 4 radar sets. The pulse modulator used a couple of 701A. The TR box used the 702A TR switch mounted in the center of a half-wavelength coaxial line. The receiver used two 316As as local oscillator and as first dtector. Later replaced by GL-446.
Replaced by tunable 4J42.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Tube Lore (I)
- - Manufacturers Literature
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
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