Antique radios, Old Time Radios
725A
| Was used by |
Radar |
| Filament |
Vf 6.3 Volts / If 1 Ampere / Half indirect |
| Description |
Fixed frequency, 9375MHz, magnetron capable of delivering 60KW pulse. Flanged waveguide parallel to the cathode axis.
One of the first X-band magnetron produced in large quantities since WWII. 725A was developed by Bell Telephone and WE, scaling down the S-band design and increasing the cavity number to 12, to operate with relatively small permanent magnets. Production started in the late 1942. 89,480 units of this magnetron were supplied to British Empire under the Lend-Lease law.
Widely used in several aircraft radar equipment, such as AN/APS-3, AN/APS-4 and AN/APS-15.
Several manufacturers, including Amperex, Mullard, Northern Electric, Philips, Raytheon, Toshiba, Valvo and Western Electric.
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
-- Original prospect or advert Callick, Metres to Microwaves
- - Manufacturers Literature
Tube Lore (I)
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725A: Manufacturer's Literature
Emilio Ciardiello
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
Collection of
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