Antique radios, Old Time Radios
304L
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Country:
United States of America (USA)
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| Identical to |
304L
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| Similar
Tubes |
Normally replaceable-slightly different:
304TL
Other characteristic (electr. data):
304H
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| Base |
Large 4 pin Bayonet
Sidecontact and top contact.
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| Filament |
Vf 10 Volts / If 26 Ampere |
| Description |
The HK-304L is a 300 watt general purpose triode with a mu of 10 made by paralleling four 75 watt tubes in one envelope. They were used extensively in WWII as pulse tubes and amplifiers. Although they have the same military number as the EIMAC 304TL they differ in the height of the tube so they are not always switchable. All the grid connections came through the glass and were terminated with a metal ring and grid cap. Some had two grid caps. HK also made this tube in the higher mu version the HK-304H.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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Collection of
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