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The 1R5 is a miniature battery heptode frequency changer valve (tube),
developed especially for all-wave receivers for frequencies up to 20 MHz.
The low current of the filament (header) makes it particularly suitable
for application in portable battery-powered equipment. It has a B7G base.
The 1R5 was first introduced in the US in 1940 and a couple of years
later also in the UK.
Pinout as seen from the bottom of the valve.
➤ 1R5 datasheet
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© Crypto Museum. Created: Sunday 01 January 2023. Last changed: Sunday, 01 January 2023 - 11:41 CET.
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