Standard Brand / 1S5/DAF91-STANDARD

1S5/DAF91-STANDARD Click on image(s) above to view larger

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Standard Brand was a sub brand of RCA.In later years the Standard Brand was used as a distributor brand and sourced valves from around the world.
The 1S5/DAF91 is a diode pentode valve was designed for battery portable radio receivers. This short grid base pentode was designed with particular reference to AF voltage amplification. The 1.4 Volt filament is to be run from a dry cell and the 90 Volt anode rating matches standard HT batteries.
Standard Brand Made in the UK

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