west wr21d

Westinghouse WR21(D)
DC Det/Amp Triode
1921


The WR21(D) had the Westinghouse Style # 319513 and was rated for use as an detector/amplifier. The tips of these tubes were marked with green lacquer which rubbed off easily. This tube was used only in the Aeriola Grand receiver and the DR det-amp.

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