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Wireless World, October 3, 1928.
Valves Advertised:
GP210, HF210, RC210, LF215, P227, GP407, HF407, RC407,
LF407
,
P415
,
GP607
, HF607, RC607, LF607, P615 & PX650
Extras ▼
BTH
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adv-1819