CV1039, MARCONI WIRELESS TELEGRAPH, MIL SPEC MU14, ST SHAPE, BROWN BASE, NOV 1955 MANUFACTURE
CV1039, MARCONI WIRELESS TELEGRAPH, MIL SPEC MU14, ST SHAPE, BROWN BASE, NOV 1955 MANUFACTURE This rectifier type had the distinction in 1933 of being Marconi – Osram’s first ever indirectly heated rectifier valve. Many other manufacturers developed and marketed an equivalent with Mazda introducing the equivalent UU4 and UU5 in 1935 and 1936 respectively.
Showing superb performance it has a place alongside that other famed B4 based produce the PX4 & PX25.
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1821, PHILIPS, GLOBE ENVELOPE, 4 RIB PLATE, BROWN BASE, CV1443, UU5, MU14, U10
43IU. COSSOR, OFFSET PARALLELOGRAM ELECTRODE CAGE, SWAN NECK GETTER PAN, 1952 MANUFACTURE, YELLOW PRINT, MARCH 1952 MANUFACTURE
APV4, TUNGSRAM, ,1951 MANUFACTURE, 1867, 1W4-350, CV1039, MU14, R3, R42, UU5