2 TUBE ELECTRONIC KEYER
USES 2 6D10 TUBES & 5 TRANSISTORS. 4 PN2222 AND 1 2N3055 FOR THE TRANSMITTER. ALSO USES A POLIZED RELAY. ACEPTS A DUBLE PADDEL KEY. DOCUMENTS IN DOCUMENTS.
VACUUM TUBE SWITCHLESS INTERCOM
A switchless intercom using vacuum tubes. The 50L6 can be replaced by a 50C5 or 50B5, The 12SR7 can br replaced by a 12AV6 or a 12AT6. And the 50Y7 can be replaced by (2) 35W4's. Uses 120VAC.DONOT use chassie as ground!!! Use a BUS BAR instead.
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