FOR SALE: COLLINS RADIO CO. Cedar Rapids, IOWA COLLINS P/N 292-0114-00 OVEN, CRYSTAL - 1 EACH. Type TCO-21D. 27.5V at 0.3A and 75 degrees C. New in Box - Made for Collins by Bliley. Holds two HC6U crystals. Available for $24.00 plus shipping Picture and details: http://www.af4k.com/miscpart.htm