Most likely, the clock needs 5V for the internal lighting. Many aircrft clocks are mechanical, but some are lectrical and need 28VDC.
-----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on Behalf Of Charles Rushing Sent: Thursday, May 21, 2009 1:45 AM To: time-nuts@febo.com Subject: [time-nuts] 747 Chronometer Greetings To All, Please accept my apologies in advance if this is off-topic. I have just acquired an aircraft clock, which I've tentatively identified as coming from a Boeing 747. It's way cool looking and would make a perfect dust collector in my ham shack if I could only power it up. There is a multi-pin military-style twist-lock connector on the back, but no indication of what the pinout may be. The unit is identified as: "CLOCK, 3" 24 HOUR GMT ELECTRONIC MFD BY A.W. HAYDON CO. PRODUCTS NO. AMER. PHILIPS CONTROLS CORP. Cheshire, Conn. MFR'S. PT. NO. A15551-P1" I've searched the Net for technical documentation, but could only find the reference to the 747. Does anyone have any information about these clocks, or can someone point me in the right direction? Many thanks in advance. Chuck WA5MUV _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
