On Fri, 29 May 2009 17:26:18 -0400, Gary Poland wrote: >Mount a small 3 inch 12 volt fan on the back of the PA cage, the holes match >up without any modification to the cage. Take 12 ac from the filament supply >somewhere under the chassis and run it through a diode to a small >electrolytic. The size of the electrolytic will actually decide the fan speed. >This is a neat installation that works great and the fan shuts on/off with the >transmitter.
Been there, done that, works great! Ball bearing fans recommended; cheap sleeve bearing fans fail early and often. Panasonic Panaflo are the cat's meow. 73 -Jim -- Ham Radio NU0C Lincoln, Nebraska, U.S.S.A. TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! "Give a man a URL, and he will learn for an hour; teach him to Google, and he will learn for a lifetime." HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/ http://radiojim.exofire.net http://incolor.inetnebr.com/jshorney http://www.nebraskaghosts.org _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
