Astron makes a unit that will convert 28V to 12VDC puts out about 10A. I have certified it for use on a biz jet aircraft. We put it through a complete battery of environmental and electrical tests and it faired very well.
The only issue we had was the conducted RF emissions on the power leads were a little higher than desired. It didn't interfere with any of the aircraft navigation or communication radios when we did the aircraft EMI test. We were able to kill some of the RF by bridging some bypass caps across the power in and out pins and from the pins to the case ground. John Lock kf0m at arrl.net > -----Original Message----- > From: [email protected] > [mailto:[EMAIL PROTECTED] Behalf Of Rick & Charlotte > Sent: Monday, March 24, 2008 2:22 PM > To: [email protected] > Subject: [Repeater-Builder] 24 vdc to 12vdc > > > I hope some one on the group can help me out here > > I want to put a radio in a jeep > > the problem is the jeep runs 24 v and as you know radios run 12v > > Is there a device that will drop 24v down to 12 vdv ? I know I > could use a > droping resistor but I can see it making a lot of heat > > if I remember right the jeep uses 2 12 v batts can I just tape > off one set for > the radio ? > > I know this is not about repeaters , but just thought some one > might have > an idea .. > > Thanks > > Rick > > Of all the intelligent animals, Human is the species that is > least likely to learn > from its experience. > That explains why so manny of us have more then one Border Collie ! > > == www.karolinabc.ca == > > Rick,Charlote & Kids > Our Border Collies > Miss Daisy Duke > Sir Red-A-Lot > Miss Elly May > Mr Boots > Mr. Balue > Our Border Collie Message Group > [EMAIL PROTECTED] > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > >
