Speaking of odd ball power problems, I have a new in box Astron model 4812-20 converter. 32 to 56 volts input, 13.8 volts out @20 amps. Great for shipboard or railroad use... $40.00 shipped anywhere in USA lance N2HBA ----- Original Message ----- From: Dave VanHorn To: [email protected] Sent: Monday, March 24, 2008 11:55 PM Subject: [Repeater-Builder] Re: 24 vdc to 12vdc
Someone else mentioned the Astron converter. You can also buy inverters (usually online) designed for 24V input, and use that to run a small gel cell charger, with an appropriately sized gel cell. Neither the charger or the battery need to be big, unless you need to transmit a lot. The charge "refills" the battery when you're listening, or when the radio is off. Resistors are a bad idea, and tapping power from one battery is another bad idea, not just because of the damage to the high side battery, but the transients in a 24V system are double that in a 12V system, and your 12V radio has likely not been designed to live in that environment. ------------------------------------------------------------------------------ No virus found in this incoming message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.21.8/1340 - Release Date: 3/23/2008 6:50 PM
