Can I buy something like this already set up?
Can I buy something like this already set up?
If your radio's output power is between 10 to 50 watts, you might be better off with a true DC to DC converter. Astrodyne's model SVB12SC12 can use 9.2 to 16VDC input & produces solid 12VDC (upto 3.3 amps continuous). It is $115.00 each (to order, go to:
Normaly radios are rated 13.4 volts and chargeing system should produce this. You would need to regulate the whole charging system. One way with std battery chargers is a 2n3055 transistor and 36 watt bulb across output to use up extra with a opamp to drive transistor and a voltage reg driving opamp this is OK to protect battery but does not remove ripple so for a radio may not be good enough and you may get hum on transmit. Some radios will take more than others i.e. a Yaseu FT290R will take 9 to 16 volt but a Icom 290 will need 13 to 13.8 volts but 2 meter sets. So you need to read radio spec. If your getting the charging voltage from mains then use a CB power supply they are regulated and cheap.
All best Eric
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