Motorcycle radio battery eliminators
Fed up with your batteries always going flat ? sick of having to recharge the radio ? Well what about running the radio off the motorcycle battery. Battery eliminators can be fitted to just about all radios ,and intercoms, this is providing you don't mind having the radio dedicated to use only on the bike . Most radios operate on 4.5 ,6.0 or if a high power radio 7.2 volts and are negative earth and will require some form of voltage controlling electronics to drop the motorcycle 13.8 Volts down to the operating voltage of the radio .
If you are going to use a battery eliminator ,then make sure it has enough current rating to operate your radio on transmit, also sufficient heat sinking to shed the excess power . Most eliminators not all though , use a 3 terminal fixed voltage regulator .They are usually good for about 1.5 Amps which is probably enough for just about any handheld on transmit , These regulators are some what self protecting and will shut down if they get too hot ,and your radio stops halfway through your contact ! make sure there is plenty of heat sink on the regulating device and where ever you mount it , it has plenty of air cooling so as to dissipate the excess heat .
Dick Smith electronics http://www.dse.co.nz/ do sell a kit form of a suitable voltage regulator . cat No. K3594 or K3592
Jaycar Electronics (NZ) http://www.jaycar.co.nz/
sell a selectable voltage dropping kit CAT.NO.KA1797
If you don't want to solder to the radios battery connections, you can make up dummy batteries (AA or AAA )out of wooden dowel and use thumbtacks at the end to make the electrical connections .
The Digitalk SP2302AA is a 3 W radio that has an optional 12 V connection cable and it will operate while connected to this charging cable !!
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Pinfold Health Services Ltd,1172 Arawa St, Rotorua 3201,New Zealand. ph +64-7-3488850 fax +64-7-3486555 email@example.com
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