> Our club has recently acquired a TKR-750 and a TKR-850, > to replace an aging hodgepodge of repeater components. > Both the TKR's are co-located and share a Link RLC controller. > We want to use the excellent battery-backup provisions of > the TKR's, with a Wal-Mart marine battery. We plan to connect > the one battery to both repeaters' battery ports in parallel, but > activate the charging jumper on only one repeater. > I guess we just want reassurance that there are no problems > with this arrangment; any comments will be appreciated!
There shouldn't be any problems but you might want to consider some type of low voltage disconnect to ensure the equipment doesn't drain the battery down to an early death when the power fails (goes away) for extended periods of time. The selection and addition of a proper size diode and resistor from your power supply + terminal to the battery (direct) (+ terminal) will help more quickly recharge the battery from a depleted condition (versus trusting the trickle charge internal to the Kenwood Repeaters). The diode to prevent reverse current flow and the resistor to limit the charging current to a safe value (for the power supply capacity while still operating the repeater). The wrong selection of the resistor or direct diode to power supply wiring can kill or disable the power supply... so a little thought is required (and advise available upon request). Remember (a big deal) The Low Voltage Disconnect will save your bacon... (battery wise). cheers, s.
