At 03:44 PM 10/06/08, you wrote:
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,
WHAT excellent battery backup provisions?
It's a simple changeover circuit, and the Kenwood internal
trickle charger is a joke.
with a Wal-Mart marine battery.
You'll be sorry. A marine battery is a just a starting
battery - a variation on an automotive battery. You want
a true deep cycle battery (think "golf cart").
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!
So the battery lasts half as long (powering both repeaters)
and takes twice as long to recharge (being charged by one).
Chappy Rice kd4ss
Float the battery across a good high quality aftermarket
charger that is designed to keep a standby battery alive,
and maximize the life. Look at those sold for RVs and for
standby generators.
Warning - a GOOD charger will not be cheap.
Then run the repeaters as 12v loads. Don't even hook up
the AC power to them. Run the controller off the battery
as well.
Mike WA6ILQ
