MFJ has a new product that may be of interest to some (not all) repeater owners. It's called the MFJ-4416 Super Battery Booster. This will keep 13.8VDC supplied to your repeater, even if the batteries drop to 9VDC. (I would suggest setting it for 10VDC). There are some efficiency questions, but this device would be a quick "out-of-the-box" problem solver for battery backup. It has Low Voltage Dropout to protect the batteries, High Voltage Crowbar to protect the repeater equipment, and an interesting RF Sampling port that activates the battery boost only during transmit.
Again, it's probably not for the repeater purist, but definitely warrants a look at it. 73, Joe, k1ike Willis M. Hagler wrote: > > Hello Everyone, > > I am wondering what repeater operators commonly use when a 12v power > supply as well as a battery charging and switching system is needed at > a repeater site. > > . > >
