Don, Don't be in a big rush to provide AC backup power if your repeater can float on batteries. My local electric utility is going to cough up about $1,300 to repair a commercial repeater that suffered a scrambled memory because the well-meaning site operator installed a large APC UPS to "protect" the repeater. When the 12kV power line to the site lost one phase, the UPS ran down rather quickly and then began to kick in and out, which interfered with the station's boot-up process. In this situation, a small (under 2 kVA) UPS is more of a liability than an asset.
If the station can run on DC power, always consider using a floated battery bank as your primary power source. You do not need a huge power supply with a floated battery bank; usually, a 12 or 20 ampere power supply is more than adequate. 73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Don Kupferschmidt Sent: Wednesday, May 23, 2007 9:37 AM To: [email protected] Subject: [Repeater-Builder] UPS Hello all, I'm in the process of rebuilding one of my repeaters and I'm looking to place a UPS in line for backup. I'm looking for information on make and models - what's good and what to stay away from. The VA range is 1300 to 1500, and I'm willing to spend no more than $200.00. Thoughts and comments appreciated. TIA, Don, KD9PT
