I just got my Transponder battery replaced by Jeff Chandler. He has a new web address:
http://www.transponderservices.com/He runs a great shop. It took only 5 business days to ship to Australia via the Post Office (FedEx charges an arm and a leg for over-sea shipping), and only 5 business days to have it shipped back to the USA. He even showed me how to use any regulated 12v 300mA adapter to charge the transponder (even a 9v adapter will work). (The positive terminal is at the bottom of an AMB 260 transponder). I highly recommend the guy. ($80 total bill, including shipping).
