All, In looking at some information on app_rpt it appears that it decodes and encodes MDC1200 just fine. Is anybody using MDC1200 to control access to their repeater in place of CTCSS/DCS? I don't want to lock people out of my repeater, I just want to know who is using it by implementing MDC1200. Ideally they will just fill out a form and it will add it to the database and they can program their radio. Basically, I don't want it to key up the transmitter if it doesn't have a MDC1200 in a list or database. In addition, it would be nice if it silenced the MDC1200 code to the transmitter so that all listening cant hear and decode the MDC1200. Regards, Chris, KC7WSU