The K7ICU repeater is located at the base of the Catalina Mountains at a height of about 2900 feet AMSL. It is an open system providing good coverage to most of the greater Tucson area. The system is equipped with short-term battery backup power for operation during a utility power outage.
The system uses delayed/COS gated receive audio, reverse phase burst CTCSS (Motorola 120° phase shift), a CTCSS dropout timer and a squelch tail hang timer to eliminate squelch noises on most tone squelch enabled receivers. CTCSS is also not encoded during voice or CW ID and DTMF tones will not pass through the repeater. Use the DTMF Regenerate function (see DTMF Commands) if you need the repeater to output DTMF tones