The key information is listed below:
Input Frequency: 223.18 MHz Output Frequency: 224.78 MHz PL: none requiredXMTR Power: 10 watts or 60 watts Antenna Gain: 5 dBi omni HAAT: 140 feet Location: Lutheran General Hospital, Park Ridge IL near Dempster Street and I-294 northwest of Chicago IL.
The repeater has been at several locations, including IITRI at 35th and State on the IIT campus in the mid-seventies. It was later moved to the old Edgwater Beach Hotel about 5000 north on Lake Shore Drive at Lake Michigan in the eighties.
The current incarnation of the repeater was built by WA9ZMY and tried out from the northwest side. The repeater was installed at its current location atop Lutheran General Hospital in Park Ridge IL.
The repeater had two satellite receive sites, the North site in Lake Zurich at the high school and the South site in Palos Heights at 95th and Roberts Road. The North site went off the air a few years ago. An investigation of the North site showed no equipment or antennas. They were just pulled and disappeared. The South site has been up sporadically depending on the status of a circuit breaker in the building. If lightning hits in the area and it trips, that site may be down.