Ref: CAP Altitude & Geographic Restrictions
International treaties restrict the use of some CAP frequencies in the Border Zones shown on this map. The northern Canadian border zone is defined by “Line A”, the Alaskan by "Line C", and Mexico Sharing Zone which are shown on this map. Special restriction circles are shown by clicking the checkboxes in the text descriptions. The following altitude restrictions apply until further notice:
Simplex: CAPGUARD and TAC 1 may be used without restriction within the Border Zone. CC 1, AIR 1 and AIR 2 may be used within the Border Zone,
however Canadian operations at several locations must be avoided. These areas are defined as follows:
CC 1: 60 km fron Sault Ste. Marie, Leamington, Chatam, and Oxford (red)
AIR 1: 120 km from Sault Ste. Marie, Sarnia, Wallace Bug, and Windsor (green)
AIR 2: 220 km from Tehkummah, Watford, and Brantford (blue)
Note: Use of CC 2 is not authorized within the Border Zone, and airborne operations outside the Border Zone should ensure that interference to Canadian Operations is minimized.
All of the other CAP Simplex channels may be used within the Border Zone at 5 watts output power or less; however, airborne operation, even at 5 watts or less, has the potential to interfere with Canadian operations, and airborne use of Simplex channels other than TAC 1 and CAPGUARD should be minimized for this reason.
Operations on TAC 1 in Ohio and Michigan need to be aware of the use of this channel as a repeater input in Pennsylvania and restrict their use of it to preclude interference to CAP repeaters there.
Repeater: Operation on the input to CAP Repeater Channel 1 and the Tactical repeater are not
authorized within the Border Zone, and all repeaters located in or near the Border Zone have been moved
to Channel 2. Operations using the tactical repeaters within the Border Zone MUST utilize R64 or other
authorized Channel 2 repeater frequencies ONLY.
Altitude Restrictions: Within the Border Zone CAP aircraft are only authorized to transmit below 3,000 feet AGL. Outside of the Border Zone, CAP is authorized to operate “occasionally” up to 12,500 feet AGL, HOWEVER --CAP aircraft that access Channel 1 CAP repeaters or utilize Simplex channels other than AIR 1, TAC 1 or CAPGUARD should be aware of the potential for interference to Canadian operations, particularly if they operate above 3,000 feet AGL. Guidance from NHQ should be sought if a proposed activity has the potential to interfere with Canadian operations.