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<br />· Texas Law 1 is hereby designated as the primary on-incident calling and coordination <br />channel for mobile and portable units. Note that mobile and portable units will hear nearby <br />transmissions directed to dispatch centers on Texas Law 2 but will not hear dispatch center <br />responses. <br /> <br />· Texas Law 2 is hereby designated as the primary transient/en-route calling channel for <br />interoperable VHF wideband channel communications between mobile/portable units, fixed <br />and/or temporary base and repeater (mobile relay) stations. Note: 1I1e Texas Law 2 channel <br />is no longer designated as an "Intercity" channel. <br /> <br />· During an incident, the on-incident commander mayor may not be within range of a Texas <br />Law 2 fixed or temporary base station. Should this occur, the on-incident commander's <br />radio should have the capability of operating like a temporary Texas Law 2 base station. <br />This requires putting a "TL2A 8ase" channel into the radios of those officers who could <br />potentially be required to act an incident commander. This channel would be configured like <br />a Texas Law 2 base station, transmitting on Texas Law 2 and receiving on Texas Law 1 <br />(CTCSS decode, 127.3 Hz). <br /> <br />· Texas Law 3 is designated as a tactical frequency primarily for law enforcement~related <br />incidents/events, but can be used as determined by the incident commander for any <br />discipline. <br /> <br />· Texas Fire 1, 2 and 3 are designated as tactical or command frequencies primarily for fire <br />agencies, but can be used as determined by the incident commander for any discipline. <br /> <br />· Texas Med 1 is designated as a tactical or command frequency primarily for medical <br />agencies, but can be used as determined by the incident commander for any discipline. <br /> <br />· Texas Air 2 is designated for Ground~to-Air communications with State and Federal <br />Aircraft ONL Y that may be assigned to an incident or event. It is to be used with only with <br />state and federal aircraft and is not designated for use with local aircraft, including local <br />EMS aircraft. Other frequencies associated with the VHF wideband frequencies can be <br />used with local EMS aircraft, such as Texas Law 1 or 3, Texas Fire 1 -3, or Texas Med 1. <br /> <br />· Some of the VHF wideband interoperable frequencies are in use across the state as primary <br />channels for many agencies. Therefore, the channels should be monitored before <br />assigning them for use on an incident or event to avoid interference with local agencies. <br /> <br />· Gateways, patching or cross-band repeating of VHF wideband calling channels to calling <br />channels in other bands is not permitted. Patching to/between interoperability tactical <br />channels is permitted during incidents or events involving interagency personnel if soidirected by the incident commander. <br /> <br />9 <br />