this post was submitted on 04 Mar 2024
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Amateur Radio
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On VHF and up, each state will have their own bandplans. Look up the bandplan for your state and look for simplex frequencies.
The nation wide FM calling frequencies for 6m, 2m, 1.25m & 70cm are 52.525 MHz, 146.52 MHz, 223.5 MHz & 446 MHz.
The FCC sets what parts of the bands can be used for phone and what's CW or data only. Apart from that everything is basically a gentleman's agreement. Since HF can go a long ways, there's no point making local band plans for it. VHF and up is shorter range and some areas have different needs than others. There are frequency coordinators that handle the band plans and repeater pair assignments. Some states have more than one frequency coordinator for different parts of the state. Some frequency coordinators only handle repeater pairs and don't publish a band plan.