This list covers three popular services used by preppers and emergency communicators.

1. Family Radio Service (FRS) Channels
(Note: FRS radios are unlicensed and operate at low power.)
• Channel 1: 462.5625 MHz
• Channel 2: 462.5875 MHz
• Channel 3: 462.6125 MHz
• Channel 4: 462.6375 MHz
• Channel 5: 462.6625 MHz
• Channel 6: 462.6875 MHz
• Channel 7: 462.7125 MHz
• Channel 8: 467.5625 MHz
• Channel 9: 467.5875 MHz
• Channel 10: 467.6125 MHz
• Channel 11: 467.6375 MHz
• Channel 12: 467.6625 MHz
• Channel 13: 467.6875 MHz
• Channel 14: 467.7125 MHz

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2. Multi-Use Radio Service (MURS) Channels
(Note: MURS is unlicensed and offers a few channels in the VHF band with moderate range.)
• Channel 1: 151.820 MHz
• Channel 2: 151.880 MHz
• Channel 3: 151.940 MHz
• Channel 4: 154.570 MHz
• Channel 5: 154.600 MHz

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3. Citizens Band (CB) Radio Channels (AM Mode)
(Note: CB radios in the U.S. are unlicensed and offer 40 channels; Channel 9 is designated for emergency use.)
• Channel 1: 26.965 MHz
• Channel 2: 26.975 MHz
• Channel 3: 26.985 MHz
• Channel 4: 27.005 MHz
• Channel 5: 27.015 MHz
• Channel 6: 27.025 MHz
• Channel 7: 27.035 MHz
• Channel 8: 27.055 MHz
• Channel 9 (Emergency): 27.065 MHz
• Channel 10: 27.075 MHz
• Channel 11: 27.085 MHz
• Channel 12: 27.105 MHz
• Channel 13: 27.115 MHz
• Channel 14: 27.125 MHz
• Channel 15: 27.135 MHz
• Channel 16: 27.155 MHz
• Channel 17: 27.165 MHz
• Channel 18: 27.175 MHz
• Channel 19: 27.185 MHz
• Channel 20: 27.205 MHz
• Channel 21: 27.215 MHz
• Channel 22: 27.225 MHz
• Channel 23: 27.255 MHz
• Channel 24: 27.235 MHz
• Channel 25: 27.265 MHz
• Channel 26: 27.275 MHz
• Channel 27: 27.285 MHz
• Channel 28: 27.295 MHz
• Channel 29: 27.305 MHz
• Channel 30: 27.315 MHz
• Channel 31: 27.325 MHz
• Channel 32: 27.335 MHz
• Channel 33: 27.345 MHz
• Channel 34: 27.355 MHz
• Channel 35: 27.365 MHz
• Channel 36: 27.375 MHz
• Channel 37: 27.385 MHz
• Channel 38: 27.395 MHz
• Channel 39: 27.405 MHz
• Channel 40: 27.415 MHz

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Notes:
• Always verify your equipment is capable of transmitting on these frequencies and that you adhere to FCC regulations.
• For FRS and MURS, these channels are strictly unlicensed; ensure that any devices used are certified for the respective service.
• CB radios are typically limited to AM mode in the U.S., and while many modern CB radios offer additional features, always follow FCC guidelines.

This list should serve as a handy reference for establishing unlicensed voice communication networks in emergency or austere environments. Stay safe and be prepared!