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Posted
2 hours ago, cbailey said:

Do ALL GMRS repeaters have a +5 offset?

According to the regulations repeaters are limited to transmit on any of the eight 462 MHz Main channels. Radios are limited to transmit to repeaters on any of the eight 467 MHz Main channels.

Most radios pair the 462 MHz Main channels with the 467 MHz Main channels and that makes perfect sense.
But, the rules do not require it. You can program your repeater to use any one of the 462 MHz Main channels with any one of the 467 MHz Main channels. In some coastal cities repeater owners do just that because of maritime interference. 

Posted
2 hours ago, cbailey said:

Do ALL GMRS repeaters have a +5 offset?

All FCC allocated channel pairs between 450-470 MHz are paired with a 5 MHz spread with the higher frequency of the pair is the mobile transmit (Repeater Station Receive) and channel pairs between 470-520 MHz have a 3 MHz spread.

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