I don’t want to try and give an electronics class but AM is Amplitude Modulation, FM is Frequency Modulation. You can look up the difference. Also CB is around 27 MHZ, FRS/GMRS is around 467 MHZ. I believe that the Australian CB frequency is close to the FRS/GMRS frequencies.
I have 2 meter Ham and GMRS in my truck. Unless I’m in a group traveling I stay with the simplex calling frequencies for each. Once I’m in a group we change to another frequency. Mostly from then on it’s mostly GMRS because people don’t want to study for the test. Plus ham radios can get...
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