Frequency Chart
The "Friendly Name" of a frequency is the portion of the frequency to the right of the decimal (the kHz portion).
This first set of frequencies shows the split frequency pairs used in duplex operational mode, often used with repeaters. Simplex (same frequency for receiving and transmitting) mode only utilizes the lower set of frequencies.
All channels are used with narrow-band frequency modulation.
| Name | Lower frequency (repeater output) (MHz) | Upper frequency (repeater input) (MHz) | Motorola convention | Icom F21-GM convention | Notes |
|---|---|---|---|---|---|
| "550" | 462.550 | 467.550 | Ch. 15 | Ch. 1 | |
| "575" | 462.575 | 467.575 | Ch. 16 | Ch. 2 | |
| "600" | 462.600 | 467.600 | Ch. 17 | Ch. 3 | |
| "625" | 462.625 | 467.625 | Ch. 18 | Ch. 4 | |
| "650" | 462.650 | 467.650 | Ch. 19 | Ch. 5 | Use not permitted near the Canadian border. |
| "675" | 462.675 | 467.675 | Ch. 20 | Ch. 6 | Suggested nationwide emergency and road information calling. Nationally recognized coded squelch for 675 emergency repeater operation is 141.3 Hz. |
| "700" | 462.700 | 467.700 | Ch. 21 | Ch. 7 | Use not permitted near the Canadian border. |
| "725" | 462.725 | 467.725 | Ch. 22 | Ch. 8 |
This second set of frequencies shows the interstitial ranges shared with the Family Radio Service services. These frequencies can only be used for simplex operations.
| Name | Frequency (MHz) | Motorola convention | Icom F21-GM convention | Notes |
|---|---|---|---|---|
| "5625" or "FRS 1" | 462.5625 | Ch. 1 | Ch. 9 | |
| "5875" or "FRS 2" | 462.5875 | Ch. 2 | Ch. 10 | |
| "6125" or "FRS 3" | 462.6125 | Ch. 3 | Ch. 11 | |
| "6375" or "FRS 4" | 462.6375 | Ch. 4 | Ch. 12 | |
| "6625" or "FRS 5" | 462.6625 | Ch. 5 | Ch. 13 | |
| "6875" or "FRS 6" | 462.6875 | Ch. 6 | Ch. 14 | |
| "7125" or "FRS 7" | 462.7125 | Ch. 7 | Ch. 15 |
Read more about this topic: General Mobile Radio Service
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