Repeater listings will always show the repeater's output frequency. Repeaters are usually set up with standard input frequency offsets as shown in the table below. If a repeater does not conform to the standard, the non-standard input frequency will be indicated in the listing.
Repeater
Output Frequency
Repeater Input Frequency Offset
51-52
- 0.5 MHz
52-54
- 1.0 MHz
144.51-144.89
+ 0.6 MHz
145.11-145.49
- 0.6 MHz
146.0-146.39
+0.6 MHz
146.61-147.0
-0.6 MHz
147.0-147.39
+0.6 MHz
147.6-147.99
-0.6 MHz
223-225
- 1.6 MHz
440-445
+ 5.0 MHz
445-450
- 5.0 MHz
918-922
-12 MHz
927-928
-25 MHz
For example: If you listen to a repeater on 146.73 you must transmit on 146.13
Standard Repeater Offsets
Most modern transceivers will automatically make the correct offset if they are set to "Auto Repeater" or "Duplex" depending on the terminology used by the manufacturer.