Technician: 2 Meter Repeater Offset

What is the most common repeater frequency offset in the 2 meter band? [T2A01]

A. Plus 500 kHz
B. Plus or minus 600 kHz
C. Minus 500 kHz
D. Only plus 600 kHz

The answer is B. Plus or minus 600 kHz.  Recall that the frequency offset is the difference between the repeater’s input frequency, and its output frequency.  You transmit from your radio on the repeater input frequency, and you will hear the signal on the repeater output frequency.  Whether that input frequency is 600 kHz higher or lower than the output is dependent on where in the 2m band it lies (by convention), and the particular whim of the repeater operator.  Some, like D-STAR repeaters, may use non-standard offsets.  Some will use other offsets just to be different.

For example, a local repeater’s output frequency is 146.91 MHz, and its input is 146.31Mhz.  A difference of .6 Mhz, or 600 kHz.

In any case the accepted standard 2 meter repeater offset is 600 kHz.

(Photo: https://commons.wikimedia.org/wiki/File:SK7MQ_Repeater_Tower.jpg)

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