Bill had noted that many of today's new hams were having difficulty with some of the terms and procedures of repeater use. To this end we present this guide with the hope that it is easy to understand and answers your questions without dwelling on the many technical details. Repeaters usually enjoy the advantage of height and power to extend the range of your transmission.
Repeaters listen on one frequency and transmit on another.
The separation between these two frequencies is referred to as the Offset. In order to listen and transmit at the same time, repeaters use two different frequencies. This is referred to as a negative offset. If the output is above 147 Mhz then the input is 600 kilohertz above. This is referred to as a positive offset.