Quick Answer
Most Common GMRS Radio Frequencies Used is typically those designated by the Federal Communications Commission (FCC) as part of the General Mobile Radio Service (GMRS) band, specifically around 462 and 467 MHz.
GMRS Frequency Range and Channels
The GMRS band consists of 22 channels, including repeater input and output channels, as well as a 38 kHz deviation for narrowband and wideband channels. GMRS users must follow the FCC’s rules for channel usage and power limits. In the US, GMRS channels 1-22 are assigned in the 462-467 MHz range.
Understanding Channel Usage and Power Limits
GMRS users must adhere to specific power limits, which vary depending on the channel and antenna gain. For example, users on repeater input channels must reduce their power output by 20 dBm, while users on repeater output channels must adhere to a maximum power output of 5 watts. Additionally, users must not exceed the maximum antenna gain of 6 dBi.
Setting Up Your GMRS Radio
To use your GMRS radio effectively, you must first identify and select the correct channel for your location and purpose. Typically, users start by selecting a channel that has a strong signal and is not heavily used by other users. Next, adjust your radio’s power output and antenna gain to comply with FCC regulations. This will ensure that you operate your GMRS radio safely and in accordance with the law.
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