The Rocky Mountain Radio League, Inc. owns and operates ten repeaters at sites along the Front Range of Colorado to serve its membership. All of the repeaters are based on a standard design employing General Electric MASTR II exciters, power amplifiers, and receivers, and S-COM Industries controllers. The design allows components to be exchanged between repeaters and a spare inventory the club maintains. A defective component can be easily 'swapped out', minimizing repeater downtime and eliminating the need for on-site repairs under adverse conditions.

Certain of the RMRL repeaters offer special features. The 145.340 machine is a node in the Internet Radio Linking Project (IRLP) network. This repeater can be linked to other repeaters around the world via the Internet. The 449.750 machine is the club’s experimental repeater, and also provides digital paging capability. The 449.825 repeater is linked full time to the 146.940 machine, extending it’s coverage into Boulder and other "shadowed" areas. The 449.875 machine has an emergency locater transmitter (ELT) receiver which alerts listeners of potentially downed aircraft.

The 70 cm repeaters require a 103.5 Hz CTCSS tone for access. The 2 meter and 220 MHz repeaters normally don't require CTCSS but may if interference is being received. Using the CTCSS tone will bypass a 1-second transmit delay that is programmed into each repeater's controller. The repeaters also transmit the 103.5 Hz CTCSS tone. If your receiver has CTCSS decode, you can utilize this feature to reduce intermod and noise between repeater transmissions.

The 145.220 and 224.000 MHz repeaters have autopatch capability