IRG operates four repeaters, providing 2 meter and 70 centimeter service in the Denver, CO metropolitan area. We also have a portable repeater available for special events and emergency communication.

Frequency Offset Access Location Notes
145.280 -600KHz 100Hz Centennial Cone Linked to 449.525
145.475 -600KHz 100Hz Blue Mountain
447.625 -5MHz 100Hz N. of Lochbuie 20 Watts
449.525 -5MHz Centennial Cone Linked to 145.280
146.835 -600Hz 100Hz Portable

Blue Mountain Site

The Blue Mountain repeater site is about halfway between Golden, CO and Boulder, CO, near the intersection of Foothills Parkway and Highway 72, at 8100 ft. elevation. We get pretty good coverage, with good signal reports NE to Eaton, CO. We don’t, at the moment, have a good idea on coverage East and SE, but we are reaching Castle Rock for sure.

Here are some photos from our Blue Mountain repair work.

Centennial Cone Site

The Centennial Cone Site is located near Centennial Cone Park, in Jefferson County Colorado, North of Highway 6 and West of Golden, CO. The Denver Radio League has some nice pictures of the tower.