RMRL MEMBERSHIP INFORMATION
Dear Prospective Member,
Thank you for your interest in the Rocky Mountain Radio League (RMRL).
The RMRL is a Denver-based amateur radio club that emphasizes VHF and UHF repeater operation. We are affiliated with the American
Radio Relay League. Members are located up and down the Front Range from Cheyenne to Colorado Springs. Membership
fluctuates around 350. Activities include furnishing communications coverage for civic events, emergencies and a severe storm-warning
network to assist the National Weather Service. Social events include a holiday dinner and hamfest each year.
The club owns and operates four 2 meter repeaters (145.220, 145.340, 145.430 and 146.940 MHz), one 1.25 meter repeater (224.000 MHz),
and five 70 cm repeaters (449.125, 449.450, 449.750, 449.825, and 449.875 MHz) which serve the Colorado Front Range. All of the repeaters
except 449.825 are located at mountaintop sites near Boulder, Golden, Idaho Springs, Evergreen, and Sedalia. Elevation at the sites ranges
from 8,300 to 11,440 feet. The 449.825 MHz machine is located near Broomfield at approximately 5,600 feet.
- 145.220 provides excellent HT (handheld radio) coverage throughout the metro area. It also supports the APCO-25 standard for digital audio.
- 145.220 and 224.000 have an autopatch available to members.
- 145.340 is Node 3350 on the Internet Radio Linking Project (IRLP) network, and may be linked to other repeaters around the world
using voice-over-IP technology on the Internet.
- 145.430 provides good coverage of both Denver and Boulder, and is node 7981 on the IRLP network.
- 146.940 and 449.450 are wide area coverage machines reaching Cheyenne to the north, Colorado Springs and Pueblo to the south, a wide
area of the eastern plains, and west to the Continental Divide.
- 449.125 provides excellent coverage of the Rampart Range area southwest of Denver.
- 449.750 is used for experimental and test purposes, and also provides digital amateur paging for members.
- 449.825 is linked full time to the 146.940 repeater, extending its coverage into Boulder and other “shadowed” areas.
- 449.875 MHz has an aircraft emergency locator transmitter (ELT) receiver that alerts users to potentially downed aircraft.
We also have a balloon-flyable repeater with a receive frequency of 445.975 MHz and a transmit frequency of 147.555 MHz. This machine
is available for use by members upon request.
ALL RMRL repeaters require a 103.5 Hz CTCSS tone for access. The repeaters also
transmit either a 103.5 Hz or a 127.3 Hz CTCSS tone. If your receiver has CTCSS decode, you can utilize this feature to reduce
intermod and noise between repeater transmissions. The 449.750 MHz repeater also requires DTMF access due to its experimental nature.
The RMRL uses all commercial equipment (GE MASTR II repeaters and S-COM controllers). New state-of-the-art equipment is added from
time to time. Down time on any one unit is short due to excellent technical support. Control operators monitor the frequencies to provide
orderly and authorized use of the equipment and frequencies.
We have an on the air meeting each Monday evening at 8:30 PM local time on the 146.940, 449.450, and 449.825 repeaters. The club also
intermittently publishes a newsletter called the QRZ, which is available via e-mail and on the club’s website. A roster listing
the call letters, address and phone number of each member is distributed annually.
A family membership is $20.00 annually and covers all amateurs in your household, including students away from home who claim
the parents’ address. There is also a youth individual membership for $5.00 per year, which is available to amateurs 15 years
old and younger whose parents are not RMRL members. The RMRL is a 501(c)(3) non-profit organization and contributions are tax deductible.
On behalf of the membership of the RMRL, I invite you to join our group. We would welcome your participation in and support of our activities.
Michael Weaver, KA6YFB
View/Print the RMRL Membership Application