The New Official Home of CRRG

The New Official Home of CRRG


The Castle Rock Repeater Group is an amateur radio club based in Denver, Colorado. Originally founded in the 1960s, but organized in its current form in 1993, the CRRG has members throughout the Colorado Front Range and beyond.

We are a non-profit corporation registered with the State of Colorado. We operate three repeaters in the Denver metro area. Please join us for our weekly Sunday evening net at 7:00pm (1900) Mountain Time on our primary repeater at 146.670- MHz with a 100 Hz PL tone.

This is the official new home of Castle Rock Repeater Group. and are former URLs of the club.

Visit us on Facebook at Castle Rock Repeater Group or join us on Telegram.

What's New With CRRG?

Field Day 2024

June 21st – 23rd 2024

Where is it?

Please Register for a stay as soon as possible at:

Denver East / Strasburg KOA Holiday
1312 Monroe Street
Strasburg , CO 80136


  • June 21st
    6:00 PM – Meet and greet in KOA meeting room.
  • June 22nd
    12:00 PM – Operating Begins
    4:00 – 6:00 PM – Potluck Dinner
    6:30 PM – Night Operating Begins
  • June 23rd
    7:00 AM – 9:00 AM – Breakfast & Exit Meeting

What is this event about?

Every year Colorado Amateur Radio or Ham Radio people go out and setup radios they have prepared to work in the field. It is always the last weekend of June so this year CARBBN and Colorado Ready are teaming up for a Preparedness Field Day event. Meaning that if you want to camp and test your outdoor preparedness along with learn something about basic Medical preparedness please join us.

What is Amateur Radio?

Often called “ham radio,” the Amateur Radio Service has been around for a century. In that time, it’s grown into a worldwide community of licensed operators using the airwaves with every conceivable means of communications technology. Its people range in age from youngsters to grandparents. Even rocket scientists and a rock star or two are in the ham ranks. Most, however, are just normal folks like you and me who enjoy learning and being able to transmit voice, data and pictures through the air to unusual places, both near and far, without depending on commercial systems.

Communications Plan

On-Site Communications
C4FM Simplex: 446.250MHz DG-ID: 06

Wide Area
FM: CRRG Repeater, Mestaa’ėhehe Mountain, 146.670MHz (-) 100Hz CTCSS

APRS Messaging: 144.390MHz (KE0NVB and AC0XW will be monitored)
Meshtastic: (provided on-site)

Digital Learning Net

Join KE0DC and W0SUN for the Digital Learning Net.
It’s held on the “DMR 31088 COLORADO-HD” or Reflector XLX303 Module D
Wednesdays at 7:00pm MDT .
The Digital Learning Net is usually about 1.5 hours.

visit  → for all the details

Immediately following the Net, join us for “HD Happy Hour “ on COLORADO-HD (HD is Hotspot Discussion)