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The Denver Radio Club, WØTX

Providing Amateur Radio Services for the Denver Area Since 1917.
Denver Colorado, U.S.A.
E-Mail to:
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Happy 100th Birthday Denver Radio Club!

Happy 100 Years Happy 100 Years

The Mountain States Radio Association of Denver was the forerunner of the Denver Radio Club, Inc.
The first election of officers was held on January 19, 1917.

The first President was Donal L. Clark, 9ADH.
Colorado was then a part of District 9, and, at that time, there was no assigned prefix to the calls.

For more history, click on the Club History link to the left.


The Denver Radio Club DRM Repeater
is Now a BrandMeister Repeater

Our DMR repeater is no longer on the DMR-MARC network.
It is now on the BrandMeister Network -- a world-wide digital amateur radio network.

For information about the BrandMeister Network, please to visit the following links: (this is a PDF file)

Also, please read the full article about the change to BrandMeister
in the December 2016 issue of The Roundtable newsletter.

Our next Denver Radio Club Meeting will be on

Wednesday, January, 18th, at 7 pm.

Our meeting presentation topic is:

Game Day Frequency Coordination

Image of SBE Warning to Coordinate Frequencies of all RF devices.
Plaque Displayed at Events Which Require Frequency Coordination

Presented by Jim Schoedler

At sports stadiums, large concerts, and other public venues, there may be literally hundreds of devices transmitting and receiving RF in very close proximity to each other. Preventing, and/or troubleshooting, radio frequency interference is the primary job of the event frequency coordinator.

The NFL uses multiple frequency coordinators, known as Game Day Coordinators, at every football game. Whatever the title, the job starts well before the event with building a database of users and frequencies and finishes when the last use of RF at the event is completed. In between the job requires a variety of people and technical skills.

Jim Schoedler is the Society of Broadcast Engineers' radio frequency coordinator for Denver and the Front Range of Colorado. Jim is also a game day RF coordinator for the NFL Broncos and the Colorado Rockies Baseball Club. In 2008 he was the on-site frequency coordinator for the Democratic National Convention, held at the Pepsi Center. In 2014 and 2015 he was a frequency coordinator at the NFL Super Bowl.

In his talk Jim will discuss the range of frequencies used at a typical venue, the methods used for coordination, the tools used at the venue, and some of the pitfalls and successes he has experienced in his 10 years of performing frequency coordination.

Much more information, and Jim's Bio, is available in the January issue
of the DRC Roundtable Newsletter.

This will be a "Don't Miss" presentation...
please mark your calendars now to attend!

We will be meeting at the Jefferson County Administration & Courts Bldg.
100 Jefferson County Parkway, Golden CO
Hearing Room #2
Coordinates: 39.727962N , -105.201500W
Full details are found in the "Club Meetings" link to the left.


SPECIAL REQUEST regarding Colds and the Flu:
We always like to see every DRC member at every meeting and activity,
but, if you are sick or suspect you may have the Flu, a Cold or other similar ailment ...

Please DO NOT EXPOSE fellow Club members.

This is the time when you should Not Attend the meeting.
Thanks for your understanding.



As every Coloradoan knows, the winter weather can take a sudden change for the worse.
Should that happen the day of our monthly DRC meeting,
listen for meeting status reports on our 145.49 or 448.625 MHz repeaters during the afternoon of the meeting day.




are now streaming on our New DRC YouTube Channel,

where you can view all of Bill Rinker's (W6OAV) Packet Radio Class sessions.

These sessions took 10 weeks for Bill to present in 1992, and they are in-depth.

Although there have been some changes with newer technology,
the majority of the information is still current and very usable.
Image of YouTube Logo Please Click Here to open the DRC YouTube Channel
Image of YouTube Logo


Back Issues of The RoundTable Newsletter are now available on this website.

There is now an index to articles.

For more information and access,
Please Click Here


To read the DRC President's Message from our monthly Club Newsletter, "The RoundTable"...
please click on "President's Message", in the left column.

The complete newsletter, in PDF format, is sent by e-mail to Club members each month.

Are you ready to expand your Amateur Radio horizons?

  • Try the DRC 6 Meter Repeater. 
    Receive it on 53.090 Mhz., transmit to it on 52.090 Mhz., using a 107.2 Hz. access tone
  • Experiment with the 1.25 Meter Band using our 220 Repeater. 
    Receive on 224.380 MHz., transmit on 222.780 MHz., using a 100.0 Hz access tone.
  • And, if you have packet capability --
    Our HF-VHF Packet Gateway will let you work the world on packet through the gateway node WØTX-7.
    Try it at 145.05 Mhz on 2 meters or 14.105 Mhz on 20 meters

These repeaters and the packet gateway (2M side) can be used by all hams with Technician class and above licenses.

They are located west of Denver in Lakewood, providing local metropolitan area coverage -
however, they are not wide area repeaters.

And, remember that our wide area repeater on Squaw Mountain, 449.350, is also an EchoLink® station, number 4140.
Call your out of town ham friends, or have them call you by connecting through their local EchoLink® station or their PC.

Please click on our DRC Repeaters the left column... it has photos showing our EchoLink® repeater location.


Ready for your Ham license?    Time to Upgrade?    Need to find a VE Testing Session?

Please Click Here


New WANTED and/or FOR SALE items have been posted.

Check out our Trading Post page.

Please Click Here


"By failing to prepare, you are preparing to fail." - Benjamin Franklin

Michael Vespoli, KEØHFH; and Brennan Pate, ADØUZ;
are our Emergency Communications Coordinators.

For important information regarding Emergency Communications,
Click on "EmComm Info", in the left column.


For interesting links to other web sites on our Ham Links page, click on "Ham Links", in the left column.

Propagation Information:

Note: some Apple devices do not automatically display the most recent data above.
Please manually reload the page several times, quickly, until recent data is shown.

The Current Greyline Propagation Map:

To update the above information, click on the "Reload" or "Refresh" button on your web browser.

Thanks to NØNBH, and John Walker for providing these images.


The DRC is an American Radio Relay League Special Services Club

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The Denver Radio Club

Since 1917

Now in our 100th Year
of Serving Amateur Radio in the Denver area!


This entire website and all its content is ©2016 by The Denver Radio Club, Denver Colorado, U.S.A.
The Denver Radio Club is an I.R.S. registered 501(c)(3) educational non-profit organization.