DMR on LICENSE

[jimg]

Where on the FCC license does it show if the system is DMR, NXDN, and so on?
jimg

 

[jaspence]

You wouldn't expect to find something easy on a government document. Types of radio emissions - Wikipedia

 

[sonm10]

When looking for emission codes I like to use the actual fcc site
Clicking on the fcc license in rr will take you to fcc site
At the top you have a list of tabs including frequencies. Click on the frequency tab. At the far right for each frequency you see a bunch of tabs that include emission click on emission. The rr wiki has an emission code page to look up codes. I believe anything starting with 7k is dmr

 

[jimg]

Thanks very much for your help!
jimg

 

[nd5y]

Emission Designator - The RadioReference Wiki

wiki.radioreference.com

7Kxx indicates a bandwidth of 7.xx kHz.
That doesn't mean everything with 7 kHz bandwidth is DMR.

 

[n5ims]

Just be aware that even in the official FCC database the emission codes may or may not tell you what is actually in use. The codes listed are what is authorized for use under that license on that frequency. Some licenses will list many codes (mostly so they could demo them legally using their own sites) while others list very few (and may not list the code they actually use). Often they were sold one of the digital modes and got the radios and infrastructure but never bothered to update their license (yes it's not fully legal, but they probably don't know that). Others have their license updated for the mode that they actually use, but kept their old mode(s) on the license so they could use the old radios as a backup.

Much of this with the modes not reflecting what is actually in use can be put down to the company managements not wanting to spend money on things that don't appear at first glance to be important. Consultants that understand the FCC rules, licensing, and emission codes are often expensive and until the company gets a NAL for using their radios in a manner that doesn't match their license that cost doesn't appear to be worth it. The companies that have the communications roles moved into the IT departments often let go anyone that understands what the various emission modes are and when they should be applied. They typically just understand that their manager says to move department A to digital radios since we don't want them picked up on a scanner, so they buy digital radios and program them for their current frequencies and call it a day without thinking about licensing issues.