325 - SRU104 - LCN vs CC Only Trunked Systems

325 - SRU104 - LCN vs CC Only Trunked Systems

Author: Phil Lichtenberger November 11, 2025 Duration: 12:09

 

There are two distinct flavors of trunked radio systems that we need to be aware of when programming our scanners.

There are systems that require that every frequency for each site be programmed into their pre-determined channel number, and those that do not.

Systems that require every frequency be programmed into our scanners in their designated sequence are Logical Channel Numbered systems and include EDACS, LTR, and all flavors of DMR.

Control channel only systems only require the control channels to be programmed into our scanners, as those systems have a predetermined channel mapping as part of their system protocol.   These systems include Motorola Type II systems and P25 Trunked systems.

However, don't let "Control Channel Only" fool you.  There is a best practice that you should be aware of that most miss when programming your scanners.  We cover that and more in this week's podcast.

 

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All session notes with links to the items we talked about can be found on our website at https://www.scannerschool.com/session325

#podcast

 


Ever wondered about the distant voices crackling over a police band or the chatter between air traffic controllers? Scanner School is for the curious. Hosted by Phil Lichtenberger, this exploration digs into the nuances of monitoring public safety and utility communications, transforming a technical hobby into a accessible and fascinating pastime. Rather than just listing equipment, episodes unpack the how and why-the stories behind the signals. You’ll hear practical advice on choosing a scanner, decoding technical jargon, and understanding radio protocols, all explained without assuming prior expertise. The discussion often extends to the ethics and laws surrounding the hobby, providing a thoughtful framework for listeners. Newcomers will find a clear path forward, while seasoned enthusiasts discover deeper layers to their interest. It’s a weekly dose of clarity and discovery, where specific listener questions shape the conversation, moving from basic concepts to more intricate details. Tune in to this podcast for a guided tour through a world of sound most people walk right past, and you might just find yourself listening to your surroundings in a completely new way.
Author: Language: English Episodes: 100

Scanner School - Everything you wanted to know about the Scanner Radio Hobby
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Every month I answer your questions on the podcast. If you have a question you would like me to answer, please leave me a voicemail at 516-308-2885 or by visiting www.scannerschool.com/ask Don't forget to join us on YouT…