325 - SRU104 - LCN vs CC Only Trunked Systems

325 - SRU104 - LCN vs CC Only Trunked Systems

From Scanner School - Everything you wanted to know about the Scanner Radio Hobby by Phil Lichtenberger

November 11, 2025 · 12 min · Episode 325

About this episode

This episode discusses the differences between Logical Channel Numbered systems and Control Channel Only systems in trunked radio programming.

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. ==================================== 🛒 Check out our new Merch! ==================================== Squelchy opened his own store selling Scanner School merchandise! Show your love for the Scanner Radio Hobby and Scanner School. Pick up a hat, shirt, bag, or mug and help support Scanner School…

People in this episode

Host: Phil Lichtenberger

Topics covered

  • trunked radio systems
  • scanner programming
  • control channel only systems
  • Logical Channel Numbering
  • best practices

Keywords

  • trunked systems
  • scanner radio
  • programming scanners
  • control channels
  • EDACS
  • LTR
  • DMR
  • Motorola Type II
  • P25 Trunked

Mentioned in this episode

Organizations: Scanner School, EDACS, LTR, DMR, Motorola, P25

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