DMR cap

[vocoder]

When the fcc lists a set of dmr cap frequencies as trunked, does this mean the set has to have a dedicated control frequency?

Or just tier 3 have a dedicated control frequency?

Can a dmr cap system operate without a dedicated control frequency and use maybe a slot as control?
Thanks

 

[RayAir]

When the fcc lists a set of dmr cap frequencies as trunked, does this mean the set has to have a dedicated control frequency?

Or just tier 3 have a dedicated control frequency?

Can a dmr cap system operate without a dedicated control frequency and use maybe a slot as control?
Thanks

What do you mean by "DMR cap"? If its Capacity Plus it doesn't have a dedicated control channel.
It uses a rest channel which basically transmits an intermittent data burst. The rest channel will change once two transmissions occur on said channel.

Hytera eXtended Pseudo Trunk is also similar to Capacity Plus.

Capacity Max, Tier 3, and Connect Plus use dedicated control channels.

 

[INDY72]

And there is NO way to know from FCC data what format of trunking a system uses with LTR, NXDN, or DMR. All the FCC data shows is it is trunked, and if it has NXDN, Analog, or DMR emissions. Only way to know is by use of an scanner, or SDR and DSD+, or DMRDecode etc...

With analog you can guess its LTR,.. BUT: Is it what we call standard LTR, is it Multinet, or PassPort... Or a mix? With NXDN, is it iDAS, or NexEDGE? With DMR, is it Connect Plus, Capacity Plus, or one of the Tier 3 systems?