The first step is to create a Group Call Digital Contact with ID 99. Then select that Contact in the Contact name dropdown in the Channels Information dialog.Thanks guys. Where is the Talkgroup setting in the programming software?
Hi, I have 2 DMR MD390 radios, but don't have a DMR repeater in my area. Can these radios talk to each other in DMR mode or do you need a repeater that supports DMR?
On the cheaper radios, this is true. But with Gen 2 Moto radios using current FW, It works properly. You can have 4 7550's, all on the same simplex freq. 2 set to TS1, & 2 set to TS2. 2 separate conversations at the same time on the same freq.Create a group contact using talkgroup ID 99 and then assign that to the channel.
Note: From what I've found, the timeslot is not significant when using DMR simplex. I've tested with one radio programmed on slot 1, and another on slot 2 and they still talked to each other
Interesting. I wonder how they control TDMA Timeslot Sync without a repeater.On the cheaper radios, this is true. But with Gen 2 Moto radios using current FW, It works properly. You can have 4 7550's, all on the same simplex freq. 2 set to TS1, & 2 set to TS2. 2 separate conversations at the same time on the same freq.
The Dual Capacity Direct Mode (DCDM) feature supports two simultaneous subscriber transmissions within a 12.5 kHz channel bandwidth for Direct Mode transmissions. The radios within the same group must use the same timeslot so that the group using timeslot 1 does not interfere with the group using timeslot 2. For proper operation, the radios need to identify and track the timeslot structure. A unique radio is elected as a channel timing leader. The other radios adjust their clocks to synchronize as possible with the channel timing leader.