Help Programming Mixed DTR650 and DTR700

For a very simplistic explanation, the DLR radios look for Profile ID numbers to determine radios within its groups; the DTR radios use Group ID numbers. DLR radios dropped private groups because there was really little need for it. (I have never used a single private group.)

In short, I would reprogram the DTRs so they use public groups only. No security issues because you will still have thousands of combinations of hopsets. (“Channels.”) Then you will need to adjust the programming of the DLRs so they look for Public Group ID numbers, instead of individual radio ID numbers. You do this by turning off profile ID number lock in the DLR programming.

Also, your DTR public groups can be channel 1 to channel 10, but your group ID numbers must be from 21 to 100.

Here is a guide to getting the older radios talking to the newer ones: