Please excuse me if I'm at the wrong place for this, I did not find anything suitable to this question.
Here the case:
We are about to setup a Radio Network with 1 permanent static repeater (RD985S).
We have planned 3 additional repeaters for mobiel use depending on events (mainly sport events that cover over 100s of km).
We planned to use Hytera RD985S repeaters (the first 1 arrived yesterday).
We want the users with their devices (Mobile & Portable) to communicate with other subscribers where ever they are independently on which repeater. The repeaters will be IP connected through the GSM network.
We will use up to 6 groups. We currently have 2 permanent UHF frequencies for Digital (DMR) use. Any additional frequency will be acquired temporarly based on events' needs.
Number of final subscribers starts with 30 onwards and no limit.
The question is:
What is the best use and best practice to avoid subscribers to change channels when they get out of range from a repeater and get into the range of the next repeater. I heard about the roaming function. How does this work? Do I need different frequencies for each repeater to avoid overlapping?
Is it an option (good or bad) to have more than 1 repeater per location? What about XPT & Tier III use in this case, usefull?
I also need to say, that for the 1st repeater the Frequencies will be permanent. For the other 3 repeaters, we will get new temporary frequencies every time we need them for an event. They may be the same, but this is not garanteed.
The system needs to be expendable as much as possible, so we are open to any upgradable solution, reason for the RD985S as this is Tier III compatible.
Thank you in advance for any help and suggestions