We are in the process of adding AVL to our portable VHF system which consists of a number of portables, mobiles and repeaters. There are mix of NX-3200's and 5700's. The domain specific mapping system we use does not support polling at least at the present time so we have to set up a timed ( or distance change) Tx of GPS position.
Depending on where and how/where we deploy and what is available for frequency assignments we could end up with a single simplex frequency or multiple simplex frequencies available or repeater assignment(s) and of talk-around or mix there of. We should generally be able to operate DMR but may have to operate analog FM.
I am trying to figure out best way to implement AVL. Ideally we would like to use DMR and have one TS for voice and the other for GPS data either on a single simplex or repeater scenario. But as mentioned we may just have to operate on an analog FM frequency.
Just wonder what approaches and rules of thumb folks use for number of subs vs GPS beacon rate when having to co-exist with the voice talk-path or alternatively, have a clear TS or revert channel for the GPS data?
Can we use the auto slot selection for both voice call and data call when using the NXR-1700 repeater to trunk all transmissions?
If running Fleetsync on the same analog channel as voice, whats best practice here? Do I put the data revert on a separate PL from the voice traffic to keep the data traffic from annoying the voice users?
Any gotcha's we want to look out for?
thanks
Peter
Depending on where and how/where we deploy and what is available for frequency assignments we could end up with a single simplex frequency or multiple simplex frequencies available or repeater assignment(s) and of talk-around or mix there of. We should generally be able to operate DMR but may have to operate analog FM.
I am trying to figure out best way to implement AVL. Ideally we would like to use DMR and have one TS for voice and the other for GPS data either on a single simplex or repeater scenario. But as mentioned we may just have to operate on an analog FM frequency.
Just wonder what approaches and rules of thumb folks use for number of subs vs GPS beacon rate when having to co-exist with the voice talk-path or alternatively, have a clear TS or revert channel for the GPS data?
Can we use the auto slot selection for both voice call and data call when using the NXR-1700 repeater to trunk all transmissions?
If running Fleetsync on the same analog channel as voice, whats best practice here? Do I put the data revert on a separate PL from the voice traffic to keep the data traffic from annoying the voice users?
Any gotcha's we want to look out for?
thanks
Peter
