The WiFi HaLow connections will likely flood the 915mhz band and impact our much lower bandwidth LoRa connections. While I'm also interested in how WiFi HaLow can serve public safety and emergency communications, I worry about what will happen to this spectrum when commercial interests run with it. Hopefully we'll see more spectrum for similar use cases.
So MeshTastic and MeshCore...
I'm the director for the City of Bloomington, AUXCOMM Emergency Communications Unit. Last year I built a cache of Meshtastic units: 10 devices assigned to the 'red' team and another 10 available for the 'blue' team. For the SummerFet event on July 3rd each year, I deploy volunteers throughout the Normadale park area. We issued each person a meshtastic node and collected GPS positions from all our members. We created a separate encrypted channel and enabled location polling. And, I loved knowing that I had a reasonably secure method to communicate information using part 97 devices that could be issued to anyone, without concern for their license status. If I needed to log, report, or share PII information, medical information, or contact information, I had high confidence only authorized people had access to the info. We took all of our ICS214 notes as text messages on our group channel. This immediately created a distributed log of our activity that was visible to all team members.
We used DMR direct simplex for our primary radio comms.Whomever was taking a shift at our dispatch net control position also noted voice communication summaries to the private encrypted group text channel on Meshtastic. I loved it! It was so very nice to know that information was being logged, timestamped, visible, secure, highly available, and independent of any outside infrastructure. Every team member had a full copy of our activity that night. If or when there was 'sensitive' information, I had the ability to message a single person discreetly.
At the moment, I'm preparing a CAD (Computer Aided Dispatch) application that we'll use on a laptop, and it's cloud primarily, unless we lose Internet access. We'll have a radio interface, a web interface for entering and reviewing details, and I've vibe coded an application capable of transcribing our radio communications and logging this information. A message routing rules engine will allow the automatic generation of messages to our Meshtastic channel.
Meshtastic works quite well for dynamic on-scene, digital, lowspeed communications. The message repeating and broadcasting ensures we get signals behind trees and inside buildings.
For a more reliable long distance communications protocol, I've started an effort to use Mesh Core. They handle broadcasting and node to node routing quite differently.
My CAD application can function as a bridge between the protocols.
Here's a screenshot as a teaser. The app "MeshBridge" is designed to operate from laptops or Raspberry Pis in the field to bring access points closer to the action. They collect all radio air information, hold the data in a cache if needed and submit the traffic to the CAD broker or the backup in the event the broker is unreachable. The core system tracks latency and coverage and selects the best MeshBridge node for handling any replies.