MMDVM Hat for Pi-4B

[W5DMD]

I have a Pi-4B. I wish to use it to make a DMR Hot Spot at my home QTH. All the hats I have found on line say not compatible with Pi-4. So is there a Hat that IS compatible? If not I guess I need to wait in line for a Pi-3 or lower. Thanks

[KN2TOD]

I've seen that posted for a number of hat's but I take it with a grain of salt: basically, there's no explanation of what exactly prevents it from being used, let along tried, on Pi 4's. I've installed several such hats on Pi 4's and have not had any problems ... operationally. Installing/mounting them in various cases may present problems, not that's not a problem peculiar to Pi'4s per se.