The type of gear deployed is rather pointless.
The real trick is that everybody and I mean the whole of the population involved needs to exercise some very serious operational discipline on the comm gear. If not then any system will overload and crash.
If and when you get some air time it will not last so save the crying, kissing and the “I love you honey” for later. Everybody else is trying to do the same. Cell phone, FRS or HAM doesn’t matter. Their is only a limited amount of bandwidth to go around.
Keep it short.
Keep it simple.
Use very simple language and enunciate strongly.
pre-arranged code words and rally points are critical.
If Jack D. Ripper can launch WWIII with POE or was it EOP? you can have a pre-arranged code word or 2 yourself.
The time to talk to the clan about what you gonna do is now not when it happens.
Alas Babylon! ping...