I would like to suggest a added feature to the in game radios.

An emergency frequency that players cannot talk on but can listen to distress calls from crashing helis or maybe get a warning about a incoming gas zone or it could have other implementations with the other dynamic events (current and future.....).

For the Heli crashes if it is a NATO Heli an American or British voice would be heard (obviously adding voice lines might be a challenge) saying something like mayday we are going down near (insert town name)
Same for the Russian Heli variants but with Russian language making it harder for English speakers to find.

As for the gas zones maybe a couple warning beeps then followed by Morse code of the landing co-ordinates of the gas zone.
That would make pin pointing the gas landing a challenge that requires the knowledge of Morse code which would be pretty fun and if not just immersive.

As for other future additions to dynamic events for example if supply drops were a future feature we could maybe hear an AI sounding female voice saying "a supply drop has been deployed to …..(insert x and y co-ordinates).

you could also play a intermittent message in a AI mans voice (say every 3 minutes) that says "this is the emergency broadcast channel stand by for instructions" and then repeat it in Russian.
This would make leaving your radio on a risk/reward situation as players nearby would also hear this coming from your radio.

All in all I think this feature would do wonders for world building it would also draw players to dynamic events making interaction and pvp around these events much more common
finally I also think this would be a great reason to pick up and use a radio more as often players don't use radios if more players are using them to listen to the emergency channel then maybe more will also use the communication features as well.