While the script adds TFAR backpacks to the random loot pool, it would be awesome to have some short range devices for every player. To add them to the Box, you need to add a line to a sqf file:

<mission_root>\bulwark\createBase.sqf
Line 36: bulwarkBox addItemCargoGlobal ["TFAR_anprc152",20];

I think 2 radios per player are sufficient in case your corpse despawn and thus the radio will be lost. On the other side the LR backpacks are included in the loot spawn pool. So you could leave it like this to increase difficulty for the players.