can confirm, i was finally able to get the radio by turning the radio on and off rapidly because i realized that the on/off options are flipped. after making sure the radio says "press F to turn off" dropping the radio on the floor and equiping it off the floor seems to inconsistantly work. had to do it like 5 times for it to magically decide to work. hopefully this gets fixed soon because gosh it is annoying to have to deal with...

I dont have access to a Windows PC so I can't confirm.

i am unsure, ive only picked up the game a few days ago so im not really sure what that is, me and a friend were playing combat ops - everon which spawns you with radios. I was able to hear them when they talked on the radio so i suppose we were within range of a re-transmitter. i did the dropping/picking up and turning off/on since i saw that as a potential fix online and that didnt seem to do anything, i even traded radios with my friend to see but same result.

yes it still persists with a restart