Im kind of shocked to see the resistance to using these things. I cant imagine having communication devices could be considered as difficult or confusing as some here make it seem. Heck, I give my 6 yr old a walkie talkie and he can figure it out just fine.
Kill the clock as normal, push your radio button.
B: "Hey guys, I've got a facemask here at the end of the play"
R: "Ok, TxMike got it. Who did you get and where is the spot?"
B: "Number 34, white. End of the run, the B43. Enforce 15 yards, itll be 1st at the B28."
R: "Got it, thanks"
R makes his usual signals and announcement, U marks it off, play on.