Inspired by Vertibird Beacon, this is an Edit on Raumfliege's Companion Whistle to make it look and sound like a walkie-talkie in game.

[INTRO]

Q: Did you ever tell your companions to wait, only to have to track back to call them?
Q: Do you companions ever get lost and simply not show up? 
Q: With all that technology lying around, it surely makes sense for you and your companions to be using walkie-talkies, right? 
Q: Do you hate finicking with unimmersive menus?
A: If you answered yes to any or all of these questions, you'll love Companion Beacon!

[HOW TO]

Craft the "Companion Beacon" under "Utilities" section of the chemistry station, requires:
1 Aluminum
1 Copper
1 Circuitry
1 Fusion Cell
Its a reusable "Aid" item, so you can favorite it.

[HOW IT WORKS]

Mostly a simple script that teleports your active companions to you.
If they don't show up, just call again. 
When downed or in combat, they will not come.
They will come to you even if waiting.
I just changed: Models, audio, craft recipe, names. Streamlined installation folder.
All scripts are original, so this completely replaced the original mod.

[COMPATIBILITIES]

Compatible with Everyone's Best Friend, Unlimited Companion Framework and similar mods.
Work with all vanilla or mod added companions. (also any NPC set to follow you will also teleport, like quest specific followers and flare called minutemen with "We are the Minutemen")
Possibly compatible with Companion Whistle, if you want to both radio in your companions and whistle.
If you want to call specific followers, not just the ones set to follow you, I recommend you use Companion Radio instead.