Designed to replace AI's intercoms. Integrated headset-like device which has access to all department frequencies. Also let's AIs use radio on intellicard.

AI's communication can however be disabled by using intellicard option. Communication will be disabled until it is restored via intellicard again,
even if the AI is moved back into physical core. ICly it's software lock which prevents the AI from using communication circuits which are standard in all
AI cores/intellicards/etc. This does not stop AI from using intercom, however.

 Forum link: http://baystation12.net/forums/viewtopic.php?f=5&t=6536&start=1260

code/game/objects/items/devices/aicard.dm

@@ -71,6 +71,10 @@
 				dat += "<br>"
 				dat += {"<a href='byond://?src=\ref[src];choice=Wireless'>[A.control_disabled ? "Enable" : "Disable"] Wireless Activity</a>"}
 				dat += "<br>"
+				dat += "Subspace Transceiver is: [A.aiRadio.disabledAi ? "Disabled" : "Enabled"]"
+				dat += "<br>"
+				dat += {"<a href='byond://?src=\ref[src];choice=Radio'>[A.aiRadio.disabledAi ? "Enable" : "Disable"] Subspace Transceiver</a>"}
+				dat += "<br>"
 				dat += {"<a href='byond://?src=\ref[src];choice=Close'> Close</a>"}
 		user << browse(dat, "window=aicard")
 		onclose(user, "aicard")
@@ -92,6 +96,12 @@
 				U.unset_machine()
 				return
 
+			if ("Radio")
+				for(var/mob/living/silicon/ai/A in src)
+					A.aiRadio.disabledAi = !A.aiRadio.disabledAi
+					A << "Your Subspace Transceiver has been: [A.aiRadio.disabledAi ? "disabled" : "enabled"]"
+					U << "You [A.aiRadio.disabledAi ? "Disable" : "Enable"] the AI's Subspace Transceiver"
+
 			if ("Wipe")
 				var/confirm = alert("Are you sure you want to wipe this card's memory? This cannot be undone once started.", "Confirm Wipe", "Yes", "No")
 				if(confirm == "Yes")

code/game/objects/items/devices/radio/encryptionkey.dm

@@ -74,6 +74,12 @@
 	icon_state = "cap_cypherkey"
 	channels = list("Command" = 1, "Security" = 1, "Engineering" = 0, "Science" = 0, "Medical" = 0, "Supply" = 0)
 
+/obj/item/device/encryptionkey/heads/ai_integrated
+	name = "AI Integrated Encryption Key"
+	desc = "Integrated encryption key"
+	icon_state = "cap_cypherkey"
+	channels = list("Command" = 1, "Security" = 1, "Engineering" = 1, "Science" = 1, "Medical" = 1, "Supply" = 1)
+
 /obj/item/device/encryptionkey/heads/rd
 	name = "Research Director's Encryption Key"
 	desc = "An encyption key for a radio headset.  Contains cypherkeys."

code/game/objects/items/devices/radio/headset.dm

@@ -19,7 +19,9 @@
 	keyslot1 = new /obj/item/device/encryptionkey/
 	recalculateChannels()
 
-/obj/item/device/radio/headset/receive_range(freq, level)
+/obj/item/device/radio/headset/receive_range(freq, level, aiOverride = 0)
+	if (aiOverride)
+		return ..(freq, level)
 	if(ishuman(src.loc))
 		var/mob/living/carbon/human/H = src.loc
 		if(H.l_ear == src || H.r_ear == src)
@@ -99,6 +101,20 @@
 	item_state = "headset"
 	keyslot2 = new /obj/item/device/encryptionkey/heads/captain
 
+/obj/item/device/radio/headset/heads/ai_integrated //No need to care about icons, it should be hidden inside the AI anyway.
+	name = "AI Subspace Transceiver"
+	desc = "Integrated AI radio transceiver."
+	icon_state = "ai_radio"
+	item_state = "headset"
+	keyslot2 = new /obj/item/device/encryptionkey/heads/ai_integrated
+	var/myAi = null    // Atlantis: Reference back to the AI which has this radio.
+	var/disabledAi = 0 // Atlantis: Used to manually disable AI's integrated radio via intellicard menu.
+
+/obj/item/device/radio/headset/heads/ai_integrated/receive_range(freq, level)
+	if (disabledAi)
+		return -1 //Transciever Disabled.
+	return ..(freq, level, 1)
+
 /obj/item/device/radio/headset/heads/rd
 	name = "Research Director's headset"
 	desc = "Headset of the researching God. To access the science channel, use :n. For command, use :c."