Adds Destroys.

code/game/objects/items/devices/PDA/cart.dm

@@ -115,7 +115,9 @@
 	spawn(5)
 		radio = new /obj/item/radio/integrated/signal(src)
 
-
+/obj/item/weapon/cartridge/signal/Destroy()
+	qdel(radio)
+	..()
 
 /obj/item/weapon/cartridge/quartermaster
 	name = "\improper Space Parts & Space Vendors cartridge"

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

@@ -99,6 +99,12 @@
 				post_signal(control_freq, "command", "summon", "active", active, "target", get_turf(PDA) , s_filter = RADIO_SECBOT)
 				post_signal(control_freq, "command", "bot_status", "active", active, s_filter = RADIO_SECBOT)
 
+
+/obj/item/radio/integrated/beepsky/Destroy()
+	if(radio_controller)
+		radio_controller.remove_object(src, control_freq)
+	..()
+
 /obj/item/radio/integrated/mule
 	var/list/botlist = null		// list of bots
 	var/obj/machinery/bot/mulebot/active 	// the active bot; if null, show bot list
@@ -245,3 +251,8 @@
 		radio_connection.post_signal(src, signal)
 
 		return
+
+/obj/item/radio/integrated/signal/Destroy()
+	if(radio_controller)
+		radio_controller.remove_object(src, frequency)
+	..()