Från snabb forskning så här har jag samlat Star Trek Wikia-minnet alfa.
länk
Jag tror inte att det tydligt anges vilken form av kommunikation det använder men det finns vissa begränsningar för det, såsom intervall.
The Starfleet combadge was a crystalline composite of gold,
microfilament, silicon, beryllium, and carbon-70. (TNG: "The Last
Outpost", "Time's Arrow"; VOY: "Hope and Fear") Due to the size of the
combadge, its working range was limited to five hundred kilometers,
although a starship could boost the signal to bridge larger distances.
(TNG: "11001001")
Det finns inte heller någon uttrycklig omnämnande av vad som är "under huven" förutom vad det är sammansatt av och vad combadge kan modifieras / tas ifrån varandra för att uppnå.
In emergency situations, a combadge could be modified for use in other
applications. It could be converted into a subspace distress beacon,
or the tiny power cell could be extracted for other uses. (DS9: "Rocks
and Shoals") Lieutenant Worf used it to power a homemade field
generator for several seconds. (TNG: "A Fistful of Datas") In 2374,
Captain Kathryn Janeway of the USS Voyager was able to modify Seven of
Nine's Borg implants to escape the brig of the USS Dauntless using
pieces of her combadge. (VOY: "Hope and Fear") If the casing of the
combadge was ever cracked, an emergency distress signal was emitted,
mainly to help searchers locate victims. (TNG: "A Fistful of Datas";
VOY: "Time and Again") Combadges, when destroyed by an electrical
force, could cause damage to the wearer's clothing. (TNG: "Thine Own
Self")
Såvitt jag kan säga har inte mycket förändrats i combadgesna än designerna.
2360: s foto av combadge.
2370:sfotoavcombadge