A comm-relay was a device used to communicate over long distances. Talon Karrde carried one when he went on a Morodin-hunting safari on Varonat. It was hidden within his melodium.
Appearances
"Death-Hunter" — Star Wars Adventure Journal 9 (as comm relay unit)
"First Contact" — Star Wars Adventure Journal 1 (reprinted in The Best of the Star Wars Adventure Journal, Issues 1-4; Classic Adventures: Volume Four — The Best of the Journal; Tales from the Empire; and Hyperspace: The Official Star Wars Fan Club) (Mentioned only)