Abstract: A craft-mounted repeater system processes signal properties (e.g., signal strength) between terrestrial (ground-based) wireless networks and mobile users that are aboard crafts (e.g., airplanes and/or ships) equipped to allow the user's mobile communications device to communicate at departure and at arrival of the craft. An onboard craft-mounted non-translating in-band only repeater system is a provided that increases the terrestrial mobile network signal levels inside the aircraft or ship to allow passengers to communicate with a terrestrial cellular communications system.