Every airline coordinates its own unique procedure for aircraft push-backs and power-backs. Most are organized around the use of "hardwired" headphones that attach to the aircraft intercom system. Due to the proximity of the mechanic to the nose gear and the need for the tow driver to focus on guiding the aircraft, the possibility of push-back related accidents becomes a safety concern.

When it comes to critical "ground crew to pilot" communications during aircraft servicing and rollout, nothing accomplishes the task more efficiently and safely than Comm-Kit. A wireless intercom communications system, Comm-Kit provides hands-free communications to replace commonly employed long-tethered "hardwired" headsets.

With Comm-Kit, Earmark presents a cordless system that forms a VHF radio link between the pilot and the ground crew. The Comm-Kit miniature base station attaches directly to the aircraft at the external intercom jack.

A self-contained, noise-excluding 4C Headset Radio or Series 5 Headset Radio is worn by the ground crew. The noise excluding headset incorporates a specially designed microphone that operates under high-noise conditions. Ground crew transmitters include VOX (voice actuation) as a standard feature to permit hands-free operations.

The intercom link employs a full duplex mode of operations; both the pilot and the ground crew have the ability to speak at any time, without waiting for the other to finish.