Sigma6 Inc. announces its Iridium-approved dual-band antenna, the Super Max-Ex antenna. The Super Max-Ex Iridium antenna is rugged, lightweight, compact and easy to install. The dual-band, passive antenna operates at 1616 to 1626.5 MHz, Iridium frequencies, with continuous transmit and receive coverage. The Super Max-Ex can also operate as a passive GPS antenna. Through a constellation of 66 low-earth orbiting (LEO) satellites, the antenna delivers essential communications services to and from areas where terrestrial communications are not available. Sigma6's Iridium Antenna has been tested and certified for approved use with Iridium Satellite subscriber equipment by Iridium Satellite LLC. This helix design, developed by the company, gives maximum exposure to satellites at the horizon making it appropriate for marine and vehicle applications. The antenna is also suited for use in remote locations where there is no cell coverage and satellite communications required.