CI 490-1 Iridium 

Dual-band passive antenna operates at Iridium™ 

frequencies, with continuous transmit and 

receive coverage from 1616 to 1626.5 MHz. 

Can also operate separately as a passive GPS 

antenna.

The ComDat CI 490-1 is a high performance 

communications antenna specifically designed 

for Iridium™ systems, and features our standard 

round-format footprint and mounting.

Through a constellation of 66 low-earth orbiting 

(LEO) satellites, Iridium™ delivers essential communications services to and from areas where 

terrestrial communication are not available.

 

RF Characteristics

Iridium TX/RX                            1616-1626.5 MHz 

GPS                                             1575.42 MHz

VSWR                                          1.5:1 Maximum

Polarization                                 RHCP

Radiation Pattern                       Hemispherical

Impedance RF                            50 Ohms

Power Handling -TX                   60 Watts

Lightning Protection                   DC Grounded

Gain                                             +3 dBic @ zenith

Mechanical

Weight                                          5.0 lb

Speed                                          330 KIAS @ Sea Level

Finish                                          Gloss White Paint

Federal Specifications

FAA TSO                                      C144

RTCA Environmental                DO-160D