This specification covers the performance requirements of a broadband identification
frien se or foe (IFF) antenna system. The antenna system operates in two bands: high frequency
(1030 MHz i 10 MHz and 1090 MHz f 10 MHz), and low frequency (600 MHz to 800 MHz). The high frequency
band operates with sum and difference radiated patterns in an ISCS m d e at 1030 MHz f 10 MHz,
The low frequency band and the 1090 MHz i 10 MHz operate in the sum pattern only.