The 20-7009 from Chelton is an Active CRPA Antenna that operates from 1215.6 to 1587.42 MHz covering the GPS L1 & L2 (P and M-Code) bands. This CPRA (Controlled Reception Pattern Antenna) consists of four light-weight, temperature stable radiating elements with hemispherical coverage. The antenna has RHCP polarization and is available in a variety of options, including passive and active configurations. The active configuration containing four low-noise amplifiers protected by filters, providing rejection of unwanted out-of-band signals, and limiters which provide protection from high power signals. The included LNAs provide 28 dB of gain with a noise figure of 3 dB. It is designed for airborne rotary wing and ground-based operations.
The 20-7009 is designed to work in conjunction with a compatible Chelton Digital Antenna Control Unit which also houses the anti-jam electronics functionality. It is available in a module that measures 114.3 x 114.3 x 43.5 mm with SMA-female connectors and complies with MIL-STD-810G environmental standards.
