Cobham Sensor Systems - Baltimore announces model 15RH1, a broadband linear horn gain reference antenna that operates in the frequency range of 0.75 to 3 GHz, has a VSWR of 2:1 maximum and nominal gain of 6 to 16 dBi. This antenna is primarily used in test chambers to accelerate gain measurements and minimize set-up errors. Units can be supplied with measured gain curve for enhanced gain accuracy over calculated values. Typical gain accuracy is better than 0.3 dB over the band of operation. Model 15RH1 is designed to meet NRL Report 4433 requirements.