Beschreibung
RAMI AV-74 is a broadband blade antenna for transponder, DME or ADS-B use in the 960–1220 MHz band. The gloss white ASA plastic housing is 4.1 in (104 mm) long and 3.4 in (86 mm) high, with a female BNC connector and two #8-32 threaded studs 0.425 in (10.8 mm) long and 1.750 in (44.5 mm) apart. RAMI lists it as a direct replacement for the Comant CI-105.
It is vertically polarized with an omnidirectional pattern, unity gain, 50 Ω impedance, VSWR of 1.5:1 maximum and 2.5 kW peak RF power handling. It weighs 0.2 lb (91 g) maximum and is rated to 350 mph (304 kt) and 50,000 ft. The FAA has authorized the AV-74 to TSO-C66c and TSO-C74c.
A cellular neoprene mounting pad, mounting hardware and a drilling template are supplied. RAMI specifies a location at least 18 in (46 cm) from other metal protrusions on as flat a surface as possible, typically on the belly. The 50 Ω coax (RG-58/U or similar) with a male BNC connector is not included. Installation in a certified aircraft needs an approved modification and a Certificate of Release to Service. Fit depends on the aircraft type and the transponder or DME model.
