ERI Shared Aperture FM antennas for simulcast analog and IBOC digital transmission operation are an antenna configuration utilizing the industry leading ROTOTILLER® Series FM antennas, with an installed base, worldwide, larger than any other FM antenna type or design. The system is capable of implementing the proposed increase to digital IBOC effective radiated power (ERP) levels of up to 10% (-10 dBc) of authorized analog ERP.
The shared aperture antenna system is available in a large variety of configurations and utilizes construction methods that yield analog to digital isolation ratios of -40 dB, for single frequency applications. The antenna systems are also available in arrays that are suitable for multiplexing two or more signals into a common antenna and transmission line. In addition, to multiplexed designs the shared aperture FM antennas are available as directional FM arrays and can be measured and optimized for best radiation performance on ERI’s full scale antenna test range.
Contact ERI to specifiy requirements.
Shared Aperture FM Antenna Product Announcement > Download File
(Type: Product Announcement; Publication Number: 20090405001_AEN; Language Code: EN; Revision: 01)