Combiner duplexer reduces cost in AMPS PCS co-location

HARDWARE costs may be considerable when adding 1800-MHz personal-communicat ions-services (PCS) capability to an existing 800-MHz Advanced Mobile Phone Service (AMPS) network. Fortunately, the model AFD-21A-8020-01 combiner/du plexer filter from L-3 Communications (Folsom, CA), significantly reduces t he costs and complexity of this additional capability by enabling service p roviders: to use a single wideband antenna and existing 800-MHz feedlines t o cover 800- and 1900-MHz bands. The AFD-21A-8020-01 does this by providing better performance than conventional power-combining techniques.