Models 4579, 4580 and 4581 are equipped with female SMA connectors while Model 4582 utilises female 2.92mm coaxial connectors. Phase shift is adjusted via a rotating control knob, with the position fixed by means of a lock nut.
These high-performance devices offer a low insertion loss of typically 1.5dB and maximum VSWRs ranging from 1.6:1 to 2.0:1. Power-handling capability is specified as 100W average and 3kW peak.
Produced in accordance with the L-3 Communications quality-assurance programme, the phase shifters weigh 306g and feature a sturdy housing measuring 95.3 x 50.8 x 25.4mm, excluding connectors and control knob.