Designed for use in North American markets, the firm has introduced a line of surface-mount and TO39 surface-acoustic-wave (SAW) resonators and front end filter at 390 MHz with an accompanying 10.7 MHz LO resonator. The RO2188A surface-mount resonator has a footprint of 5.97 x 3.94 mm and is housed in a rugged, hermetically-sealed, low-profile TO39 case. The RF1355 front-end filter is also packaged in the TO39 case. Markets include automotive, commercial, utilities, industrial, consumer and government. The primary application for 390-MHz systems is garage door openers.