zBoost RF Signal Meter - The zBoost YX699 aids in placement of antenna by detecting area of strongest signal using included whip antenna, Small footprint, lightweight, and built for use in the field, Provides signal strength readout on a digital display, Easy to use - just add batteries (not ncluded) and start reading signals. Dual band (800 and 1900 Mhz) works with all US Carriers operating on Cellular and PCS bands (not Nextel/iDEN) Includes signal meter, direct connect cable and whip antenna.