VHF-UHF SWR / RF POWER Meter, Cross-Needle 140-525Mhz - MFJ-842 Deluxe Meter Reads Power & SWR from 140-525Mhz for VHF/UHF Transceivers. Great for Amateur Ham Radio, VHF Marine, GMRS, Public Service & V/U Commercial bands. Compact size - 3.35 x 3.45 x 3.75 inches. Accepts PL-259 Inputs for Antenna & Radio. Illuminates when connected to a 12Vdc source. Power ranges of 15/150 watts forward, and 5/50 watts reflected. Cross needle design displays SWR, forward & reflected power simultaneously at a glance, without any calibration.