DG503max SWR Watt Meter 3.5" LCD 1.6-60MHz 125-525MHz for DMR TDMA AM FM SSB CW
Minimum Power for SWR 1W. Checks your antenna SWR. Testing functions: Fwd/Rev Power, SWR ratio. Minimum Power of SWR. It has UHF Female (SO-239) in and out connectors. Large LCD (3.5″) backlit display for easy of reading.