Warning: DOES NOT compatible with Digital RadioDescription VSWR. Forward and reflected power direct digital readout, without any calibration. Maximum measurable power range up to 120W. low insertion loss (0.3 decibels or less) structure allows it to be permanently connected. Build in Frequency counter. All Function display ( Frequency, Power, SWR, FW, RW, Battery voltage) Functions Frequency range: 100 - 520MHz Measurable power range: 0 - 120W Input Frequency counter Maximum power: 120W Accuracy: mean + / - 5% Impedance: 50? Battery : 3.7V Li-ion Rechargeable Battery Interface: N-J Interface Size: 66*68*37 (mm) Weight: 220g Specification MAX. Power in: 120 W V.S.W.R: 1.00~19.9 Frequency Ranger: COVER 100MHz~520MHz Insertion Loss: < 0.15dB(VHF) , < 0.25dB(UHF) Temperature: 0?~60? Input Frequency counter: Yes Battery Voltage Display: Yes Battery Build-in: 600 mAh Li-ion Battery Auto Power Off: 1-9 mins Charger in: 5V (micro usb) Backlight: AUTO OFF 1-9 mins Interface (in and out ): N(SL16) Connect the Output of your transceiver to "TX" and Antenna or Load to "ANT". Proper adaptor/cable is required if your device has different type of connectors. 1) Adj. RF Forward % Press 2 second the [Red button] to power on or power off Function Memory SAVE 1 Press MENU (Blue button) 2 Press F1 (Red button) (Select 1-6 Function) 3 Press Blue button ( - ), Yellow button (+) 4 Press the Red button for 2 seconds 5 Press the Blue button to SAVE and EXIT Package List 1x SURECOM SW-102 Meter 1x Charger Cable 1x Users Manual1 x Ground Plate