1050A Digital VHF/UHF Power & SWR Meter   Specifications:   MAX.POWER 120 W V.S.W.R 1.00~19.9 FREQUENCY RANGE VHF (145mhz) / UHF(435mhz) COVER:100mhz~500mhz INSERTION LOSS < 0.15dB(VHF) , < 0.25dB(UHF) TEMPERATURE 0℃~70℃ BATTERY 3 x AAA Type Battery or Rechargeable <2mA(Backlight Off) SIZE 66*68*37 (mm) INTERFACE N(SL16) WEIGHT <260g   Battery installation: Remove 4 black round screws on the corner of back cover and open it. Install 3 AAA batteries. BE CAUTIOUS to the polarities. Put the cover on and fasten the screws. IMPROPER INSTALLATION OF BACK COVER WILL CAUSE ERROR ON U-BAND MEASUREMENT! (Not include 3 x size AAA battery)   Connect the Output of your transceiver to "TX" and Antenna or Load to "ANT". NOTE: UV-Band meter utilize "N" type connectors; and"SL16" connectors (normally named "M" connecter) for HF-Band. Proper adaptor/cable is required if your device has different type of connectors. Press the red button to power on. After 2 seconds of LCD self test, its ready for normal measurement. UV-Band meter will display in sequence:"+ XXX P" (pass through power),"- XXX P" (feed back power)," XXX Γ" (SWR value), 2 seconds display for each mode. Press the red button will hold the current display. Press it again to continue the display. Under the environment of night or weak illumination, just press and hold the red button for 1 second to turn the blue back light on. Press and hold the red button for 1 second again to turn it off. 8 minutes after no power was measured, it will power off automatically. Press and hold the red button for 2 seconds to turn off manually.   PACKAGE CONTAIN 1 x    1050A Digital VHF/UHF Power & SWR Meter           (Not include 3 x size AAA battery)