Main Features:
1.Forward/Reversed/VSWR ration in one push button.
2.LED backlight display for easy reading.
3.Powered by AAA batteries/ external USB port.
4.Applicable rechargeable battery.
5.Micro USB-DC 5V output (not include adapter).
6.Convenient control layout for ease operation.
 
Specifications
Frequency range 130-150MHz, 430-520MHz (commercial band applied)
Center calibrated: 145Mhz(VHF) 435Mhz(UHF) 
Measurable power range 0 - 120W
Max. Power 120W
Accuracy 5W range (AVG) +/- 10%
Accuracy 120W range (AVG) +/- 5%
Min. Power for SW 1W
Insertion loss 0.3 dB or lower
Testing functions Forward, SWR
Impedance 50 ohm
Dimension 70W x 78H x 30D mm
Weight 220 g
Connector MJ - MJ (N optional)

Feature
RS-50 SWR&POWER meter can read out directly without any
calibration. RS-50's maximum measurable power range up to 120W. Low insertion
loss structure allows it to be connected permanently.
 
Measurement:
1, Apply output of transceiver to "TX" and antenna or load to "ANT".
2."POWER" on for ready to use.
3.LCD display show simultaneously "Fwd/Rev Power and SWR".
4.For back-light, please switch "LIGHT" to "ON".
No function in 30 seconds, the backlight will automatically off.
Once PTT launched, the backlight will be back.
 
Battery installation:
1.Remove the black screw from the cover to open the rear panel.
2.Install 2 pcs "AAA" batteries.
3.Can be used with alkaline or Ni-Ca, Ni-MH rechargeable battery.
4.This unit has no built-in charging circuitry.
5.Be sure to correct polarity of battery.
6.Remove the battery if the unit won't be used in long period.