V.S.W.R. meter Introduction

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 Funtion display ( Frequency Counter ,Power , SWR,FW,RW,Battery Level)

Feature & Specification
Frequency range: 125 - 525MHz
Measurable power range: 0.5 - 120W(+-0.5%)
Input  read frequency counter (must be < 0.5 W)
Maximum power: 120W
Impedance: 50Ω
Size: W 76 X H 77 X D35 mm.
Weight: < 220 grams
Battery : 3.7V Li-ion Rechargeable Battery

* Not for the digital radio.

Interface: N-J Interface




Interface: N-J Interface

MAX. Power in120 W        (Measurable power,Radio must be ANALOG)


Frequency RangerCOVER : 125MHz~525MHz

Insertion Loss< 0.15dB(VHF) , < 0.25dB(UHF)


Frequency counterYes (  TX input  must be minimum 0.5W + - 0.5%)

Battery DisplayYes

Battery Build-in3.7V  Li-ion Battery

Auto Power Off1-9 mins

Size66*68*37 (mm)

Charger in 5V (micro usb)

BacklightAUTO OFF  

Interface (in and out )N(SL16)

Weight220g (include battery)


  • Power ON/OFF:

Press 2 second the [Red button] to power on or power off

MENU Dispaly  (Note: Version for up to V3.8)

Mode No.ItemAdj 

Default Setting


1Adjustment Forward Power -99  to  +990Fine Tune Level %

2Adjustment Reverse Power -99  to  +990Fine Tune Level %

3Adjustment Time Base -99  to  +990Frequency Counter ,OSC Time Base

4LCD DIM (Back Light  Time)0-91"0" is always on,  1 min  to  9 mins

5POWER OFF0-93"0" is always on,  1 min  to  9 mins

* Supplier, the product will add functionality without having to give notice


  • Set & Save​:

  1. ​Press MENU [Blue button]

  2. Press F1 [Red button)(Select 1-5 Funtion)

  3. Press [Blue button] ( - ), [Yellow button] (+)

  4. Press the  [Red button ]for 2 seconds

  5. Press the  [Blue button] to SAVE and EXIT


  • How to check the S.W.R. of your Antenna :
    ​Connect to "TX" on Radio output  and Antenna  to "ANT".  Proper adaptor/cable is required if your device has different type of connectors.

  1. Measurement V.S.W.R. : (see Pic.1)

  2. SW-102 TX connect Radio RF out  

  3. Radio TX , SW-102 with display S.W.R. measure data.
    Do not affect the test in the following cases, there are objects nearby, placed horizontally.

  • How to check the output Watt of your transceiver :
    Connect to "TX" on Radio output and dummy Load to "ANT".  Proper adaptor/cable is required if your device has different type of connectors.

  1. Measurement Power: (see Pic.2)

  2. SW-102 TX connect Radio RF out  

  3. SW-102 ANT connect 50 ohm Dummy Load

  4. Push Radio TX , SW-102 display is Power  measure data.
    (SW-102 is not for DMR system)

  • How to display rotate : (ver 2.02only )

  1. Press Yellow key to rotate display in 180 degree , 

  2. Press Yellow key to normal .


  • Package Contents

  • 1x SURECOM  SW-102-UV Power & SWR Meter  (N - connector)

  • 1x Power PSU 100-240V

  • 1x Charger Cable 

  •  1x English Users Manual

Version information: 
VER.3.3-V4.5   Production on   2016-2017   ( display on  LCD )
VER. 5.1            Production on   2017-2018   ( display on  LCD )
VER.2.0 -V2.06  Production on   2018-2021   ( display on  LCD )


 The first from  , 
Old version P.C.B.  V3.3,V3.8,V4.3, V4.5  can up to V5.1  .        V2.02,V2.03,V2.06 new P.C.B. 

Version V2.0  to V2.06 (same V2.07  V2.08)..... is new version , the watt meter refenece is best than  V3.3,V3.8,V4.3, V4.5,V5.1 .





sw-102-how-to-swr (1).jpg