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SW-102 UV 125-525MHz   

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 (SW102UV only) .
All Function display (  SWR,FW,RW,Battery Level)


Feature & Specification
Frequency range: 125 - 525MHz 
Measurable power range: 0.5 - 120W(+-0.5%)
Measurable S.W.R range: 1.00:1~19.99:1
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 / SO239 Interface

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Interface: N-J Interface/ SO239 

MAX. Power in :120 W        (Measurable power,Radio must be ANALOG)

V.S.W.R1.00 :1 ~ 19.99:1

Frequency Range COVER : 125MHz~525MHz SW102UV 

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

Temperature 0℃~60℃

Frequency counter : SW102UV only  (  TX input  must be minimum 0.5W + - 0.5%)

Battery Level Display : Yes

Battery Build-in :3.7V Li-ion Battery

Auto Power Off : 1-9 mins

Size: 66*68*37 (mm)

Charger in 5V (micro usb)

Back-light AUTO OFF  

Interface (in and out )N  / SO239 (SL16)

Weight: 220g (include battery)


  • Power ON/OFF:

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

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

Mode No.Item Adj 

Default Setting


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

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

3 Adjustment Time Base -99  to  +99 Frequency Counter ,O.S.C. Time Base

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

5 POWER OFF 0-9   "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 Function)

  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 adapter /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 transceiver  RF output Watt :
    Cable Connect to "TX" on Radio output and dummy Load to "ANT".  Proper adapter /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 D.M.R. system)


  • How to display rotate : (up to Ver. 2.02 only )

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

  2. Press Yellow key to normal .


  • Package Contents

  • 1x SURECOM  SW-102-UV Power & S.W.R. Meter  (N - connector)

  • 1x Power PSU 100-240V

  • 1x Charger Cable 

  • 1x English Users Manual

Version information of date: 
VER.3.3~V4.5      (P.C.B. 001) Production on   2016-2017    
VER.5.1               (P.C.B. 001) Production on   2017-2018   
VER.2.0 ~V2.03  (P.C.B. 002) Production on   2018-2020    
VER.2.06 ~2.08   (P.C.B. 002) Production on   2020-2021    

VER,2.4  ~V2.7   (P.C.B. 003) Production on   2021-  2023     


The first from : 
P.C.B. 001 (Old version )   V3.3,V3.8,V4.3, V4.5  can up to V5.1  .       
P.C.B. 002  V2.02,V2.03,V2.06 ,V2.07 ,V2.08    (Version V2.0  to V2.06 (is same V2.07  V2.08).....
 , the watt meter refenece is best than  V3.3,V3.8,V4.3, V4.5,V5.1 .)
P.C.B. 003  V2.4 ~ V2.7  (New PCB design for S.W.R.)  .
(* V2.7 will be cancelled the efficiency % ,sorry for the inconvenience)


If there is any change in the factory, there will be no further notice.

125MHz -525MHz
125MHz -525MHz
1.6MHz -70MHz




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