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The SURECOM SF-103 hand-held frequency counter is a more practical counter, even advanced features such as field strength measurement are incorporated. It is compact, truly pocket sized, test instrument designed for ease of use and dependable performance. Supplied as a complete with internal Li-ion battery pack, AC wall charger and antenna.

The frequency meter capable of measuring the parameters of the frequency of the continuous carrier signal walkie-talkies , with signal strength indicator.
it is the tool of choice for maintenance personnel ,test frequency and signal strength for wireless enthusiasts.
This portable frequency counter is designed for counting continuous wave signal comes from Two-way Radio. 
There are easy ranges for you to choose. The ranges cover most of the frequency of the two way radios you want to measure. 
Its four-button control is easy to use and its small size allows you to carry it anywhere you like.
Work by  TCXO(Temperature Compensate X'tal (crystal) Oscillator) ,In the range of -45 ℃ ~ 65 ℃ can reach ± 2 ~ ± 4ppm accuracy
This include very interesting frequency areas such as 2m HAM radio, all VHF and UHF
DMR Radio signal e frequency counter.
GUI Battery level


Feature & Specification:

  •    Frequency range two select : 2MHz-200MHz / 27MHz -2800MHz

  •   CTCSS/DCS Decoder 

  •    Frequency counter Digital mode for DMR radio

  •     Work by TCXO( Temperature Compensate X'tal (crystal) Oscillator) 2~2.5ppm

  •     Frequency Response time:  0.2-0.5sec.( CTCSS/CDCSS >0.5-1sec) 

  •     TFT Color Display 240 x 320 ,LCD Dim level setting

  •     Build-in  Li-ion battery

  •     Net Weight: 113g 

  •     4 buttons control

  •     Auto power off  1-9minutes   

  •     Charging battery LED indicator

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User manual:

1.1 Power On/Off:     
     Power on ,press and Hold down the [Red key] by 3 second
     Power off ,press and Hold down the [Red key] by 3 second of number count down to 0  

1.2 Charging the battery :
      Plug the power cord into adaptor , micro usb connect SF103
      The Led indicating:     *The RED light Charging           * The Green light is Full

1.3 Setup the frequency Range :
      Press[ F2.stop ] button ,[F3 -->] select function to "Rang"
      Press the [F4 Ent]  Select 27M-2.8G(27MHz-2800MHz) /<=200MHz (below 200MHz) ,
      and then press[F2] to Run

1.4 Setup the time Gate :
     Press[ F2.stop ] button ,[F3 ---> ] select Function to "Gate"
     Press the [F4 Ent]  select : 0.1s / 0.25s / 0.5s / 1.0s  ,and then press [F2] to Run

1.5 Setup the Frequency counter digi :
     Press[ F2 ] botton ,[F3--->] select Function to "Gate"
     Press[F4 Ent]  Select : 3 / 4 / 5 / 6 , and then press [F2] to Run
     !  27MHz-2.8GHz  for 3 / 4 only , 2-200MHz for 3 / 4 / 5 / 6 , Detail Please see Table 1:

1.6 How to check Frequency of Digital DMR Radio
      Press[ F2 ] botton ,[F3 --->] select Function to" type" :Press [F4] select Analog / Digital(DMR) ,
      and then Press [F2] to Run
      !Note. Digital mode have 3 Decimal only.

1.7 How to ADJ. the Frequency mode of 27MHz -2.8GHz: ( See PIC.2)
       Press, [F3 MENU ] , [F3 Down] / [ F4 Up] to select the Gate to (0.1s/0.25s/0.5s/1.0s)
       Press, [F2 Edit] / [F3 - ] and [ F4 +] to select the +/- 99
       Press, [F1. Main] exit , and then press [F4 save] for save the setting .([F1] not save for exit)

1.8 How to fine tune the Frequency mode of 2-200MHz: (See PIC.1 )
      Tune the PCB VR1 (Variable resistance)
      (The factory has been set accurate, such as non-technical staff do not tune)

1.9 How to use  [F3 menu ] mode: (see PIC2)
      Press, [F3 - ] / [ F4 +] select the function ,and then press [F2 edit] for edit mode  , 
      Press, [F3 - ] / [ F4 +] selecy for change the data .
      Press, [F1. Main] exit , and then press [F4 save] for save the setting .([F1] not save for exit)

      1)Max. direct input signal 5Vp-p
      2)Prohibit direct access to the radio antenna output, resulting in damage to the frequency meter

Package include:
1 x SF-103 frequency counter
1 x DUAL BAND UHF / VHF antenna
1 x USB CHARGER with cable .


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