The Surecom SF-401 Plus reads your RF transmitted frequency from 100 to 3000 MHz (27 to 100 MHz coverage with reduced specs.).
Additionally, it can read and display your CTCSS tone and DCS code on the backlit colour LCD screen.
The display may be set to read 0.000 or 0.0000 MHz with TCXO and charging LED.
Auto-power-off may be set for 1 to 9 minutes. Built-in 3.7 Volt Li-ion battery.
This item comes with: a BNC antenna, USB charging cable, and UK 3-pin USB power supply.
A comprehensive instruction sheet is also supplied.
This frequency meter is capable of measuring the parameters of the frequency of the continuous carrier signal, with a signal strength indicator.
This portable frequency counter is designed for counting continuous wave signals coming from radios.
There are easy ranges for you to choose from. 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 includes areas such as 2m HAM radio, all VHF and UHF
DMR Radio signal e frequency counter.
Easy Battery level
Feature & Specification:
Frequency range: 100Mhz-3000Mhz
! Note: (27MHz to 100MHz It can not be guaranteed and the corresponding normal emission appliance)
LCD Dim level setting
Frequency digital 0.000 or 0.0000 ( +-0.001)
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
Built-in Li-ion battery
Net Weight: 113g
4 buttons control
Auto power off 1-9minutes
Charging battery LED indicator
Power On –Press and Hold down the [black key] by 2 second
Power Off –Press and Hold down the [black key] by 4 seconds of number count down to 0
Charging the battery,
Plug the Power cord into the adaptor, Micro USB connected SF-401, The Led indicating:
*The RED Led is light - Charging
* The Green Led is light - Full
How to check Frequency measuring. See PIC.3
The transmitter near the frequency counter antenna, see the signal reception conditions is zone green, you can test. Please see Pic.3
cautions: e.g. display 1800.000Mhz, The transmitter distance is too close to the frequency counter will affect the test results, and the signal bar is red. (see Pic.1)
e.g. display 0.000, The transmitter distance is too far from the frequency counter and the signal is weak, which will affect the test results, the signal bar is low. (see Pic.1)
! Note: (27MHz to 100MHz It can not be guaranteed and the corresponding standard emission appliance).
How to check the Frequency of Digital DMR Radio
Press[ F3 Digital] from the Measuring screen mode
Note: Use Digital mode to have 3 Decimal only
MENU function setting and save.
Press [F3 down] or [F4 Up] into System and Press [F2 Rtn] into the system Page PIC.4
Press[F3 down] or [F4 Up] select funtion ,Press [F2 Edit] > [F3 - ][F4 +] change mode
Press[Menu] > [F1 ]to Exit or [F4 ] to Save and Exit
(Do not directly connect a radio RF output by cable, HIGH RF output will damage the FREQUENCY counter ).