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New Function Frequency Counter for DIGITAL Radio
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 of 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 degree ~ 65 degree 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.
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
Build-in Li-ion battery
Net Weight: 113g
4 buttons control
Auto power off 1-9minutes
Charging battery LED indicator
Brand Name: SURECOM HK SF-401 SF-401-PLUS
DIGITAL RADIO signal DMR No YES
Signal attenuation s.w.
-10db No YES
Battery Buily-in level Voltage Easy icon
Flash Light LED YES NO
TFT LCD: 320 x 240 pixels YES YES
Frequency Range: 27Mhz -3Ghz YES YES
Li-ion Battery build-in : 3.7V 600mah YES YES
current consumption: 10ma YES YES
TCXO crystal Oscillator +- 2.5ppm YES YES
Changer in: Micro usb +5V YES YES
50 Ohm (BNC) YES YES
113g YES YES
Dimensions size :
70 x 25 x 90mm YES YES
Power On –Press and Hold down the [black key] by 2 second
Power Off –Press and Hold down the [black key] by 4 second of number count down to 0
Charging the battery
Plug the Power cord into 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
e.g. display 1800.000Mhz , The transmitter distance is too close to the frequency counter will affect the test results, , the signal bar is red .(see Pic.1)
e.g. display 0.000, , The transmitter distance is too far to the frequency counter and signal is weak ,will affect the test results, the signal bar is low .(see Pic.1)
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