SURECOM SF-401 PLUS Portable Frequency Counter with CTCCSS/CDCS
Introduction:
- 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 ℃ ~ 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.
- Easy Battery level
Feature & Specification:
- Frequency range: 100Mhz-3000Mhz
! Note: (27MHz to 100MHz It can not be guaranteed and the corresponding normal emission appliance) - CTCSS/DCS Decoder
- 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
|
Specifications: |
|||
| 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 |
|
impedance input: |
50 Ohm (BNC) | YES | YES |
|
Weight: |
113g | YES | YES |
|
Dimensions size : |
70 x 25 x 90mm | YES | YES |
SF-401/PLUS
Power On/Off
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
cautions:
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)
! Note: (27MHz to 100MHz It can not be guaranteed and the corresponding normal emission appliance) .
How to check Frequency of Digital DMR Radio
Press[ F3 Digital] from Measuring screen
Note. Digital model have 3 Decimal only
MENU funtion setting and save. See PIC.4
Press [F1] > into menu Page
Press [F3 down] or [F4 Up] into System and Press [F2 Rtn] into 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
CTCSS/DCS Decoder for ANALOG mode
CTCSS
| CTCSS (Hz) | |||
| 50.0 | 97.4 | 151.4 | 192.8 |
| 55.0 | 100.0 | 156.7 | 196.6 |
| 67.0 | 103.5 | 159.8 | 199.5 |
| 69.3 | 107.2 | 162.2 | 203.5 |
| 71.9 | 110.9 | 165.5 | 206.5 |
| 74.4 | 114.8 | 167.9 | 210.7 |
| 77.0 | 118.8 | 171.3 | 218.1 |
| 79.7 | 123.0 | 173.8 | 225.7 |
| 82.5 | 127.3 | 177.3 | 229.1 |
| 85.4 | 131.8 | 179.9 | 233.6 |
| 88.5 | 136.5 | 183.5 | 241.8 |
| 91.5 | 141.3 | 186.2 | 250.3 |
| 94.8 | 146.2 | 189.9 | 254.1 |
CDCSS
| Standard | sf401 check |
Standard | sf401 check |
Standard | sf401 check |
Standard | sf401 check |
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| 23 | 23 | 143 | 143 | 266 | 465 | 465 | ||||
| 25 | 25 | 145 | 271 | 271 | 466 | 466 | ||||
| 26 | 26 | 152 | 152 | 274 | 503 | 503 | ||||
| 31 | 31 | 155 | 155 | 306 | 306 | 506 | 506 | |||
| 32 | 32 | 156 | 156 | 311 | 311 | 516 | 516 | |||
| 36 | 162 | 162 | 315 | 315 | 532 | 532 | ||||
| 43 | 43 | 165 | 165 | 325 | 546 | 546 | ||||
| 47 | 47 | 172 | 172 | 331 | 331 | 565 | 565 | |||
| 51 | 51 | 174 | 174 | 332 | 606 | 606 | ||||
| 53 | 205 | 205 | 343 | 343 | 612 | 612 | ||||
| 54 | 54 | 212 | 346 | 346 | 624 | 624 | ||||
| 65 | 65 | 223 | 223 | 351 | 351 | 627 | 627 | |||
| 71 | 71 | 225 | 356 | 631 | 631 | |||||
| 72 | 72 | 226 | 226 | 364 | 364 | 632 | 632 | |||
| 73 | 73 | 243 | 243 | 365 | 365 | 654 | 654 | |||
| 74 | 74 | 244 | 244 | 371 | 371 | 662 | 662 | |||
| 114 | 114 | 245 | 245 | 411 | 411 | 664 | 664 | |||
| 115 | 115 | 246 | 412 | 412 | 703 | 703 | ||||
| 116 | 116 | 251 | 251 | 413 | 413 | 712 | 712 | |||
| 122 | 252 | 423 | 423 | 723 | 723 | |||||
| 125 | 125 | 255 | 431 | 431 | 731 | 731 | ||||
| 131 | 131 | 261 | 261 | 432 | 432 | 732 | 732 | |||
| 132 | 132 | 263 | 263 | 445 | 445 | 734 | 734 | |||
| 134 | 134 | 265 | 265 | 464 | 464 | 743 | 743 | |||
| 754 | 754 | |||||||||
Package Contents
1x SF401 PLUS Frequency Counter
1 x UHF Antenna
1x English User Manual
1x USB charger cable
1x USB AC adapter 100-240V
Q&A of SF-401 plus Frequency Counter
Problem: Frequency counter cannot check VHF frequency
Solutions:
1) Swtich the ATT button into left hand side
2) Then change the antenna into VHF or Dual band, as customer are using UHF antenna, but checking VHF band
3) If you really using the UHF antenna to check it, please try to slant your radio to the frequency counter, like the following picture
