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Introduction
Description:
Powerful signal strength indicator to measure walkie talkies' continuous
carrier signal frequency for wireless enthusiasts.
Designed for counting continuous wave signal from Two-way Radio
Easy ranges to choose and cover almost all the frequency
Include frequency areas such as 2m HAM radio, all VHF and UHF (Frequency
range: 27Mhz-3000Mhz)
DMR Radio signal frequency counter.
Easy battery level
Features:
CTCSS/DCS Decoder
LCD Dim level setting
Frequency digital 0.000 or 0.0000
Work by TCXO(Temperature Compensate X'tal (crystal) Oscillator) 2～2.5ppm
Color Display 240x320
Build-in Li-ion battery
Only four-button control means easy to use
Small size allows hand holding.
Auto power off 1-9minutes
Charging battery LED indicator
If 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.
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
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Comparison Between SF-401 & SF-401-plus |
|
Brand Name: |
SURECOM HK |
SF-401 |
SF-401-PLUS |
|
DIGITAL RADIO Signal |
DMR |
No |
YES |
|
Signal Attenuation S.W. |
-20db |
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 |
|
Change 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 CTCSS
(Hz) |
|
50 |
97.4 |
151.4 |
192.8 |
|
55 |
100 |
156.7 |
196.6 |
|
67 |
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 |
118.8 |
171.3 |
218.1 |
|
79.7 |
123 |
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 |
|
|
|
|
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 |
|
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