Surecom SF-103 User manual

User manual SURECOM SF-103
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 SF-103
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 "Range"
Press the [F4 Ent] Select 27 MHz -2.8 GH z (27 MHz –2800 MHz) / <= 200
MHz (below 200 MHz),
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 / 1.0 s, and then press [F2] to Run
1.5 Setup the Frequency counter digital:
Press [F2] button, [F3--->] select Function to "Gate"
Press [F4 Ent] Select: 3 / 4 / 5 / 6, and then press [F2] to Run
27 MHz - 2.8 GHz for 3 / 4 only, 2 –200 MHz for 3 / 4 / 5 / 6, Detail Please see
Table 1.
1.6 How to check Frequency of Digital DMR Radio
Press [F 2 ] button, [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 27 MHz - 2.8 GHz:
Press, [F3 MENU], [F3 Down] / [F4 Up] to select the Gate to (0.1 s / 0.25 s /
0.5 s / 1.0 s)
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 –200 MHz:
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:
Press, [F3 -] / [F4 +] select the function, and then press [F2 edit] for edit mode,
Press, [F3 -] / [F4 +] select for change the data.
Press, [F1 Main] exit, and then press [F4 save] for save the setting ([F1] not
save for exit)
Caution:
1. Max. direct input signal 5Vp-p
2. Prohibit direct access to the radio antenna output, resulting in damage to the
frequency meter

Table 1: Frequency Display Resolution / CTCSS, DCS Decode frequency range
SELECT
A
27 MHz -
2.8 GHz
Gate Time
select
(seconds)
Sample Display (100 MHz)
CTCSS/DCS
Digital
select A
3
4
5
6
Decode
Range
132-173MHz
200-260MHz
400-519MHz
0.10 s
100.000
100.0000
0.25 s
100.000
100.0000
0.50 s
100.000
100.0000
1.00 s
100.000
100.0000
SELECT
B
2 MHz –
200 MHz
Gate Time
select
(seconds)
Sample Display (100 MHz)
CTCSS/DCS
Digital
select B
3
4
5
6
Disable
0.10 s
100.000
100.0000
0.25 s
100.000
100.0000
0.5 s
100.000
100.0000
100.00000
100.000000
1.00 s
100.000
100.0000
100.00000
100.000000
How to check CTCSS/DCS code:
1. Radio must be 132-173 / 200 –260 MHz / 400 –519 MHz
2. Radio must be ANALOG

Table 2: CTCSS/DCS Decoder for ANALOG mode
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

Table 3: CDCSS for ANALOG mode (N code only)
Standard(N)
sf103
check
Standard(N)
sf103
check
Standard(N)
sf103
check
Standard(N)
sf103
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