Radioddity DB20-G User manual

DB20-G
GMRS-Transceiver and NOAA-Receiver

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CONTENTS
1. QUICK GUIDING
1.1 Prepare Work
1.2 Quick Use
2. ACCESSORIES
2.1 Standard Accessories
3. GETTING ACQUAINTED
3.1 Front panel
3.2 Rear panel
3.3 Microphone
4. BASIC OPERATIONS
4.1 Power On/Off
4.2 Adjusting the Volume
4.3 Switch between Main Channel and Sub
Channel
4.4 Adjust Channel
4.5 Store channel
4.6 Channel Delete
4.7 Receiving
4.8 Transmitting
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4.9 Squelch Off
4.10 Emergency Alarm
4.11 Keypad Lockout
4.12 Transmit Tone Pulse Frequency
4.13 VFO Scan and Channel Scan
4.14 VOX On/Off control
4.15 How to Install Driver and Start Programming
5. SHORTCUT OPERATION
6. FUNCTION SETTING
6.1 By Front Panel Key
6.2 By Microphone Key
6.3 Reset Factory Default
7. SPECIFICAITONS
8. ATTACHED CHART
51 groups CTCSS Tone Frequency(Hz)
1024 groups DCS Code
Menu List
Appendix A. - GMRS Frequency Chart (MHz)
01
01
01
01
01
01
01
02
02
02
02
02
02
02
03
03
03
03
04
04
04
04
04
04
05
05
06
06
06
07
08
09
09
10
14
27

1. Press microphone key or front panel key to
switch the radio to channel mode, press microphone
key or front panel key to select a
channel upward or downward.
01 02
1. QUICK GUIDING
1.1 Prepare Work
2. ACCESSORIES
2.1 3Standard Accessories
3. GETTING ACQUAINTED
3.1 Front panel
4. BASIC OPERATIONS
4.1 Power On/Off
3.2 Rear panel
1. DC power supply: 12-14V, ≥10A
2. Car antenna: 136-174, 400-490MHz, ≥20w,
SL16 connector
3. Magestic sucker
1.2 Quick Use
1. Open package , take out DB20-G radio and spares.
2. Connect power supply, microphone and antenna.
3. Turn on power supply, then turn DB20-G volume
knob to power on DB20-G.
4. Choose wanted GMRS channel by DB20-G or its
microphone to start communication.
V/M
VOL
FUN
MAIN
MON
MIC
MIC
PPT
2
1
3
4
789
ABCD
560
SQL
TONE
SCAN
BLK REV
TOT
FUN
V/M
MAIN
DIL
SUB RPT LAM
POW
SKIP MON
Transceiver Microphone
Adjusting
screws
Screws Pads manual
non-slip
mat
Fuse
(10A 250V)
Mobile
Bracket
V/M
VOL
FUN
MAIN
MON
MIC
Down
Up
Indicator
Power on,
volume switch
Menu
Monitor
Programming port/ microphone jack
VFO/Channel mode switch
LCD
Main channel PTT
MIC
MIC
PPT
2
1
3
4
789
ABCD
560
SQL
TONE
SCAN
BLK REV
TOT
FUN
V/M
MAIN
DIL
SUB RPT LAM
POW
SKIP MON
3.3 Microphone
Antenna jack
External speaker jack
Up /Down key
Indicator
Number key
1. Turn the Volume knob clockwise to turn on the radio,
the radio LCD will display programmed text and emit a
beep sound.
2. Power Off:Turn volume knob anti-clockwise until you
hear "click" to turn off the radio.
4.2 Adjusting the Volume
Turn volume knob clockwise to increase the “audio
level” and anti-clockwise to reduce it.
4.4 Adjust Channel
4.3 Switch between Main Channel and Sub
Channel
In standby status, press the microphone key or front
panel key to switch between main channel and
sub channel. The top left corner of LCD will display
current main channel.
/

In standby status, press the microphone key, the
top left corner will display “Func”, then press KEY,
the LCD bottom left corner will display Save to XXX,
now press key to select a channel number,
hold key to store the new frequency and return to
standby.
03 04
2. In channel mode, input three numbers by number
key for its direct selection (eg: 001 for channel 1).
XXX reflects for the channel number, if LCD displays
“Null” under “Save TO XXX”, means that the current
channel is empty.
4.5 Store channel
Select a receiving channel or frequency for receiving
call, if the RX signal is week, hold front panel key or
microphone key to monitor weak signals.
RX frequency range.
1. GMRS channel: GMRS frequency
2. UHF/VHF Full band: 136-174/400-490MHz
3. FM radio 65-108Mhz: available in freuqency mode
only. user can input frequency by microphone number
key like 8,8,,0,0,0,0,0, is 88Mhz.
4.7 Receiving
In standby, press microphone key or front panel
key to turn off squelch, the radio will monitor weak
signal.
4.9 Squelch Off
Hold PTT and [DN] key will transmit selected
Pre-programmed tone pulse frequency
Note:
PL and PH is valid when current working frequency is
within PL1-PH1 or PL2-PH2.
2. Channel Scan: In channel mode press microphone
key and then press key to start channel scan.
Channel scan setting shall be programmed by PC
software.
4.12 Transmit Tone Pulse Frequency
In standby, hold key until LCD displays VOX icon,
repeater this step or repower on radio to turn off VOX
function.
4.14 VOX On/Off contro
1. VFO scan: In VFO mode, press microphone key
or key to start VFO scan. If the radio has program
PL1, PH1, PL2, PH2, frequency (in the bottom of
channel list), VFO scan will between PL1-PH1 and
PL2-PH2.
4.13 VFO Scan and Channel Scan
In standby, hold key, release it until the LCD
displays ALARM, the alarm function turns on. Program
emergency alarm rule shall be programmed by PC
software.
4.10 Emergency Alarm
In standby, hold key or key, the radio emit Du
sound, the LCD displays LOCK.
Now release the key, the keypad is locked. To turn off
key lock, hold key or key until a “Du Du” tone
signal is heard, the LOCK icon disappears, now you
may release the key.
4.11 Keypad Lockout
In channel mode, press microphone key, then
press key, the LCD displays “Delete XXX” and
frequency, presss key to select the
channel to be deleted, then hold key for deleting
the current channel.
4.6 Channel Delete
Hold [PTT] and speak into microphone. the radio start
transmit, the screen shows red TX and field strength.
Hold the microphone approximately 2.5-5.0cm from
your lips and speak into the microphone at your normal
voice level: it will help to transfer best audio signal.
Note:
1. According to FCC Part 95E standard, CH8-CH14
4.8 Transmitting
“XXX” reflects for the channel number, the LCD
displays “Null” after the channel is deleted.
When the RX icon and field strength flashes, but
can not hear the calling, it means current channel
receive a matching carrier but unmatching signaling.
Refer to CTCSS/ DCS CODE or Optional Signaling
setup)
Before turn on VOX, please set VOX level in 26th
menu.
LAM
are for 0.5W FRS channels, DB20-G minimum power
5W, maximum power 20W, so CH8-CH14 not allow
transmiting.
2. Follow Part 95E rule, DB20-G only allow transmitting
on GMRS frequencies.

1. Press key to enter main menu.
2. Press key or key to choose function.
3. Press key to choose value.
4. Press key or key to store and exit.
When check DTMF code, press PTT will send current
DTMF code.
To revise DTMF code, press key and then press
key to enter edit mode.
Input DTMF code by number keys , then press PTT to
transmit the code and store.
05 06
1. After install PC software, click "Start "menu in
computer, under “ALL PROGRAMS” menu, choose
and click “USB To Com port” in DB20-G program,
install “USB To Com port” driver by indication.
2. Connect the optional USB Programming cable.
3. Click "DB20-G" programm under "ALL PROGRAMS"
menu. click "OK" to start programming software.
4.15 How to Install Driver and Start
Programming
When setting DCS code, key is for switch
between positive and inverse code
When setting DCS code, key is for switch
between Positive and inverse code. key is for
choose special DCS.
In DTMF check mode
5. SHORTCUT OPERATION
Press microphone key and then press number key
to fast enter following functions, then press
key to select the value. Presss key or key for
storing.
6. FUNCTION SETTING
6.1 By Front Panel Key
1. Press key and then press key to enter menu.
2. Press key or key to choose function.
3. Press key to choose value.
4. Press key to store and exit.
6.2 By Microphone Key
+
+
+
+
+
+
+
+
+
+
Combination Key
Function list
No.
1
2
3
4
Function name
Squelch level setting
Optional signaling setting
Scan Skip
Scan
Function list
3
4
5
6
7
10
11
12
15
16
TX/RX CTC/DCS
Optional signaling
Squelch mode
Step size
Band width
Busy channel Lock
Channel name
TX OFF
Compander
NC(Noise reduction)
67Hz~254.1Hz,
000N~777I
OFF, DTMF,
2Tone, 5Tone
SQ, CT/DCS, Tone,
C&T, C/T
2.5K~50K
WIDE (25K),
NARROW (12.5K)
OFF, REPEATER,
BUSY
0~z
ON,OFF
ON,OFF
ON、OFF
No.
1
2
Function name
TX/RX CTC/DCS
RX CTC/DCS
Setting value
67Hz~254.1Hz,
000N~777I
67Hz~254.1Hz,
000N~777I
Combination Key
No.
5
6
7
8
9
10
Function name
Busy channel lockout
Time out timer
Sub channel on/off switch
Function Menu
LCD brightless
DTMF Code check
/

07 08
7. SPECIFICAITONS
If your radio seems to be malfunctioning because of
wrong operation or setup, this function will resume all
setup and channels to factory default.
1. Press front panel key to enter main MENU list.
2. Press or key to chooe 30th function, the LCD
display reset options.
3. Press key to chooe “FACTORY？”
4. Hold key, until the radio re-power on.
After reset, all channel and fucntion setting will resume
default value.
6.3 Reset Factory Default
No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Function name
5 Tone
2 Tone
Sub channel display
Key beep
Time out timer
DMTF transmit time
Squelch level
Scan pause time
LCD brightness
VOX level
VOX delay
Tone burst frequency
Channel display
Reset
Setting value
1~100,
Press PTT to transmit
1~32,
Press PTT to transmit
FREQ、VOLT、OFF
ON、OFF
1~30Min、OFF
50ms~500ms
OFF、1~9
5ST、10ST、15ST、2SP
1~5
OFF, 1-9
0.5-5 Second
1750Hz, 2100Hz
1000Hz, 1450Hz
FREQ, CH, NAME
FACTORY？INITIALIZE？
Frequency Range
Channel Spacing
Channel Number
Operating Voltage
Squelch
Frequency Stability
Operating Temperature
Dimensions(mm)
Weight
Sensitivity (12dB Sinad)
Adjacent Channel Selectivity
Audio Response
Hum & Noise
Audio distortion
Audio power output
≤ 0.25μV
≥ 70dB
+1~-3dB(0.3~3KHz)
≥ 45dB
<3%
>2W@10%
≤ 0.35μV
≥ 60dB
+1~-3dB(0.3~2.55KHz)
≥ 40dB
TX1: 462.5625-462.7125MHz (5W)
TX2: 462.550-467.725MHz
RX: 136-174MHz, 400-480MHz 65-108MHz
12.5K/25K
500 channels
DC 13.8V±15%
Carrier/ CTCSS/DCS/5Tone/2Tone/DTMF
±2.5ppm
-20℃ ~ +60℃
124x101x36m
0.45kg (main unit)
/
If choose“INITIALIZE？”, only function setting value
will resume to default setting.
GENERAL
RECEIVER
Wide band Narrow band

09 10
8. ATTACHED CHART
51 groups CTCSS Tone Frequency(Hz)
Power - USA version
Modulation
Adjacent Channel Powe
Hum & Noise
Spurious Emission
Audio Response
Audio Distortion
16KΦF3E
≥ 70dB
≥ 40dB
≥ 60dB
+1~-3dB (0.3~3KHz)
11KΦF3E
≥ 60dB
≥ 36dB
≥ 60dB
+1~-3dB (0.3~2.55KHz)
TRANSMITTER
Wide band
≤ 5%
462.5625-462.7125MHz (5W) ; 462.550-467.725MHz (18W)
Narrow band
No.
1
2
3
4
5
6
7
8
Freq.(Hz)
62.5
67.0
69.3
71.9
74.4
77.0
79.7
82.5
1024 groups DCS Code
No.
9
10
11
12
13
14
15
16
Freq.(Hz)
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
No.
17
18
19
20
21
22
23
24
Freq.(Hz)
110.9
114.8
118.8
123.0
127.3
131.8
136.5
141.3
No.
25
26
27
28
29
30
31
32
Freq.(Hz)
146.2
151.4
156.7
159.8
162.2
165.5
167.9
171.3
No.
33
34
35
36
37
38
39
40
Freq.(Hz)
173.8
177.3
179.9
183.5
196.2
189.9
192.8
196.6
No.
41
42
43
44
45
46
47
48
Freq.(Hz)
199.5
203.5
206.5
210.7
218.1
225.7
229.1
233.6
No.
49
50
51
Freq.(Hz)
241.8
250.3
254.1
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
1.
9.
17.
25.
33.
41.
49.
57.
65.
73.
81.
89.
97.
105.
113.
121.
129.
000
010
020
030
040
050
060
070
100
110
120
130
140
150
160
170
200
2.
10.
18.
26.
34.
42.
50.
58.
66.
74.
82.
90.
98.
106.
114.
122.
130.
001
011
021
031
041
051
061
071
101
111
121
131
141
151
161
171
201
3.
11.
19.
27.
35.
43.
51.
59.
67.
75.
83.
91.
99.
107.
115.
123.
131.
002
012
022
032
042
052
062
072
102
112
122
132
142
152
162
172
202
4.
12.
20.
28.
36.
44.
52.
60.
68.
76.
84.
92.
100.
108.
116.
124.
132.
003
013
023
033
043
053
063
073
103
113
123
133
143
153
163
173
203
5.
13.
21.
29.
37.
45.
53.
61.
69.
77.
85.
93.
101.
109.
117.
125.
133.
004
014
024
034
044
054
064
074
104
114
124
134
144
154
164
174
204
6.
14.
22.
30.
38.
46.
54.
62.
70.
78.
86.
94.
102.
110.
118.
126.
134.
005
015
025
035
045
055
065
075
105
115
125
135
145
155
165
175
205
7.
15.
23.
31.
39.
47.
55.
63.
71.
79.
87.
95.
103.
111.
119.
127.
135.
006
016
026
036
046
056
066
076
106
116
126
136
146
156
166
176
206
8.
16.
24.
32.
40.
48.
56.
64.
72.
80.
88.
96.
104.
112.
120.
128.
136.
007
017
027
037
047
057
067
077
107
117
127
137
147
157
167
177
207

11 12
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
137.
145.
153.
161.
169.
177.
185.
193.
201.
209.
217.
225.
233.
241.
249.
257.
265.
273.
210
220
230
240
250
260
270
300
310
320
330
340
350
360
370
400
410
420
138.
146.
154.
162.
170.
178.
186.
194.
202.
210.
218.
226.
234.
242.
250.
258.
266.
274.
211
221
231
241
251
261
271
301
311
321
331
341
351
361
371
401
411
421
139.
147.
155.
163.
171.
179.
187.
195.
203.
211.
219.
227.
235.
243.
251.
259.
267.
275.
212
222
232
242
252
262
272
302
312
322
332
342
352
362
372
402
412
422
140.
148.
156.
164.
172.
180.
188.
196.
204.
212.
220.
228.
236.
244.
252.
260.
268.
276.
213
223
233
243
253
263
273
303
313
323
333
343
353
363
373
403
413
423
141.
149.
157.
165.
173.
181.
189.
197.
205.
213.
221.
229.
237.
245.
253.
261.
269.
277.
214
224
234
244
254
264
274
304
314
324
334
344
354
364
374
404
414
424
142.
150.
158.
166.
174.
182.
190.
198.
206.
214.
222.
230.
238.
246.
254.
262.
270.
278.
215
225
235
245
255
265
275
305
315
325
335
345
355
365
375
405
415
425
143.
151.
159.
167.
175.
183.
191.
199.
207.
215.
223.
231.
239.
247.
255.
263.
271.
279.
216
226
236
246
256
266
276
306
316
326
336
346
356
366
376
406
416
426
144.
152.
160.
168.
176.
184.
192.
200.
208.
216.
224.
232.
240.
248.
256.
264.
272.
280.
217
227
237
247
257
267
277
307
317
327
337
347
357
367
377
407
417
427
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
281.
289.
297.
305.
313.
321.
329.
337.
345.
353.
361.
369.
377.
385.
393.
401.
409.
417.
430
440
450
460
470
500
510
520
530
540
550
560
570
600
610
620
630
640
282.
290.
298.
306.
314.
322.
330.
338.
346.
354.
362.
370.
378.
386.
394.
402.
410.
418.
431
441
451
461
471
501
511
521
531
541
551
561
571
601
611
621
631
641
283.
291.
299.
307.
315.
323.
331.
339.
347.
355.
363.
371.
379.
387.
395.
403.
411.
419.
432
442
452
462
472
502
512
522
532
542
552
562
572
602
612
622
632
642
284.
292.
300.
308.
316.
324.
332.
340.
348.
356.
364.
372.
380.
388.
396.
404.
412.
420.
433
443
453
463
473
503
513
523
533
543
553
563
573
603
613
623
633
643
285.
293.
301.
309.
317.
325.
333.
341.
349.
357.
365.
373.
381.
389.
397.
405.
413.
421.
434
444
454
464
474
504
514
524
534
544
554
564
574
604
614
624
634
644
286.
294.
302.
310.
318.
326.
334.
342.
350.
358.
366.
374.
382.
390.
398.
406.
414.
422.
435
445
455
465
475
505
515
525
535
545
555
565
575
605
615
625
635
645
287.
295.
303.
311.
319.
327.
335.
343.
351.
359.
367.
375.
383.
391.
399.
407.
415.
423.
436
446
456
466
476
506
516
526
536
546
556
566
576
606
616
626
636
646
288.
296.
304.
312.
320.
328.
336.
344.
352.
360.
368.
376.
384.
392.
400.
408.
416.
424.
437
447
457
467
477
507
517
527
537
547
557
567
577
607
617
627
637
647

13 14
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
Code
No.
DSC
(Octal)
425.
433.
441.
449.
457.
465.
473.
481.
489.
497.
505.
650
660
670
700
710
720
730
740
750
760
770
426.
434.
442.
450.
458.
466.
474.
482.
490.
498.
506.
651
661
671
701
711
721
731
741
751
761
771
427.
435.
443.
451.
459.
467.
475.
483.
491.
499.
507.
652
662
672
702
712
722
732
742
752
762
772
428.
436.
444.
452.
460.
468.
476.
484.
492.
500.
508.
653
663
673
703
713
723
733
743
753
763
773
429.
437.
445.
453.
461.
469.
477.
485.
493.
501.
509.
654
664
674
704
714
724
734
744
754
764
774
430.
438.
446.
454.
462.
470.
478.
486.
494.
502.
510.
430.
438.
446.
454.
462.
470.
478.
486.
494.
502.
510.
431.
439.
447.
455.
463.
471.
479.
487.
495.
503.
511.
656
666
676
706
716
726
736
746
756
766
776
432.
440.
448.
456.
464.
472.
480.
488.
496.
504.
512.
657
667
677
707
717
727
737
747
757
767
777
Menu List
Menu No. Menu Selection Description & Default settings
Default: OFF
CTCSS/DCS codes are privacy codes, Only when the code of the
transmit frequency and receive frequency is matching you can
transmit or receive the signal on the same channel.
The setting is for turning off or activating CTCSS/DCS code in
transmit frequency.
Press 1 on the mic to select the type of CTCSS/DCS:
67Hz-254.1Hz, 000N-777I.
Press
DN or UP on the mic to select CTCSS/DCS code.
Default: OFF
CTCSS/DCS codes are privacy codes, Only when the code of the
transmit frequency and receive frequency is matching you can
transmit or receive the signal on the same channel.
The setting is for turning off or activating CTCSS/DCS code in receive
frequency.
Press 1 on the mic to select the type of CTCSS/DCS:
67Hz-254.1Hz, 000N-777I.
Press
DN or UP on the mic to select CTCSS/DCS code.
OFF
67Hz-254.1Hz01 T-CDC
000N-777I
OFF
67Hz-254.1Hz02 R-CDC
000N-777I

15 16
Menu No. Menu Selection Description & Default settings
Default: OFF
CTCSS/DCS codes are privacy codes, Only when the code of the
transmit frequency and receive frequency is matching you can
transmit or receive the signal on the same channel.
The setting is for turning off or activating same CTCSS/DCS codes in
transmit and receive frequencies.
Press 1 on the mic to select the type of CTCSS/DCS:
67Hz-254.1Hz, 000N-777I.
Press
DN or UP on the mic to select CTCSS/DCS code.
Default: OFF
It is an Optional Signaling, this feature is similar to CTCSS/DCS.
When the receiver adds optional signaling, the caller shall transmit
matching signaling. DTMF and 5Tone signaling can be applied for
other advanced features such as ANI, PTT ID, group call, select call,
remotely stun, remotely kill waken etc..
OFF
67Hz-254.1Hz03 RT-CDC
000N-777I
DTMF
5Tone
04 TONEDEC
2Tone
Menu No. Menu Selection Description & Default settings
Default: SQ
This transceiver has 5 squelch modes available. Squelch function is
used for increasing the level of filtering unwanted signal, and free
from disturb.
SQ: You can hear the calling once receives matching carrier.
CTSS/DCS: You can hear the calling when receives matching carrier
and CTCSS/DCS code.
TONE: You can hear the calling when receives matching carrier
+optional signaling.
CT*TO: You can hear the calling when receives matching carrier +
CTCSS/DCS + optional signaling.
CT/TO: You can hear the calling when receives any matching carrier
or CTCSS/DCS or optional signaling.
Default: 2.5K
You can select the desired frequency step.
*Note: Only available in Frequency Mode
Default: Wide (25KHz)
This function is used to set the working bandwidth of the radio.
SQ
CTSS/DCS
05 SIGNAL
06 STEP
07 W/N
2.5/5.0/6.25/10.0
/12.5/20.0/25.0
/30.0/50.0 KHz
Wide: 25KHz,
Narrow: 12.5KHz
OFF *Note: Only available in Channel Mode

17 18
Menu No. Menu Selection Description & Default settings
Default: OFF
CTCSSS /DCS: Channel Busy and lock. When the radio receives a
matched carrier, transmission is prohibited.
OFF: Always allow transmitting no matter what status of receiving
REPEATER: Signaling Busy and lock. When the radio receives a
matching carrier, but CTCSS/DCS does not match, the transmission
is prohibited.
BUSY: Channel Busy and lock. When the radio receives a matched
carrier, transmission is prohibited.
Default: Current channel name
You can edit the name for the current channel.
When you in the CHANNEL NAME menu, press 1 on the mic to
select the place of the character in sequence, then press
DN or UP
on the mic to select the letter or number. The max characters are
8.(a-z, A-Z, 0-9)
*Note: Only available in Channel Mode
Default: OFF
Prohibit the current channel to transmit
CTCSSS /DCS
OFF
REPEATER
BUSY
--------
a-z
A-Z
0-9
11 RPLOCK
12 CHANNEL
NAME
13 TX
INHIBIT
Menu No. Menu Selection Description & Default settings
Default: OFF
TX Noise Compander
Compander function will filter the background noise to enhance audio
clarity, especially in long range communication.
Recommend turn on this function when the signal is weak.
Default: OFF
RX Noise Compander
Block some background noise while receiving, it is obvious when the
signal is weak.
Recommend turn on this function when the signal is weak.
See the Menu 04
Enable to select the group you pre-programmed.
See the Menu 04
Enable to select the group you pre-programmed.
Default: FREQ
The content display at the place of sub-channel
OFF: The sub-channel is empty.
VOLT: Display the current volt
FREQ: Display the current frequency
ON
OFF
ON
OFF
1-100
1-32
OFF
VOLT
FREQ
15 COMP
16 NC
17 5TONE
18 2TONE
19 DSPSUB

19 20
Menu No. Menu Selection Description & Default settings
Default: OFF
Turn on or turn off the Key beep.
Default: OFF
The TOT function is used to prevent a long transmission and limits
the transmit time, TOT is ability to temporarily stops the transmission
if the radio has been used beyond the max pre-set time.
OFF: The TOT function is off.
The time lag of DTMF transmit time
Default: 3
SQL means Squelch, the ability to receive weak signal.
Level 0: Squelch off
Level 1-9: Level 1 is the lowest squelch level, level 9 is the highest
squelch level.
If the squelch is set to the 9, the radio will receive the strongest
signals only.
Default: 5ST
Scan pause time
2SP: The time lag from the active signal end to the next signal start.
5ST, 10ST, 15ST: The time lag from the active signal start to the
selected time end.
OFF
1Min-30Min
50ms~500ms
0-9
OFF
ON
2SP
5ST
10ST
15ST
20 BEEP
21 TOT
22 DTMF
23 SQL
24 SCAN
Menu No. Menu Selection Description & Default settings
Default: 3
You can adjust the LCD screen backlit brightness from 1 to 5.
Default: OFF
This function allows hands-free conversations, just speak to the
microphone closely and the communication will be automatically
activated.
You can choose among 11 levels: Off, 1-9. 1 is the highest level, 9 is
the lowest level.
If this option is set to Off, the VOX function is turned off.
Note: the higher level, the more eminent sensitivity of the microphone.
The VOX function is disabled in SCAN and FM radio mode.
The time lag between the moment of the sound detected to the sound
play.
Default: 1750Hz
TBST means Repeater tone.
You can select different repeater tone to connect the GMRS repeater.
Default: FREQ
Channel display settings
Name: Display channel name
FREQ: Display frequency
CH: Display channel number
1-5
OFF, 1-9
0.5-5s
1000Hz, 1450Hz
1750Hz, 2100Hz
Name
FREQ
CH
25 LIGHT
26 VOX
27 VOX-
DELAY
TBST28
29 DSP-
CHANNEL

21 22
Menu No. Menu Selection Description & Default settings
Set back to the factory default settings.
FACTORY ：Reset back to the factory settings of menu
INITIALIZE：Reset back to the factory settings of menu and channel.
FACTORY
INITIALIZE
30 RESTORE
01: T-CDC
The setting is for turning off or activating CTCSS/DCS code in transmit frequency.
Press 1 on the mic to select the type of CTCSS/DCS: 67Hz-254.1Hz, 000N-777I.
02: R-CDC
The setting is for turning off or activating CTCSS/DCS code in receive frequency.
Press 1 on the mic to select the type of CTCSS/DCS: 67Hz-254.1Hz, 000N-777I.
Press
DN or UP on the mic to select CTCSS/DCS code.
03: RT-CDC
CTCSS/DCS codes are privacy codes, Only when the code of the transmit frequency and receive frequency is
matching you can transmit or receive the signal on the same channel.
The setting is for turning off or activating same CTCSS/DCS codes in transmit and receive frequencies.
04: TONEDEC (Optional Signaling)
It is an Optional Signaling, this feature is similar to CTCSS/DCS. When the receiver adds optional signaling, the
caller shall transmit matching signaling. DTMF and 5Tone signaling can be applied for other advanced features such
as ANI, PTT ID, group call, select call, remotely stun, remotely kill waken etc..
*Note: Only available in Channel Mode
05: SINGAL
This transceiver has 5 squelch modes available. Squelch function is used for increase the level of filtering unwanted
signal, and free from disturb.
SQ: You can hear the calling once receives matching carrier.
CTSS/DCS: You can hear the calling when receives matching carrier and CTCSS/DCS code.
TONE: You can hear the calling when receives matching carrier +optional signaling.
CT*TO: You can hear the calling when receives matching carrier +
CTCSS/DCS + optional signaling.
CT/TO: You can hear the calling when receives any matching carrier or CTCSS/DCS or optional signaling.
06: STEP
You can select the desired frequency step.
The selectable steps are the following: 2.5/5.0/6.25/10.0/12.5/20.0/25.0/30.0/50.0 KHz
*Note: Only available in Frequency Mode
07: W/N
This function is used to set the working bandwidth of the radio.
You can choose between wide or narrow bandwidth.
Wide: 25KHz， Narrow: 12.5KHz
11: RPLOCK
CTCSSS /DCS: Channel Busy and lock. When the radio receives a matched carrier, transmission is prohibited.
OFF: Always allow transmitting no matter what status of receiving.
REPEATER: Signaling Busy and lock. When the radio receives a matching carrier, but CTCSS/DCS does not match,

23 24
the transmission is prohibited.
BUSY: Channel Busy and lock. When the radio receives a matched carrier, transmission is prohibited.
12: CHANNEL NAME
*Note: Only available in Channel Mode
You can edit the name for the current channel.
13:TX INHIBIT
Prohibit the current channel to transmit
15: COMP (Compander)
Compander function will decrease the background noise and enhance audio clarity, especially in long range
communication.
TX Noise Compander:
Compander function will filter the background noise to enhance audio clarity, especially in long range
communication.
Recommend turn on this function when the signal is weak.
16: NC (RX noise compander setting)
RX Noise Compander
Block some background noise while receiving, it is obvious when the signal is weak.
Recommend turn on this function when the signal is weak.
17: 5TONE / 18: 2TONE
Those signaling function similar to CTCSS/DCS signaling. When the receiver adds an optional signaling, the caller
smit matching signaling. DTMF and 5Tone signaling can be applied for other advanced features such as ANI, PTT
ID, group call, select call, remotely stun, remotely kill waken etc..
It is an Optional Signaling, this feature is similar to CTCSS/DCS. When the receiver adds optional signaling, the
caller shall transmit matching signaling. DTMF and 5Tone signaling can be applied for other advanced features such
as ANI, PTT ID, group call, select call, remotely stun, remotely kill waken etc..
*Note: Only available in Channel Mode
19: DSPSUB
The content display at the place of sub-channel
OFF: The sub-channel is empty.
VOLT: Display the current volt
FREQ: Display the current frequency
20: BEEP
Turn on or turn off the Key beep.
21: TOT
The TOT function is used to prevent a too long transmission and limits the tx time: TOT temporarily stops the
transmission if the radio has been used beyond the max pre-set time (for example 15s, 30s, 45s, etc).
22: DTMF
It is an Optional Signaling, this feature is similar to CTCSS/DCS. When the receiver adds optional signaling, the
caller shall transmit matching signaling. DTMF and 5Tone signaling can be applied for other advanced features such
as ANI, PTT ID, group call, select call, remotely stun, remotely kill waken etc..
*Note: Only available in Channel Mode

25 26
23: SQL
SQL means Squelch, the ability to receive weak signal.
Level 0: Squelch off
Level 1-9: Level 1 is the lowest squelch level, level 9 is the highest squelch level.
If the squelch is set to the 9, the radio will receive the strongest signals only.
24: SCAN (Scan pause time)
2SP: The time lag from the active signal end to the next signal start.
5ST, 10ST, 15ST: The time lag from the active signal start to the selected time end.
25: LIGHT
You can adjust the LCD screen backlit brightness from 1 to 5.
26: VOX
This function allows hands-free conversations, just speak to the microphone closely and the communication will be
automatically activated.
You can choose among 11 levels: Off, 1-9. 1 is the highest level, 9 is the lowest level.
If this option is set to OFF, the VOX function is turned off.
*Note: the higher level, the more eminent sensitivity of the microphone. The VOX function is disabled in SCAN and
FM radio mode.
27: VOXDELAY
The time lag between the moment of the sound detected to the sound play.
28：TBST
TBST means Repeater tone.
You can select different repeater tone to connect the GMRS repeater.
With this function you can select 1000Hz, 1450Hz, 1750Hz, 2100Hz repeater tone.
29：DSPCHANNEL (Channel display settings)
Name: Display channel name
FREQ: Display frequency
CH: Display channel number
30：RESTORE
Set back to the factory default settings.
FACTORY : Reset back to the factory settings of menu
INITIALIZE: Reset back to the factory settings of menu and channel.

27 28
Appendix A. - GMRS Frequency Chart (MHz)
CH.No
10
11
462.5625
462.5875
462.6125
462.6375
462.6625
462.6875
462.7125
467.5625
467.5875
467.6125
467.6375
1
2
3
4
5
6
7
8
9
GMRS-1
GMRS-2
GMRS-3
GMRS-4
GMRS-5
GMRS-6
GMRS-7
GMRS-8
GMRS-9
GMRS-10
GMRS-11
Name
CH.Freq.(MHz) CH.No
12
13
14
15
16
17
18
19
20
21
22
467.6625
467.6875
467.7125
462.5500
GMRS-12
GMRS-13
GMRS-14
GMRS-15
GMRS-16
GMRS-17
GMRS-18
GMRS-19
GMRS-20
GMRS-21
GMRS-22
Name
CH.Freq.(MHz)
462.5750
462.6000
462.6250
462.6500
462.6750
462.7000
462.7250
* Channels 8~14 are FRS license free RX only channels.
CH.No
462.5500 / 467.5500
462.5750 / 467.5750
462.6000 / 467.6000
462.6250 / 467.6250
23
24
25
26
RPT-1
RPT-2
RPT-3
RPT-4
Name
CH.Freq.(MHz) CH.No
27
28
29
30
462.6500 / 467.6500
462.6750 / 467.6750
462.7000 / 467.7000
462.7250 / 467.7250
RPT-5
RPT-6
RPT-7
RPT-8
Name
CH.Freq.(MHz)