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Kenwood Manuals
Repeater
NEXEDGE NXR-901
Service manual
Kenwood NXR-901 Service Manual page 174
900mhz digital base-repeater ocxo unit kxk-3 m3
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:
Instruction manual
(6 pages)
,
Instruction manual
(8 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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HooK_RXD_SCM
AMP_SW
SCM_EN
AF_MUTE
iNSP_SW
EVOL_DATA
PTT_AM16C
EVOL_CLK
GND
EVOL_LD
TAAD_SW
TA_SW
BEEP_SW
PATH_SW
RXAD_SW
MiC_SW
MiCAD_SW
TD_SW
Lo_VoL_DET
GND
PTT_TXD_SCM
4
Hi_VoL_DET
GND
50MPU_A_GND
50MPU
50MPU_A_GND
DC50
DC50
DC50
DC50
33MPU_A_GND
33MPU
33MPU
33MPU_A_GND
50MPU_A
33MPU_A
33SH
50MPU_CoNT
NC
E_PTT_SH
SC_SH
GND
SRX0_ATX0
STX0_ARX0
GND
RF_PTT
TX_STATE
QT_DQT
RADIO_ERR
5
GND
ADSP_CK_SFT
TRUNKiNG
A16C_CK_SFT
BER_DAT
BER_CLk
GND
SYS_RST
6
NC
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
NC
33
34
35
36
CN402
1
2
3
4
5
5.0V
6
7
8
9
3.3V
10
11
12
13
5.0V
3.3V
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
CN300
R302
0
2nd IF 456kHz
3.3V
3.3V
VOLTAGE
DETECTOR
C379
0.1u
VOLTAGE PROTECTOR
R371
0
R932
0
R372
0
R933
0
R373
0
R948
0
R374
0
R946
0
R375
0
R376
0
R916
0
R377
0
R378
0
R379
0
R380
0
R381
0
R382
0
R383
0
R384
0
R385
0
R386
0
BUFFER
IC330
TC7SH126FU-F
1
G
VCC
SW
2
INA
Q309
3
GND
oUTY
SSM6N16FE-F
1
6
R936
2
5
R935
3
4
R934
R340
0
L301
L302
L303
L304
L305
L306
L307
L300
R341
0
R342
0
R343
0
R344
0
R345
0
R346
0
R347
0
R348
0
R349
0
R350
0
R352
0
0
R353
R354
0
R949
0
R950
0
R356
0
33MPU
DC50
R388
0
VOLTAGE
REGULATOR
5.0V
*
IC329
VOLTAGE
REGULATOR
L314
D702
1SS355
AMP_SW
SCM_EN
R951
AF_MUTE
100k
EVOL_DATA
BUFFER
EVOL_CLK
IC728
TC7SH126FU-F
4
EVOL_LD
oUTY
GND
TAAD_SW
INA
5
TA_SW
VCC
BEEP_SW
PATH_SW
RXAD_SW
C834
MiC_SW
0.1u
MiCAD_SW
TD_SW
Lo_VoL_DET
HooK_RXD_SCM
5
4
PTT_SH
100k
470k
470k
Hi_VoL_DET
R395
0
R394
0
DC50
33MPU_A_GND
33MPU
33MPU
50MPU_A
33MPU_A
33SH
50MPU_CoNT
E_PTT_SH
SC_SH
SRX0_ATX0
STX0_ARX0
RF_PTT
TX_STATE
QT_DQT
RADIO_ERR
ADSP_CK_SFT
TRUNKiNG
A16C_CK_SFT
ADSCLK
BER_DAT
ADSDO
BER_CLK
ADCS
SYS_RST
RESET_D
33CF
L324
CONTROL SW
Q303
LTA044EUBFS8
R389
33SH
0
33CF_CoNT
R390
33MPU
3.3V
0
33SH
33SH_CoNT
33SH
33SH
33MPU
3
2
1
G
A/D
CONVERTER
IC312
ADCS7476AIMF
4
3
SCLK
VIN
R425
0
5
2
SDATA
GND
6
1
R442
68k
CS
VDD
C494
0.1u
R423
0
C495
1u
VOLTAGE
REGULATOR
IC306
BA15BC0FP
1
3
IN
oUT
GND
2
VOLTAGE
REGULATOR
IC307
XC6201P152P-G
3
1
VIN
VoUT
VSS
2
DC SW
D300
1SS388
Q302
2SA1955A-F
POWER SW
Q301
LTC014EUBFS8
DC SW
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Table of Contents
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