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57

FET

FDS4435BZ

SO-8

FAIRCHILD

FDS4435BZ

Q6B, Q8B

58

RF FET

BC868

SOT-89

Philips

BC868

Q7B

59

FET

IRLML5203PBF

SOT-23

IR

IRLML5203PBF

Q9B, Q10B

60

Digital triode

DTC114EKA

SOT-23

ROHM

DTC114EKA

Q26

61

Resistance

51R

1206

Yageo

RC1206FR-0751R

R1B, R2B

62

Resistance

330R

0603

Yageo

RC0603FR-07330R

R3B, R15B, R17B

63

Resistance

330R

1812

Yageo

RC1812FR-07330R

R4B, R11B

64

Resistance

1k

0603

Yageo

RC0603FR-071K

R5B, R12B, R14B, R16B, R30B, R47B,

R51B, R65B

65

Resistance

3.3R

0603

Yageo

RC0603FR-073R3

R6B, R10B

66

Resistance

220R

1206

Yageo

RC1206FR-07220R

R7B

67

Resistance

220R

0603

Yageo

RC0603FR-07220R

R8B

68

Resistance

220R

1812

Yageo

RC1812FR-07220R

R9B

69

Resistance

0603

Yageo

RC0603FR-07

R13B

70

Resistance

1.5k

0603

Yageo

RC0603FR-071K5

R18B

71

Resistance

4.7R

1206

Yageo

RC1206FR-074R7

R19B

72

Resistance

10k

0603

Yageo

RC0603FR-0710K

R20B, R23B, R32B, R33B, R35B, R36B,

R49B

73

Resistance

5.1k

0603

Yageo

RC0603FR-075K1

R21B, R41B

74

Resistance

5.1R

0603

Yageo

RC0603FR-075R1

R22B, R26B

75

Resistance

1.8k

0603

Yageo

RC0603FR-071K8

R24B, R25B

76

Resistance

680R

0603

Yageo

RC0603FR-07680R

R27B, R34B

77

Resistance

150R

0603

Yageo

RC0603FR-07150R

R28B

78

Resistance

100k

0603

Yageo

RC0603FR-07100K

R29B, R31B, R42B, R45B

79

Resistance

15k

0603

Yageo

RC0603FR-0715K

R43B

80

Resistance

100R

0603

Yageo

RC0603FR-07100R

R44B, R46B, R48B

81

Resistance

30k

0603

Yageo

RC0603FR-0730K

R50B

82

Resistance

0603

Yageo

RC0603FR-07

R52B

83

Resistance

3.3k

0603

Yageo

RC0603FR-073K3

R54B

84

Resistance

51R

0603

Yageo

RC0603FR-0751R

R55B

85

Resistance

35k

0603

Yageo

RC0603FR-0735K

R56B

86

Resistance

175k

0603

Yageo

RC0603FR-07175K

R58B

87

Resistance

75k

0603

Yageo

RC0603FR-0775K

R59B

88

Resistance

3.9k

0603

Yageo

RC0603FR-073K9

R61B, R62B, R63B, R64B, R66B

89

Resistance

2k

0603

Yageo

RC0603FR-072K

R67B

90

Resistance

0603

Yageo

RC0603FR-07

R69B

91

Network

Resistor

100k

8P4R

Yageo

YC164-JR07100K

RP1B, RP2B

92

Adjustable-re

sistance

5k

3X3 SMT

domestic

-

RW1B, RW2B, RW3B, RW4B

93

Magnetic

inductance

74270176

Through-Hole

HOMEMA

DE

-

T1B, T7B

94

Transformer

7427056

Through-Hole

HOMEMA

DE

-

T2B

95

Magnetic

BN-43-302

Through-Hole

HOMEMA

-

T3B

Содержание X108G

Страница 1: ...he external power before opening case Do not forcibly remove any parts to avoid any damage Please use insulated screwdriver to adjust the circuit to avoid short circuit Do not turn on the radio for a...

Страница 2: ...0 45 180 mm Not including knob holder etc TX TX Power 15W 13 8V Modulation SSB Balanced modulation AM Low level modulation Spurious suppression 40dBc Carrier suppression 45dBc Selectivity SSB 2 2kHz 6...

Страница 3: ...Small signal front panel Part 2 Inside Circuit U17 Microprocessor RW4 Mic amplifier gain adjustment Intermediate frequency amplifier unit U10 Transmit Mixer U5 Receive Mixer...

Страница 4: ...Small signal back panel Local oscillator module BPF module...

Страница 5: ...U17B VC Voice Compressor Steady voltage power Final RF power amplifier Power standing wave detector...

Страница 6: ...he first IF amplify This amplified IF signal outputs to intermediate frequency crystal filter IFCF by T5 Q6 is NB control switch which controls the conducting of the Q21 3 1 4 IFCF sets The radio is b...

Страница 7: ...ts of U15B and U17B U15B SSM2167 has voice amplification and voice compression function and the compression ratio is switched by U15B 3 2 2 Modulator circuit The microphone amplified signal enters the...

Страница 8: ...t of antenna port and reflected power U5B buffs and amplify the tested output signal then sent to the microcontroller for processing and display the power and SW value 3 2 10 Automatic power control c...

Страница 9: ...nd voltage generator consists of microprocessor and U25 and U26 3 4 Power unit There are 2 groups main power supply for X108G 9V and 5V which are generated by U1B LM2940T 9 0 and U2B LM7805 on the pow...

Страница 10: ...r Measuring range 0 001 10A External speaker 8 2W All equipment has been measured and tested within the period of validity 4 2 Small signal board debugging 4 2 1 The small signal board has used the ne...

Страница 11: ...Setting specs RF signal source Frequency 14 251MHz initial output amplitude 10uV Audio analyzer SINAD test 1 Set the receiving frequency of X108G to be 14 25000MHz USB mode 2 Open PRE close ATT and AG...

Страница 12: ...close ATT and AGC and SQL 3 Measure the voltage of NB unit test point with digital multimeter 4 Adjust NB amplify IF transformerT16 to make the test point voltage to be minimum around 1 55V 5 Turn off...

Страница 13: ...tude by the each signal intensity as displayed on a screen and then press the SET button to enter the next level of signal settings 6 After setting all the signal levels press the SAVE button to save...

Страница 14: ...nplug the TX signal line from small signal board to the power amplifier board 4 Measure the amplitude of the test point TP10 with oscilloscope 5 Press PTT of hand microphone adjust PotentiometerRW4 to...

Страница 15: ...Required machines and its settings Machine Setting specs Audio frequency generator Frequency 1kHz Amplitude 100mV Vpp Spectrum analyzer Central frequency 14 25MHz BW 10MHz 50W RF load 1 Set the recei...

Страница 16: ...z BW 5MHz 50W RF load 1 Set the receiving frequency of X108G to be 14 25000MHz CW mode power 20W 2 Connect the RF load to the antenna interface of the X108G 3 Press the CW key to start the transmit me...

Страница 17: ...a dedicated test microphone to X108 disconnect the microphone input then press PTT to start the transmitting and record the current ammeter value as a baseline reading 6 Solder four debug solder join...

Страница 18: ...pF 0805 Murata GQM2195C2E750GB12 C26B C52B 12 capacitor 30pF 0805 Murata GQM2195C2E300GB12 C29B 13 capacitor 150pF 0805 Murata GRM21A5C2D151JW01 C30B 14 capacitor 27pF 0805 Murata GRM21A5C2D270JW01 C3...

Страница 19: ...1 Magnetic inductance T37 2 Through Hole HOMEMA DE L5B L6B 42 Magnetic inductance T37 2 Through Hole HOMEMA DE L7B L8B 43 Magnetic inductance T37 2 Through Hole HOMEMA DE L9B L10B 44 Magnetic inductan...

Страница 20: ...geo RC0603FR 075R1 R22B R26B 75 Resistance 1 8k 0603 Yageo RC0603FR 071K8 R24B R25B 76 Resistance 680R 0603 Yageo RC0603FR 07680R R27B R34B 77 Resistance 150R 0603 Yageo RC0603FR 07150R R28B 78 Resist...

Страница 21: ...n board parts NO Item SPECS PACKAGE BRAND MPN Designator 1 Capacitance 47uF 3225 Murata GRM32ER7YA476KE15L C1 2 Capacitance 100nF 0603 Murata GRM188R71H104KA93 C2 C3 C4 C5 C7 C8 C9 3 Capacitance 1nF 0...

Страница 22: ...RM1552C2A100GA01 C39 C44 8 Winding inductance 100uH 0805 TDK GLF2012T101K L1 L2 9 High Q Winding inductance 270nH 1210 TDK NLV32T 271J PF L3 L4 10 BTB Connector Spacing 0 8mm SMT domestic P1 11 RF Con...

Страница 23: ...72 C182 C188 C192 C201 C212 C215 3 Capacitance 2 2pF 0603 Murata GRM1885C2A2R2BA01 C3 C110 4 Capacitance 68pF 0603 Murata GRM1885C2A680JA01 C5 C10 C23 C36 C42 C69 C121 C164 5 Capacitance 1nF 0603 Mura...

Страница 24: ...Capacitance 2 2uF 0805 Murata GRM21BR71E225ME11 C179 C180 28 Capacitance 330pF 0603 Murata GRM1885C2A331JA01 C196 29 Capacitance 10pF 0603 Murata GRM1885C2A100JA01 C204 30 Capacitance 220pF 0603 Murat...

Страница 25: ...mm 2P domestic P7 54 BTB Connector spacing0 8mm SMT domestic P10 55 Connector MINI DIN6 Through Hole domestic P11 56 Digital triode DTC114EKA SC 59 ROHM DTC114EKA Q1 Q2 Q8 Q9 Q11 Q12 Q23 Q24 Q26 57 FE...

Страница 26: ...k 0603 Yageo RC0603FR 0747K R18 R138 R151 R152 78 Resistance 2 7k 0603 Yageo RC0603FR 072K7 R21 R29 R35 R46 R68 R81 R89 R90 R99 R131 79 Resistance 1M 0603 Yageo RC0603FR 071M R22 80 Resistance 220k 06...

Страница 27: ...sformer 1802 5x5 SMT T5 T16 112 IF transformer 1404 5x5 SMT T7 113 Single Pin Header 2 54mmspacing SIP2 domestic TP3 TP8 114 IC BU4S66G2 SOT 23 5 ROHM BU4S66G2 U1 115 IC LM321MF SOT 23 5 TI LM321MF U2...

Страница 28: ...ule 80m 160m module Xiegu XGM1 139 Xiegu module 40m 60m module Xiegu XGM2 140 Xiegu module 20m 30m module Xiegu XGM3 141 Xiegu module 15m 17m module Xiegu XGM4 142 Xiegu module 10m 12m module Xiegu XG...

Страница 29: ...Part 6 PCB Small signal board TOP...

Страница 30: ...Small signal board BOTT...

Страница 31: ...AMP Power board TOP...

Страница 32: ...AMP Power board BOTT...

Страница 33: ...Part 7 Radio block diagram...

Страница 34: ...T SW Keyer J5 PJ 3 5 ST SW R121 100R R122 100R LB4 600R LB6 600R C141 1nF C145 1nF L51 1uH R197 100R R196 100R C64 100nF R73 NC L23 1uH L24 1uH C148 100nF C149 100nF C150 100nF C151 100nF C152 100nF C...

Страница 35: ...F C38B 120pF Fo 14 5MHz L9B T37 2 11T L10B T37 2 11T C48B 220pF C49B 100pF 3 5 1 3 4 5 6 1 2 K11B HRB1 S DC5V 5 5 C41B 12pF C42B 12pF C47B 100pF Fo 21 5MHz L13B T37 2 8T L14B T37 2 9T C54B 68pF C55B 1...

Страница 36: ...WWW CQXIEGU COM XIEGU COMMUNICATIONS...

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