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Motorola Gp328 Gp338 Detailed 6804110j64 F Manual

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Page 61

Keypad Board And Schematic Diagram5-54.0 Keypad Board And Schematic Diagram
D601M604
M607
D604M610 M613
D603M616 M619
D606M617
M618 M620
M621D605M611
M612 M614
M615D602M605
M606 M608
M609
ZMY0130489-O
R614R615
R616R617
R620
C614 R602 R603
R607 R604
R608 R605
R609 R610
R626J602 18
1 R601R631
C621
R618R649 C616
Q601 Q602Q603
R619
R648 R647
C609C622
R611 R612 R613
R625 R630
E639
E641
E643
E645
R628
E638 E640
E642 E644
E634
R627 R629
C611
C615
R622
R633
R646U602 C610
C619
C620
E637 R623R632
C617
C6182
C612...

Page 62

5-6Keypad Board And Schematic Diagram
R619
1KR620
1K 1K R61879U01D601
79U01D605 D604
79U01
1K R623
1K R621R622
1K 79U01D602D606
79U01 79U01D603 47K R649
PNP Q601 R628
R_W
NU
A0
LCD_SEL
R629R627
0
NU100pFC616 R633
100K
Q602
NPN
100K R646
R648
100K
3K R647 Q603
NPN
R625R630
DATA
CLK
NU
NU
J602-7 J602-13 J602-15 J602-16 J602-18
J602-17
J602-2 J602-3
J602-4
J602-5 J602-6
J602-1 J602-14
J602-11
J602-10 J602-12
J602-8 J602-9 0 R626
0 R631 C614Vddd
SWB+
NU
RESET
100pFC622
100K R632
51pF C64451pF C642...

Page 63

6A-1Section 6A
MODEL CHART AND TEST SPECIFICATIONS (403-470
MHZ)1.0 Model ChartGP Series, UHF, 403-470 MHzModel DescriptionAZH25RDC9AA2GP328403-470MHz4W4CHAZH25RDC9AA3 GP328 403-470 MHz 4WAZH25RDH9AA6GP338 403-470 MHz 4WItem DescriptionX PMUE1563_ GP328 Super Tanapa 403-470 MHz 4W 4CHXPMUE1434_GP328 Super Tanapa 403-470 MHz 4W
X PMUE1407_ GP338 Super Tanapa 403-470 MHz 4WXPMUE1565_GP328 Tanapa 403-470 MHz 4W 4CH
X PMUE1448_ GP328 Tanapa 403-470 MHz 4WXPMUE1406_GP338 Tanapa 403-470 MHz 4W
X PMLE4171_...

Page 64

6A-2Model ChartGP Series, UHF, 403-470 MHzModel DescriptionAZH25RDC9AA3 with
option AZQ203AEGP328 403-470 MHz 4W (w/o keypad, camouflage)AZH25RDC9AA3 with
option AZH64AHGP328 403-470 MHz 4W (w/o keypad, yellow)AZH25RDH9AA6 with
option AZQ203AGGP338 403-470 MHz 4W (keypad, camouflage)AZH25RDH9AA6 with
option AZH64AJGP338 403-470 MHz 4W (keypad, yellow)Item DescriptionXPMUE1923_GP328 Super Tanapa 403-470 MHz 4W
X PMUE1919_ GP328 Super Tanapa 403-470 MHz 4WXPMUE1927_GP338 Super Tanapa 403-470 MHz 4W
X...

Page 65

Specifications6A-32.0 SpecificationsGeneralTransmitter
ReceiverAll specifications are subject to change without notice.UHFFrequency:403-470 MHz
Channel Capacity: GP328 : 4/16 Channels
GP338 : 128 ChannelsPower Supply:7.5 Volts±20%
Dimensions
with Standard
High Capacity
NiMH Battery:
with Ultra High
Capacity NiMH Bat-
tery:137mm x 57.5mm x
37.5mm
137mm x 57.5mm x
40mmWeight:
with Standard
High Capacity
NiMH Battery:
with Ultra High
Capacity NiMH Bat-
tery:420 g
500 g
Average Battery
Life @ (5-5-90 Duty...

Page 66

6A-4Transmitter3.0 Transmitter3.1 General(Refer to Figure 6-1)
The UHF transmitter contains five basic circuits:
1.power amplifier
2.antenna switch
3.harmonic filter
4.antenna matching network
5.power control integrated circuit (PCIC).3.1.1 Power AmplifierThe power amplifier consists of two devices:
1.9Z67 LDMOS driver IC (U101) and
2.PRF1507 LDMOS PA (Q110).
The 9Z67 LDMOS driver IC contains a 2 stage amplification with a supply voltage of 7.3V.
This RF power amplifier is capable of supplying an output...

Page 67

Transmitter6A-53.1.2 Antenna SwitchThe antenna switch circuit consists of two PIN diodes (CR101 and CR102), a pi network (C107, L104
and C106), and two current limiting resistors (R101, R170). In the transmit mode, B+ at PCIC (U102)
pin 23 will go low and turn on Q111 where a B+ bias is applied to the antenna switch circuit to bias the
diodes on. The shunt diode (CR102) shorts out the receiver port, and the pi network, which
operates as a quarter wave transmission line, transforms the low impedance of...

Page 68

6A-6Receiver4.0 Receiver4.1 Receiver Front-End(Refer toUHF Receiver Front End Schematic Diagramon page 6A-18 andUHF Transmitter
Schematic Diagramon page 6A-22)
The RF signal is received by the antenna and applied to a low-pass filter. For UHF, the filter consists
of L101, L102, C102, C103, C104. The filtered RF signal is passed through the antenna switch. The
antenna switch circuit consists of two PIN diodes(CR101 and CR102) and a pi network (C106, L104
and C107).The signal is then applied to a varactor...

Page 69

Receiver6A-7The output of the post-RF amplifier filter which is connected to the passive double balanced mixer
consists of T301, T302 and CR306. Matching of the filter to the mixer is provided by C381. After
mixing with the first LO signal from the voltage controlled oscillator (VCO) using low side injection, the
RF signal is down-converted to the 45.1 MHz IF signal.
The IF signal coming out of the mixer is transfered to the crystal filter (FL301) through a resistor pad
and a diplexer (C322 and L310)....

Page 70

6A-8Receiver4.3 Automatic Gain Control Circuit(Refer toUHF Receiver Front End Schematic Diagramon page 6A-18)
The front end automatic gain control circuit is to provide automatic gain reduction of the front end RF
amplifier via feedback. This action is necessary to prevent overloading of backend circuits. This is
achieved by drawing some of the output power from the RF amplifier’s output. At high radio
frequencies, capacitor C331 provides the low impedance path to ground for this purpose. CR308 is a
PIN...
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