Motorola APX 2000 Detailed Service Manual

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: 900 MHz (84012478001) 8-343
Figure 8-160. Receiver Front End Circuit
IF
IF
IF401
1
IF402
1
IN
IN
CTRL_RX_78_LNA_A = 3V (HIGH), LNA'S TURN ON
DC_LIN_1_8V_A
CTRL_RX_78_LNA_A
CTRL_RX_78_SW2 = 0V, 800 PATH SELECTED
SW1 AND SW2 HAVE TO BE OPPOSITE
CTRL_RX_78_SW1 = 0V, 700 PATH SELECTED
OUT_900
GND4
GND3 GND2
GND1
IN_900
IN_800
OUT_800
39PF
RF_RX_7_F1IN
RF_RX_8_F1IN
FARG5ED
RF_RX_7_F1OUT
51
FL401
2
4
6
8
7
5
1
3
C451
R450
39PF
10NH
DNP
C413
L408
51
R451
22K
22K
MUN5212T
Q401
1
3
2
BC858CD
68
33PF
2.7
4.7UF
DC_RX_78_LNA_A
DC_RX_78_LNA_D
C424
Q402
2
61
R404
C427
E401
R413
CTRL_RX_78_LNA_B
BC858CD
3.3K
82K
22K
DC_RX_78_LNA_E
DC_RX_78_LNA_B
DC_RX_78_LNA_C
Q402
5
34
R402
R401
R403
33PF
4.7UF
10NH
C422C421
L401
MMBD352
DNP
1PF
RF_RX_78_LNA1_B
10
30PF
RF_RX_78_SW2
C423
1
3
2
D401
1
3
2
C484
R447
R406
RF_RX_78_LNA1_A
BFR380F
0
10
1PF
0
RF_RX_78_LNA1_F
2.7NH
RF_RX_78_LNA1_C
RF_RX_78_LNA1_E
C426
R405
U406
L403
R456
5PF
10NH
C425
L402
IF
TL_RX_78
IF403
1
IN
DC_LIN_3V
IF
IF407
1
IN
39PF
51
RF_RX_78_SW3
R452
C453
OUT_900
GND4 GND3
GND2
GND1
IN_900
IN_800
OUT_800
39PF
RF_RX_7_F2IN
RF_RX_7_F2OUT
RF_RX_8_F2OUT
51
FARG5ED
FL402
2
4
6 8
7
5
1
3
R454
C455
RF_RX_78_LNA2_E
30PF
10
1PF
RF_RX_78_LNA2_B
C430
C485
R448
1PF
2.4NH
5.1
10
RF_RX_78_LNA2_D
0
8.2PF
BFR380F
R412
C433
C432
U407
1
32
R411
L406
R457
RF_RX_78_LNA2_C
10NH
RF_RX_78_LNA2_F
15NH
L405
L404
DC_RX_78_LNA_G
R410
DC_RX_78_LNA_H
4.7UF
BC858CD
82K
33PF
68
BC858CD
3.3K
22K
C431 C434
Q403
5
34
R409
Q403
2
61
R407
R408
DC_RX_78_LNA_I
4.7UF
33PF
DC_RX_78_LNA_J
C429C428
8.2NH
1.5PF
2.7PF
2.7PF
8.2NH
L489
C488
L491
C490
C492
RF_RX_FE_B2_OUT
IF
IF406
1
OUT
DC_RX_78_LNA_F
E402
RF_RX_78_LNA2_A

Motorola APX 2000 Specifications

General

IP Rating	IP67
Operating Temperature	-30°C to +60°C
GPS	Optional
Bluetooth	No
Frequency Range	700/800 MHz
Power Output	1-5 W (VHF), 1-3 W (700/800 MHz)
Channels	Up to 1, 000
Battery Life	Up to 10 hours (digital)
Digital Protocol	APCO P25
Frequency	VHF: 136-174 MHz, UHF: 380-470 MHz, 700/800 MHz: 764-870 MHz
Power	1-3W (700/800 MHz), 1-5W (VHF)