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NOTES:
B+
1. UNLESS OTHERWISE STATED RX DC VOLTAGES ARE MEASURED WITHOUT RF INTO J401. |
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| E104 |
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2. RX RF VOLTAGES IN DBM ARE MEASURED WITH 1.5PF IN SERIES WITH 50 OHM ADAPTER | NC |
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OF THE RF MILLIVOLTMETER & A RF LEVEL OF |
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3. VOLTAGES IN mV ARE MEASURED WITH A X10 SCOPE PROBE. | C120 |
| C102 | C103 |
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4. THESE LEVELS MEASURED BY REMOVING R52. | * | * | 10uF |
5. MEASUREMENTS MADE ABOVE CROSSOVER FREQUENCY.
6. MEASUREMENTS MADE BELOW CROSSOVER FREQUENCY.
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| 2 RF_OUT | RF_IN | 5 |
| 7. * = NOT PLACED |
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| 6.5Vdc (TX) | |||
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| U104 |
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| C132 |
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| 1 |
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| 6 |
| 8.2pF |
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| COUPLER |
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| C121 |
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| R114 |
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| 5V_REG |
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| 100pF |
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| 3.9Vdc (TX) | CR101 |
| 10K |
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| R126 | R127 | 7 8 9 | 10 |
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| 0Vdc (RX) | 2 |
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| C155 |
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| 3 |
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| C118 |
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| 51 | 30 |
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| R139 |
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| C133 | 100pF | 1 |
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| DAC | CLK |
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| 0.1uF |
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| 100K |
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| 1.8pF |
| NC |
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| C156 |
| 3.2Vdc, 450MHz | |
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| 3.5Vdc, 512MHz | ||
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| CR103 |
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| R110 |
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| C3 | B2 | A2 | A3 B3 |
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| 1uF |
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| 3.6Vdc, 520MHz | |||||||||||
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| 2 |
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| 2.2K |
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| SEL | CLK |
| DATA | 5V | RESET |
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| 5.6K |
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| 3 |
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| R111 |
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| 1 |
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| D1 |
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| 5Vdc (TX) | R129 |
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| SW2 |
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| 4.7K | |||
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| B5 |
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| EN_BIAS | A4 |
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| 0Vdc (RX) | ||||
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| NC | NC |
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| C119 |
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| C117 |
| E2 | SW_C |
| U102 | TX_DA | C4 |
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| R113 | ||||
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| 100pF |
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| 100pF |
| D4 |
| D/A IC |
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| B1 |
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| 33K |
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| REF_DA |
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| SC4 |
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| 4.9Vdc (RX) |
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| D5 |
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| C2 |
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| D2 | R_T |
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| SC3 |
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| Q105 | ||||
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| 0Vdc (TX) |
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| SC1 |
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| ENANT | RXDA |
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| Q104 |
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| SB+ |
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| Q107 |
| 0Vdc, 520MHz |
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| GND2 | GND1 |
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| 0Vdc (RX) | 1 | |||||||
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| SC2 SW1 |
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| 0.55Vdc 450MHz |
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1 |
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| 3 | 2 |
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| Q108 | R115 | C1 E3 | E4 D3 | B4 C5 |
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| 180K |
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| C154 |
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| C145 | 5 |
| 1 | NC |
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| NC |
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| R116 |
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| 100pF |
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| 100pF |
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| 130K |
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| 5V_REG |
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| 4 |
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| 2 | |||
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2 |
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| 5 | 1 NC |
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| 0Vdc (RX) | |
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| 5Vdc (TX) | |
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| 6.5Vdc (TX) |
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| C153 |
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| L105 |
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| 270nH |
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| R199 |
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| 100pF |
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| L107 |
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ANTENNA |
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| 0 |
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| R128 |
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| 150nH |
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| 4.9Vdc (RX) |
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| 47K |
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| 6.7Vdc (RX) |
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| 0.1Vdc (TX) |
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| S101 |
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| CR108 |
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| L128 |
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| L126 |
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| 5.8Vdc (TX) |
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| RF | SWITCH |
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| 11.03nH |
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| 11.03nH | C147 |
| C137 |
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| L127 |
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| 100pF |
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P401 | J401 |
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| 100pF |
| L122 |
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| 11.03nH |
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| 2 |
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| 270nH |
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| GND |
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| C138 |
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| C141 | |||
G1 |
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| C151 | C150 |
| C149 | C148 |
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| 100pF |
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| 100pF | ||||
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| 4 | TO UNIVERSAL | 3pF | 15pF |
| 20pF | 4.3pF |
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| L123 |
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G2 |
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| 8 | CONNECTOR |
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| CR109 |
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| 220nH |
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| EXTERNAL |
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| L108 |
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P402 | 1 |
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| ANTENNA |
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| GND | GND1 GND2 | GND3 |
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| 150nH | L121 |
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TO UNIVERSAL |
| C114 |
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| 270nH |
| 7.4Vdc (RX) |
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CONNECTOR |
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| 5 | 6 | 7 | 9 |
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EXT. ANT. |
| 100pF |
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| C140 |
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| 2 |
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| R119 |
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| 4700pF |
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| 1MEG |
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| 7.4Vdc (RX) |
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| R22 |
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| FREQ | VR (RX) |
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| L8 | R26 | |
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| 10K |
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| 470nH | * | |||
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| 450MHz | 1.14Vdc |
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| C86 |
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| 512MHz | 3.16Vdc |
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| 6 |
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| CR11 |
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| 100pF |
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| 520MHz | 3.50Vdc |
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| Vcc |
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| L9 |
C87 |
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| R23 |
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| 2 |
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| 7 |
| 39nH | |||
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| IN |
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| OUT |
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100pF |
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| L32 |
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| 10K |
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| RF AMPLIFIER |
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| 11.03nH |
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CR6 |
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| CR8 |
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| C10 | L6 |
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| 0.6Vdc | 4 |
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| U1 |
| 5 | 2.4Vdc |
| ||
| CR7 |
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| CR9 | 56pF |
|
| ABP |
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| AG2 |
| |||||||||||
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| 47nH |
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| GND1 | GND2 | GND3 |
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| R27 |
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| C1 |
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| 5.1pF |
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| 1 | 3 | 8 |
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| 10 |
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L30 |
| L31 |
| C2 |
| C3 | L34 |
| L35 |
|
| L37 | C9 | L7 |
| C13 |
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| R36 | C11 | |
4.22nH |
| 4.22nH |
| 6.2pF | 4.3pF | 4.22nH |
| 4.22nH |
|
| 12nH | 10pF | 220nH |
| 22uF |
|
| C72 |
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| * | .01uF | ||
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| 100pF |
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| E101 |
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| L101 |
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| 57R01 |
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| 270nH |
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| 2.2Vdc (TX) |
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| C105 |
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| C104 | C101 |
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| 100pF |
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| C106 |
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| Q110 |
| B+ |
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| 3 |
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| 2 |
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| 4.7uF |
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| 100pF | .022uF |
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| POSB |
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| VCNTRL |
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| R130 |
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| P.A. |
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| * |
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| U105 |
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| 4 | RFOUT | 85Y10 |
| RFIN | 1 |
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| C116 | NC |
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| NC |
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| R107 |
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| L103 |
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| 6.8Vdc (TX) |
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| * |
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| * |
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| * |
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| 7.5Vdc (RX) |
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| ||||||||||||||
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| L102 |
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| C108 |
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| * |
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| C107 |
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| C127 |
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| * |
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| * B+ |
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| * |
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| Q101 |
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| 4.9Vdc (TX) |
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| * |
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| NC NC |
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| 0Vdc (RX) |
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| C109 |
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| C110 | * |
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| D3 E4 E3 C1 |
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| * |
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| A3 | RE_DET | BPOS | RECV5V | PABIAS | BIASRT |
|
| PA_CNTL |
| B5 |
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| E2 | ICATH_2 |
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| PA_OUT |
| B4 |
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| D1 | TX12 |
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| U101 |
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| ANODE_2 |
| C2 | NC |
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| C5 | DA_REF |
|
| TX ALC IC |
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| RX_1 |
| D2 | NC |
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| D5 |
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| TEMP_SENSE |
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| |||||
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| 5Vdc (TX) |
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| 2.45Vdc (TX) |
| B1 | ANT_SW_BS |
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| 5V_TX |
| C4 |
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| ||||||||||||||
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| 0Vdc (RX) |
| R106 |
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| B2 | CATH_1 |
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| IN | INT_CAP_OUT |
| C3 |
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| |||||||||||||||
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| C123 |
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| 3.3K |
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| ANODE1 | GND | ENBIAS | CAPINT_ |
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| ||||||||||
5 |
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| 0.1uF |
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| C139 |
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| 1.5Vdc (TX) |
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| |||||||||||||||
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| * |
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| R102 |
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4 |
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| A2 B3 D4 A4 |
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| 4.7K |
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| U103 |
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| C115 |
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| 2.8Vdc (TX) |
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| .033uF |
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3 |
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| 5Vdc | 1 | OUT | 5V REG | IN | 3 |
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| 0Vdc (RX) |
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| GND |
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| C157 |
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| C128 |
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| 3.3Vdc (TX) 0.1uF |
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| 50K | |||||||||||||
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| C126 |
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| C113 | C111 | ||||||||||
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| 1uF |
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| 3.3uF |
| 1 |
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| 100pF | 100pF | RT101 | ||||||||||
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| TP10 |
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C135
100pF
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| L16 |
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| R52 |
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| 470nH |
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| 100 |
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| C16 |
| C12 |
| C17 |
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| 30pF |
| 100pF |
| 0.1uF |
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| 4.9Vdc (RX) |
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| 0.1Vdc (TX) |
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| 0.4Vdc (RX) | 0Vdc (TX) |
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| C31 | |
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| C15 |
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| .01uF | |||
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| 100pF |
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| C83 | C85 | R7 |
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| 100pF | 10uF |
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| 100 |
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| (NOTE 4) |
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(NOTE 4) |
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| C4 | C5 | C6 | C7 |
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| 3 |
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L10 | L14 | L15 |
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| BVDD |
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9.1pF | 7.5pF | 5.6pF | 15pF |
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18nH | 11.03nH | 11.03nH | 4 | 3 | 8 |
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| 11 | ||||||
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| RF1 |
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| IFN | |||||||||
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| 7 |
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| U2 |
| 12 | |||
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| C92 |
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| 2 | 14 | RF2 |
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| IFP | 2 | ||
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| MIXER |
| BBP | 4 | |||
C18 | C19 | L11 | L12 | L13 |
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| C93 | 5 | 1 |
| LOIN | BUFFER | BDIV |
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10pF | 6.8pF | 11.03nH | 27.42nH | 19.61nH | 5.1pF |
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| GND | GND1 | GND2 | GND3 | GND4 |
| GND5 |
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| 4.3pF | T1 |
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| C99 |
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| 1 | 5 | 6 | 9 | 10 | 13 |
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| C88 | C89 | C90 | C91 | C94 | 13pF | C98 |
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| 100pF | 6.8pF | 15pF | 10pF | 16pF | 20pF |
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TX_LO
LCK
DAC
DAC
CLK
CLK
D
DATA
SB+
SB+
B+
B+
5V_REG
5V_REG
AGC
1 | T2 | 5 |
| ||
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| IF |
2 |
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3 |
| 4 |
4Vdc | 1Vdc |
C84 C82
.01uF .01uF
RX_LO
NUE7265B, NUE7266B, NUE/PMUE7272B, AND NUE7274B UHF
68TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 1 of 2)