Table of contents
1. ....................................................................TECHNICAL SPECIFICATIONS! 1
• .........................................MEASURE IN ACCORDING TO FTZ_17R_TR_2049! 1
2. .............................................................................CIRCUIT DESCRIPTIONS! 2
• .........................................................................................TRANSMISSION UNIT! 2
...........................................................................................PRE-AMPLIFIER! 2
................................................................................RF POWER AMPLIFIER! 2
......................................................................................ANTENNA SWITCH! 2
......................................................................................HARMONIC FILTER! 2
.................................................................APC (AUTO POWER CONTROL)! 2
...................................................................HIGH/LOW POWER CONTROL! 2
• ...............................................................................................RECEPTION UNIT! 2
..................................................................................................FRONT-END! 2
....................................................................................................BACK-END! 3
• ............................................................................FREQUENCY SYNTHESIZER! 3
..............................................................................................SYNTHESIZER! 3
...............................................................................................................VCO! 3
• .......................................................................................VOLTAGE MULTIPLIER! 3
• .........................................................................................................AUDIO UNIT! 3
..............................................................................................AUDIO FILTER! 3
.......................................................................................AUDIO AMPLIFIER! 3
...................................................................SQUELCH CONTROL CIRCUIT! 3
......................................................................................................TX AUDIO! 4
• ..............................................................................MICRO-CONTROLLER UNIT! 4
• .............................................................................................DIGITAL CONTROL! 4
...........................................................................POWER SUPPLY CIRCUIT! 4
3. ..................................................................................................ALIGNMENT! 5
• ............................................................................................GETTING STARTED! 5
......................................................................................VCO ADJUSTMENT! 8
...........................................................FREQUENCY ERROR ALLGNMENT! 8
...........................................................................DEVIATION ADJUSTMENT! 8
...........................................................................HIGH POWER CHECKING! 8
............................................................................LOW POWER CHECKING! 8
• .......................................................................................................SENSITIVITY! 8
...........................................................................................AUDIO OUTPUT! 8
............................................................................SQUELCH ADJUSTMENT! 8
......................................................................RSSI SIGNAL LEVEL CHECK! 8
.......................................................................BATTERY LOW DETECTION! 8
4. ........................................................................................BLOCK DIAGRAM! 9
• ......................................................................................LOGIC CONTROL UNIT! 9
• ...............................................................................................................RF UNIT! 9
5. ..................................................................................................SCHEMATIC! 9
..........................................................................................POWER SUPPLY! 9
..................................................................................................FRONT-END! 9
..........................................................................................1ST IF & MIXER! 10
.................................................................................................SECOND IF! 10
............................................................................................AUDIO FILTER! 10
.....................................................................................AUDIO AMPLIFIER! 10
.............................................................................................MODULATION! 11
...........................................................................................SYNTHESIZER! 11
............................................................................................................VCO! 11
................................................................................................TX BUFFER! 11
.....................................................................RF POWER AMPLIFICATION! 12
• ...............................................................................................LOGIC CONTROL! 13
6. ...................................................................................................PCB VIEW! 14
• ....................................................................................................LOGIC BOARD! 14
• ...........................................................................................................RF BOARD! 15
7. ..................................................................................BILL OF MATERIALS! 16
8. .................................................................................................EXPLOSION! 23