User Manual

TABLE OF CONTENTS
~\Technical Documentation\System Manuals\FCC-Reports\IP1B-FCCRpt.doc Page 2
SECTION 1: THEORY OF OPERATION .................................................................................. 3
General Block Diagram ........................................................................................................... 3
System Control Block Diagram ...................................................................................... 4
Microcontroller Description................................................................................. 4
Message Processing
.......................................................................................... 4
Synthesizers
....................................................................................................... 5
4-Level FSK Modem Section
.............................................................................. 5
Carrier Detect
..................................................................................................... 6
Host Interface
..................................................................................................... 6
Time-Out-Timer
.................................................................................................. 6
Font Panel Indicators
......................................................................................... 6
Receiver Injection
............................................................................................... 6
VHF Receiver
..................................................................................................... 7
VHF Front-End Section
...................................................................................... 7
45 MHz Receiver Section
................................................................................... 8
Diversity Reception Controller........................................................................................ 9
Principle of Operation
......................................................................................... 9
Receive Baseband Processing
.......................................................................... 9
Exciter .......................................................................................................................... 10
Transmit Baseband Processing
....................................................................... 10
Exciter RF Section
............................................................................................ 11
Power Amplifier Module
................................................................................... 11
SECTION 2: FCC LABEL ....................................................................................................... 12