What is your TNC doing? - Table of Contents

Chapter 5 Table of Contents | Read Chapter 5 | Order Book - Dealer List

Chapter 1 - The Computer
Digital Communications
Troubleshooting

Chapter 2 - The Computer to TNC Cable
Flow Control
RS-232 as Implemented for Packet Radio
RS-422 Talking to RS-232
TTL Levels
A Word about the Cable
Troubleshooting

Chapter 3 - Terminal Program and TNC Settings
How fast?
How long is a character?
What is Parity?
Can stations using different parity talk to each other?
When are typed characters sent to the TNC?
When are typed characters displayed on the screen?
How are typing mistakes corrected?
Which commands affect flow control?
What is the return key?
How much should be typed before pressing the return key?

Chapter 4 - Inside the TNC
Transmitting a Packet
Recommended TNC Settings
Receiving a Packet
Throughput

Chapter 5 - TNC to Radio Wiring and Adjustments
Chapter 5 Table of Contents
TNC to Radio
Transmit Signal
Receive Signal
Push-To-Talk Circuit
Ground
Radio Characteristics
Troubleshooting
Wiring Diagrams Index (expanded from book)

Chapter 6 - Sample QSOs
Version 1 QSO
Version 2 QSO
Other Frames
Version 1 vs. Version 2
Troubleshooting

Chapter 7 - The AX.25 Frame
Flags
Address Field
Control Byte
PID (Protocol Identifier)
Information Field
FCS (Frame-Check Sequence)
NRZI (NonReturn-to-Zero Inverted)

Chapter 8 - Guide to Troubleshooting
Trouble talking to TNC
Garbage characters
Can hear packets, but nothing displays on the screen
Problems making a connect
Problems getting information transferred after establishing a connect
Can connect to some stations, but not to others
Where to go for additional help

Index

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