Amateur Radio Relay League (ARRL) and Amateurs in general

1
Ham Radio, Computers, and the Internet

• Dale Tongue
• HL9NP
• AC7NP

2
History of the first Internet

• Marconi
• Father of wireless
• Amateur Radio Relay League (ARRL) and Amateurs in
  general
• Amateur Radio Operators (cutting edge of
  technology) with a goal
• Internet of today
• Al Gore invented this one!

3
Modes of Operation

• Digital Modes
• Radio teletype
• Packet
• Packtor
• Amtor
• Clover
• PSK 32

4
Uses Of Computers InHam Radio Today

• Database (callbook automation)
• Client Server
• Logbook of the world (ARRL feature)
• Local databases and programs (i.e., log-eqf)
• Lots of free software and features like
• Callbook lookup (CD ROM) when callsign entered
• Short/long path direction from geographic
  location
• Contest logging and calculations
• Minimum requirements of FCC met
• OSCAR locating (Kiplerean elements)

5
Uses Of Computers InHam Radio Today (Cont)

• Echolink (similar to Yahoo voice chat)
• Separate database with ham radio callsigns as the
  locator.
• Started out as a voice chat and later added
  xmitters at the computer.
• Still in use with just the computers, but also
  accessible to trojans, hackers, etc.

6
IRLP

• IRLP (Internet Radio Linking Project)
• Uses a dedicated transmitter, connected to a
  dedicated computer (Linux), connected to a
  broadband internet connection
• A simple hand held transceiver, transmits on the
  IRLP frequency, and the IRLP node receives the
  signal, accepts the four digit code, does a DNS
  lookup, and connects to the other node in Lansing
  Michigan
• VOIP then goes back and forth in the radio
  network.

7
200 Mhz CPU Node 6887 Seoul Korea
200 Mhz CPU Node ???? North America
VOIP
8
Demo Time
9
APRS

• Automatic Position Reporting System
• GPS (Global Positioning System)
• TNC (terminal node controller)
• Transceiver (ham radio or otherwise)
• Laptop for displaying information
• APRS software (free)

10
APRS Map (AZ)
11
APRS Hardware
GPS
TNC
Ham Radio
Laptop (Optional)
12
Questions?