Transcript Document

Presented by Rod Ekholm Jr.
KC7AAD
Echolink Node Number: 24100
Seminar Objectives
Understanding of
VoIP (Voice over IP)
Relativity to Amateur
Radio
Uses of Echolink
System
Other alternatives
using VoIP
Technology
Hardware
Requirements
Using Echolink
Resources
Voice over IP
•Encryption and Decryption to and from Analog and Digital
Audio - Codec
•Ability to transfer audio over IP to specified IP Address
•Seemless transition of codec – AD/DA
•Vox or COS/COR
The Future of Amateur
Radio
 CW – Morse Code
AM – Amplitude Modulation
FM – Frequency Modulation
SSB – Single Side Band
Digital – Packet, Pactor, Amtor, RTTY, PSK31, …
VoIP – Voice over IP
Alternatives to Echolink
VoIP System
IP Based Software
EchoLink
Windows Based
IRLP
Linux / UNIX Based
EQSO
Windows Based
Computer Interface
Radio Interface
Computer Interface
ONLY!!
Computer Interface
Radio Interface
Sound Card
Parrallel Port
Mic Input
Speaker Output
Sound Card
COM Port
Mic Input
Speaker Output
Sound Card
Microphone
Speakers
Sound Card
COM Port
Mic Input
Speaker Output
EchoLink
Friendly Windows GUI
Usable from Computer OR Radio
Easy configuration for RF Link or Computer user
No Special hardware required
VOX PTT
No AGC
Not able to Connect and Disconnect to and from
Multiple stations ( RF Configuration )
IRLP
COS / COR Activated PTT
Indicator LED’s for visual indicators
May be more stable the other OS’s
Having to learn new OS
Have to have 24/7 connection
EQSO
Multiple Chat Rooms.
Don’t have to be licensed ham to use.
Password Protected Rooms.
RF Links available.
Can run more than 1 VoIP application
at once.
Interfaces
Echolink Interfaces
oUses Standard 1/8” Mono
Connectors
oEasily Re-Programmable
PIC Chip for Updates
oNothing too Complex
oNothing Hidden!
oStandard 8 Pin
Microphone connectors
oRJ-45 Modular Connector
oSwitches on front panel
for ON/OFF
oNice installation
presentation
Uses Standard Connectors for Interfacing
Small breadboard area for redesigning
Uses readily available components
Indicator Lights for Status of Operation
Status Lights for Indication of Activity
Small design for Easy installation into
housing
Inputs and Outputs for External devices
Setup
Familiar Look to
other Applications
Easy navigation
through Menus or
Toolbar Icons
Help files as well as
newsgroups for
support
Controls to help
make audio
seemless
Point vales given to
ensure proper
settings every time.
For more info:
Rod Ekholm Jr.
KC7AAD
[email protected]
http://www.compfun.net/kc7aad
Echolink Node Number 24100
444.125MHz ( 100.0 Hz PL )
(509) 468-7057
Presentation By:
Rod Ekholm Jr. – KC7AAD
October 2002