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description
HAM RADIO UNIVERSITY 2003
Presentation by: Len Signoretti N2LEN
January 19, 2003
Seminar Objectives
Understanding of VoIP (Voice over IP)Relativity to Amateur RadioUses of Echolink SystemOther 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
•Seamless 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
Sound CardM ic rop h on e
S p eakers
Sound CardC O M P ortM ic In p u t
S p eaker O u tp u t
C om p u te r In te rfaceR ad io In te rface
E ch oL in kW in d ow s B ased
Sound CardP arra lle l P ort
M ic In p u tS p eaker O u tp u t
C om p u te r In te rfaceO N L Y !!
IR L PL in u x / U N IX B ased
Sound CardC O M P ortM ic In p u t
S p eaker O u tp u t
C om p u te r In te rfaceR ad io In te rface
E Q S OW in d ow s B ased
I P B a sed S oftwa r e
V oI P S ystem
EcholinkFriendly Windows GUI
Easy configuration for RF Link or Computer user
Usable from Computer OR Radio
No Special hardware required
VOX PTTNo AGCNot able to Connect and Disconnect to and from Multiple stations ( RF Configuration )
IRLPCOS / 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
THE “ULI” BOARD
oUses Standard 1/8” Mono Connectors
oEasily Re-Programmable PIC Chip for Updates
oNothing too Complex
oNothing Hidden!
The WB2REM Interface board http://www.ilinkboards.com/
The WB2REM\G4CDY “ULI” BOARD
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
VA3TO interface board http://www.ilinkca.com/
WIRES II http://www.vxstd.com/en/wiresinfo-en/
Simple PTT Comport keying circuit
Status Lights for Indication of Activity
Small design for Easy installation into housing
Inputs and Outputs for External devices
http://www.irlp.net/
Parts necessary to build an r. f. gateway
The EQSO System
The EQSO system setup
EQSO RF Gateway main screen
Text
Text
TextText
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EQSO Administrative Control
EQSO Administrative control #2
EQSO system monitor
Eqso conference server software
EQSO website for software downloadhttp://www.eqso.net/
EQSO information website http://www.eqso.org
ECHOLINK
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 seamless
Point vales given to ensure proper settings every time.
The Echolink sysop window
When a station connects
When a station connects #2…
Echolink system setup
Windows sound card adjustments
Soundcard recording properties
Advanced recording console
Conference servers (roundtable gathering)
Echolink connection stats
Echolink server setup
Echolink setup r. f. gateway timing
Echolink audio setup and adjustments for dialup connection
Recording .wav welcome files for r. f. gateway
8 bit mono compression
The “Bridge” conference server software (for echolink) by: Skip WB6YMH
***** http://CqiNet.sourceforge.net *****
Echolink website: http://www.echolink.org/el/
ARRL President Jim Haynie, W5JBP addresses The N2LEN 9/11 Commemorative Net
THE ARRL NOTES 9/11 NET
9/11 Net Makes Global News
Globally Linked 9/11 Net Check-in List
http://groups.yahoo.com/group/echolink/
The End of slide presentation:
Please feel free to use this presentation at your leisure:Email: N2LEN@KCRA.ORGWebsite: http://www.qsl.net/n2len/The “N2LEN” cross-linked repeater system serving the entire New York City metropolitan area.Best 73, Len N2LEN