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