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					Presented by STEPHEN HOCH
WU3I
Echolink Node Number: 28742
                                                 Introducing EchoLink
                                                 EchoLink is software
                                                 which allows Amateur
                                                 Radio stations to
                                                 communicate with one
                                                 another over the Internet,
                                                 using voice-over-IP
                                                 (VoIP) technology. The
                                                 program allows worldwide
                                                 connections to be made
                                                 between stations, from
                                                 computer to station, or
                                                 from computer to
                                                 computer.


 The program runs on Microsoft™ Windows®
95 or above. It is offered as freeware and may
               be downloaded.
 EchoLink is a full-featured software package
   with many important and useful features.
The Modes 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                       IRLP              EQSO
      Windows Based             Linux / UNIX Based    Windows Based


     Computer Interface         Computer Interface   Computer Interface
      Radio Interface               ONLY!!            Radio Interface


Sound Card      Sound Card        Sound Card           Sound Card
Microphone       COM Port         Parrallel Port        COM Port
 Speakers        Mic Input         Mic Input            Mic Input
               Speaker Output    Speaker Output       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 )
A Tour of EchoLink For licensed hams, EchoLink opens up new possibilities for
communicating around the world with other amateurs. Your PC links you or your local
repeater to any of thousands of other stations over the Internet.

The station-list screen keeps running tabs on who's currently on the system. Stations
which have recently come on or off are noted separately. Sort the list any way you
like. You can set up any number of "alarms" which will ring when your favorite stations
come online.




                                  In Sysop mode, EchoLink connects to a
                                  conventional FM transceiver using either the
                                  custom-designed iLINK interface boards from
                                  WB2REM and VA3TO, or general-purpose digital-
                                  mode interfaces such as the RIGblaster from West
                                  Mountain Radio. The board connects to your
                                  computer's sound card and serial port.
                           Virtually any type of Internet connection may be used with
                           EchoLink, from dial-up to DS3. Custom settings allow you
                           to tailor EchoLink to compensate for older computers or
                           slower Internet connections




The program includes a number of important new
security features, such as the ability to restrict
access by country, to help comply with your
nation's third-party traffic or reciprocal operating
rules.
                                           If the bandwidth of your Internet
                                           connection permits it, EchoLink allows
                                           up to 10 different stations to be
                                           connected at once. This is especially
                                           useful in Sysop mode for running a
                                           roundtable on your local repeater, or
                                           allowing "listening" stations to be
                                           connected without blocking out others.




Extended DTMF commands allow stations
to be searched or connected by callsign, or
the status of any station to be queried. The
program also includes a built-in Web server
for remote control of EchoLink from any
Web browser on the Internet.
Floating" pop-up windows keep track
of how many stations are on the
system, along with detailed status
about the current connection.
Interfaces: If you are expecting to set up EchoLink in "sysop" mode, you will need a
special interface device which connects your radio equipment to your
computer. This device allows the computer to control the PTT function of your
transceiver, and (optionally) to accept and process DTMF commands from the
receiver. For maximum flexibility, EchoLink is designed to work with several different
types of interfaces. Below is a partial list of high-quality interfaces which are
specifically recommended for use with EchoLink.
 WB2REM & G4CDY'S iLINK Board
This interface is available fully-assembled, or in kit form. The circuit was described
in QST for March, 2002. VA3TO Enhanced iLINK Controller
This interface is also available fully-assembled, or in kit form, and can be used with
other digital-mode software such as PSK31. RIGblaster from West Mountain Radio
Several models of these general-purpose digital-mode interfaces are available, all
of which are compatible with EchoLink. Use EchoLink's internal DTMF decoder
when using a RIGblaster. G3VFP iLINK / EchoLink Interface Controller
Fully assembled and enclosed, fully isolated interface designed expressly for
iLINK/EchoLink. Can be used with other digital-mode software such as PSK31.
Other Interfaces
Here are some other interface options for EchoLink.
PY2JF Interface (from Brazil)
The four system
setup screens
are easily
configured.
Most everything
is Automatically
filled in except
your personal
information.
The Preferences
settings allow how the
listings are displayed,
the connections that
are allowed and your
personal info file, the
security settings as to
the connections
allowed the call signs
locked out or the
country prefixes
accepted or denied and
the signals menu
designates the sound
played when activity is
detected
                                       The Sysop Settings allow many controls:
                                       The receive audio is able to be controlled in
                                       many ways the easiest is the default VOX.




The transmit control on the standard
interfaces is via the serial connection.
                                     The DTMF commands allow a number of
                                     different operations. These are listed on the
                                     Echolink Control Sheet.




The Identification allows the default
computer voice or a .wav file for your
Connection Identification.
                                        The options settings are for voice
                                        announcements of connecting stations or
                                        conferences and the time out settings.




The Web tab allows for remote control via
the internet.
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
Hookup is very easily done with Shielded wires and mini phone plugs on the
interface side and the proper connecter for your Microphone Jack and external
speaker. There is even an option for a control receiver to control the system
remotely.
There is even a COS mod for the purists that have to have it.
   EchoLink Control Sheet
   Direct Connect by Node Number. A + node number
   Connect to random node on internet: 00
    Connect to random link on internet: 01
    Connect to random conference on internet: 02
    Query node by node number: 06 + node number
    Reconnect to LAST node: 09
    System information: *
    Turn system on: CONTROL OPS ONLY
    Turn system off: CONTROL OPS ONLY
    Disconnect: # (make sure you hit pound after finished using the link every
    time!)
   Hints & Tips:
   Leave a pause between transmissions, don't jump the key. When working
    with several linked repeaters, it takes a couple seconds for them to drop.
    Wait until the machine says "Connected." until you start calling CQ. If it
    just says "connecting to xx...", do not talk yet, wait for it to connect fully.
    It will say "Connected" when it's connected.
   If you hear "Disconnected" right after you connect, this means the remote
    station has a firewall or internet problem. Just try another station at this
    point.
   When you are finished, wait until the station drops, and press # ONE time
    only. Pressing #### multiple times will not drop the link, and only causes
    a problem.
THANKS FOR YOUR TIME AND INTEREST


FOR MORE INFORMATION VISIT


WWW.ECHOLINK.ORG

				
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