| 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.
The Kenwood TM-V71 and TM-D710 dual-band FM transceivers are the only commercially-available rigs with EchoLink capabilities built in. With
these rigs, no special interface is required; you can use the optional PG-5H cable
(or a homebrew cable) to connect the rig directly to your PC. For answers to frequently-asked questions
about using EchoLink with the TM-V71 and TM-D710, please click here.
These interfaces are available fully-assembled, or in kit form. The
original circuit was described in QST for March, 2002. The newer ULI and
AMI models have additional features.
This interface is also available fully-assembled, or in kit form, and can be
used with other digital-mode software such as PSK31.
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 and set it to VOX in the Sysop mode. (If
you wish to use a RIGblaster and join the EchoLink QSO using the
linked radio's microphone, the RIGblaster Pro model is required.)
Fully assembled and enclosed, fully isolated interface designed expressly for
iLINK/EchoLink. Can be used with other digital-mode software such as
PSK31.
This is a USB device that functions as an external sound card, with VOX-controlled PTT,
so no connections to your computer's sound card or serial port are required.
Pre-wired cables are available for popular transceivers.
Can also be used with digital modes such as PSK31.
Other Interfaces
Here are some other interface options for EchoLink. PY2JF
Interface (from Brazil)
DL5MGD Controller (diagrams
and PIC source code)
AB6CQ's PC to Radio Interface
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ARRL Book on