PALS Net Echolink connection is located at
779467 on the Echolink
the Echolink program for Windows from www.echolink.org
there are Apps for both the Apple
the Andriod based Smart Phones as well. Echolink will also run on
LINUX systems using the WINE application.
is available from www.sourceforge.net
computers. EchoMac is a client
for OS X that allows
connection to the Echolink system. It is built as a Universal Binary,
and works on
X 10.3.9 or later.
is a system that uses VoIP (Voice over Internet Protocol) to
send and receive Amateur Radio using the
as it's communications medium. It allows licensed
Amateurs to connect to distant repeaters or links over
internet. It provides means to connect repeaters to
repeaters, computers to repeaters, and radio based users
the other users over the internet. There is a lot of info
available on the Echolink system on the internet, so rather
repeat it here, let me encourage you to use you favorite search
engine to find out for yourselves. I would also
recommend the ARRL Publication "VoIP Internet Linking for Radio
Amateurs" by Jonathan Taylor, K1RFD.
Taylor is the creator of the Echolink program, and he covers
Echolink, IRLP, and several other linking systems.
are several aspects of any internet linking system that you need
to be aware of to fully use them. First there
a real delay built into Echolink to allow transmission of the audio
over the internet. This delay is typically 3-5
between when you stop talking and when you can expect to hear a
response from the Echolink user. This
is used storing and re-ordering the information packets from
which the speech is derived. Your voice data
delayed about 1.5 seconds going to the internet user, and his reply
is delayed by the same amount in return. Add
that the time needed to recognize that you are finished and for the
internet user to key and start talking and you
quickly up to five to ten seconds delay. It often seems
an eternity in comparison to the attack time (one
or so) delays we are used to on PALS to allow the repeaters to
all link up. Remember that these delays
inherent in the VoIP systems to make sure the voice data packets
are received and re-ordered at the distant end.
means we really need to allow more time between transmissions for an
Echolink user to have a chance to get in.
Net uses about 40 DTMF codes to control each of the eight
repeaters in the system, sending DTMF codes
the PALS Network to try to connect to other Echolink repeaters
stands an excellent chance of accidentally
on one of the 320 DTMF codes of the PALS system and messing up
something very badly. That is why
will hear the Control Stations and Rusty in particular, tell you
not to use DTMF on PALS, That is also why
ability to connect from PALS to other Echolink repeaters has been
blocked on W4APE-L.
don't use DTMF tones over
the PALS system.