This above url displays the real time list
of active nodes. This means if the node is view-able then it should be
reachable if the Status of the node shows IDLE. If you should dial a
node number and the other end is in use you will get back a voice
announcement that the node is busy and to try calling back later. The
destination node will also get a voice message telling them that node
XXXX was trying to call them.
We have added a few extra optional features
to the local 8317 N4FOB computer like:
Time announcement every 1/2 hr between the
hours of 6:00am and 11:00pm
Time announcement can be dialed at will
with *0 command.
Last call waiting can be dialed at will
with the *69 command.
The Echolink system comes in 3 flavors:
-User - This is a Ham on a computer
somewhere using a headset mike. (No Radio Involved at his end)
-L Link - This is a Ham on a link radio
normally on a simplex channel either on vhf or uh
-R Repeater - This is a Ham on a Repeater
similar to the reflectors used in the IRLP System.
Echolink in our case is a mere addition of
extra scripts added to an existing fully functional IRLP node. These
scripts allow the IRLP computer to also make an receive Echolink calls
but not cross link the two systems. If an Echolink call is in progress
the IRLP side will be busy and vice versa. There is no additional
hardware required on an IRLP node to make it into an EchoIRLP node which
can handle both systems. It costs nothing to add echolink to the IRLP
node and gain an additional set of functions and thousands of echolink
nodes additionally become available.
Echolink is a system with a different
philosophy than IRLP in that Echolink allows computer to computer
connections to be made so you could be speaking to a Ham on a laptop
sitting in a Retirement Community where he cannot install antennas and
has only a computer available. This opens up a whole new world to Hams
in this type of situation not to mention the capabilities gained for
emergency communications by being able to set up a laptop at any hot
spot or internet connection and be able to communicate through the
repeater system. Another way is by using an Apple Ipad or SmartPhone
with the Echolink App and you can also then access the repeater from any
internet system in the world. Multiple echolink connections to the node
from anywhere in the world are possible in an emergency and are limited
only by the upload bandwidth of the host internet connection and it's
Remember that there is stringent call sign
authentication in place for both the IRLP and the echolink system so
non-hams cannot access the repeater from the internet. Irlp actually
uses a pgp key authentication system during every call before a call is
connected and able to progress to a completed connection.
An echolink number consists of anything
from a 4 digit destination number up to 6 digits including a pre-access
This then means that echolink dialing is a
bit more of a challenge as the minimum digits dialed will be 5 and the
maximum would be 7 to gain access to a destination Echolink node.
I can remember about 7 or 8 IRLP node
numbers but have trouble remembering more than 3 Echolink numbers. Also
it is a real challenge to dial these while mobile.
There is a solution to this problem if
there are favorite echolink numbers that are commonly dialed on the node
I can install a code translation that will dial the destination node
with as little as two or three numbers and using the A to C part of the
TT Pad to make it even easier to remember. So your favorite Echolink
station could be a simple eg. C3 code.
To dial an echolink call you simply key
your mike and enter the pre-access digit followed by the destination
The pre-access digit for node 8317 is # so
if you were dialing the destination node K4CVL-R in Bradenten Fl node
number 395804 you would key your mike and press #395804
Lastly, to disconnect the repeater from
either an IRLP or Echolink connection you simply dial 73 on your
Hope you enjoy using the EchoIRLP VoiP
73 from Klaus Rung ve3kr