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
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
-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 robustness.
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 digit.
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.
To dial an echolink call you simply
key your mike and enter the pre-access digit followed by the
destination node number.
The pre-access digit for node 8317
is # so if you were dialing the destination node K4CVL-R in
Bradenton Fl node number 395804 you would key your mike and
Lastly, to disconnect the repeater
from either an IRLP or Echolink connection you simply dial 73 on
your touchtone pad.
Hope you enjoy using the EchoIRLP
73 from Klaus Rung ve3kr