Operation Manual

OM-E 2072-09287-00
3-53
14. To end the call, press ESC.
END CALLING
3-12.3.4.11 Transmitting a Self Call
The self-call is a test call addressed to your own address within the currently selected net. Its purpose
is to check that your radio set is OK and can transmit calls (to check reception, you can simply listen
to other radio sets).
When you send the self-call, the radio starts sending calls to its own address, successively, on each
channel in the current net. After going through all the channels, the call process stops. No other
response is expected.
NOTE
You can also include the self address in a group call.
To send a self-call:
1. Press CALL. The radio displays the last called address.
2. Press MORE once.
3. Press MULT to display the first page of special calls.
4. Press MORE again to display the next page.
5. Press SELF to start the self-call.
6. You may select now a specific channel to perform the call, by pressing CHAN. See details on
page 3-39.
7. When ready, press SEND to start transmitting. The display alternates between your self-address
and the channel used for the call is sent. If you did not select a specific channel, the channel
number changes as the radio sends the call on each channel assigned to the selected net.
After all the channels have been used, the call automatically stops.
You can press STOP at any time to end the call sooner.
3-12.3.4.12 Bidirectional Handshake
The bidirectional handshake is used to exchange LQA scores with other stations without establishing a
link.
NOTE
The Micom can also be programmed to automatically initiate the call
to the station after finishing the bidirectional handshake (using the
BDLK parameter reached under the ALE programming options).
A bidirectional handshake can be carried out with a single station or with all stations in the net. It can
be carried out either on a single channel, or on all the net channels. When required, a message can also
be added to the procedure. After a bidirectional handshake with a single station, the LQA matrices of
both radios are updated. The operator can then initiate a call to that station and obtain the best channel
automatically.
When the bidirectional handshake procedure is performed with a net, all the stations in the net update
their LQA tables. Micom will wait for responses for a certain time before entering the link state with
all the stations that responded within this interval (the maximum number of stations that are accepted
in a bidirectional handshake is 16).