Reference Manual

Table Of Contents
Making and receiving calls
166 2110 SSB Transceiver Reference Manual
Each type of call is described below.
Channel Test call
If you want to test the suitability of a channel/mode before you use it to transmit voice or
data, make a Channel Test call.
In an ALE/CALM network, a Channel Test call may be sent to an ALE address using a
Group Selective or NET address syntax (if you have the MIL-STD-188-141B ALE
option installed).
A Channel Test call made in an ALE/CALM network with a Group Selective or NET
address may be used to replace the information in the LQA database. The initiating
station automatically sends a beacon on each channel/mode combination in the ALE/
CALM network, recording local and remote BER and SINAD information, and
calculating an LQA score. The LQA screen is visible during the Channel Test call, and at
the end of the call, displays the best channel on which to make the call.
The LQA information recorded during a Channel Test call in an ALE/CALM network
replaces information already recorded against the same network and self addresses.
Using a Channel Test call in an ALE/CALM network is an immediate method of
replacing the LQA database in the transceiver.
A Channel Test call made in an ALE/CALM network using the text SOUNDING as the
call address may be used to initiate a sounding operation. Transceivers that detect this
sounding will update the relevant information stored in their LQA database.
Table 18: Call types and icons
Call type Icon
Channel Test
Emergency
Get Position
Get Status
Message
Phone
Selective
Send Position
NOTE
You cannot use the ALL, ANY, or Wildcard address syntax with a
Channel Test call.