Reference Manual

The Network List
124 2110 SSB Transceiver Reference Manual
Sounding Interval
The Sounding Interval setting applies to ALE/CALM networks only. The sounding
interval is the frequency with which the transceiver sends sounding signals to other
stations to assess the quality of the channels in the network.
The recommended value is 5 hours. The longer the value, the longer the transceiver takes
to update its channel quality information. If the value is set to 5 hours the transceiver will
take 5 days to completely update channel quality information. Longer sounding intervals
decrease the interruptions on network channels.
Privacy Mode
The Privacy Mode setting applies to Codan Selcall and ALE/CALM networks only. The
Privacy Mode is the method used to encrypt the data content of calls between stations. If
you select Registered or Group, you will need to enter an appropriate password into the
Privacy Password setting.
When you are setting up ALE/CALM networks, you should ensure that you set up
networks with the same Privacy Mode for communication. If there is a mismatch in
Privacy Modes, the receiving station will use the most suitable privacy mode out of the
networks through which the call may be received.
For example, if an initiating station starts an ALE call containing data through a network
that has its Privacy Mode set to Plain, and the receiving station determines that the
address is valid in networks with the Privacy Mode set to Group or Plain, then it will
select the network with the Privacy Mode set to Plain on which to establish the link. Any
data communications within this link will use the basic 64 ASCII subset of characters.
NOTE
The call detect time is the inverse of the scan rate. For example, a call
detect time of 0.2 seconds is equivalent to a scan rate of 5 channels per
second.
NOTE
Link quality information is also updated each time a call is made or
received.
Privacy Mode Is used for...
Registered encrypting Phone calls that you make when you have registered
with a network that encrypts telephone numbers (you are
provided with a password that you need to enter into the Privacy
Password setting)
Group encrypting data in calls between two stations (you agree upon a
password to enter into the Privacy Password setting)
None calls made under a Codan protocol, which uses special
formatting
Plain (lowest mode)
(MIL-STD-188-141B
ALE option only)
AMD messages in ALE calls (basic 64 ASCII subset A–Z, 0–9,
space ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ]
^)