HF NETWORKS
ENTRIES FOR AN HF NETWORK
ENVOY™ TRANSCEIVER REFERENCE MANUAL 143
FED-STD-1045 ALE/CALM
If you want to use the ALE/CALM call system to automate the selection of channels,
you must install the FED-STD-1045 ALE/CALM option in the transceiver. CALM
stands for Codan Automated Link Management.
The FED-STD-1045 ALE/CALM option enables the transceiver to test the signal
propagation qualities of your channels using soundings, and build a profile of each
channel’s suitability for use at different times of the day and night. The BER and
SINAD information collected during sounding activity is stored in the transceiver
using a 24-hour period LQA database. With this information, the transceiver is able
to select the most suitable channel/mode for you when you make a call.
You are able to make global ALE ALL calls with this option.
CALM is interoperable with FED-STD-1045 ALE.
MIL-STD-188-141B ALE
The MIL-STD-188-141B ALE option includes the FED-STD-1045 ALE/CALM
option. It provides the capability to make ALE calls using ALL, ANY, Group
Selective, NET, and Wildcard address syntaxes. These calls connect one station to
many stations at the same time. The MIL-STD-188-141B ALE option also provides
advanced LQA, advanced messaging, and access to a Heard List.
The MIL-STD-188-141B ALE option is interoperable with FED-STD-1045 ALE and
MIL-STD-188-141B.
Self address
An address is the sequence of characters that an operator at one station uses to call
another station. A self address is the sequence of characters that identifies your station.
This self address is associated with an HF network. The HF network defines what call
system is used to make and receive calls, and the self address and HF network together
define if the transceiver reacts to signals that it detects on air. If a transceiver detects
its address, but does not have the matching call system associated with that address, it
ignores the call. If a transceiver detects its address and has the matching call system,
it accepts the call.
Scan tables
An HF network must have an associated scan table of channels on which to make
calls, or it can use any channel programmed into the transceiver if the Global entry
is enabled for the HF network.
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