User's Manual

DEFINITIONS
GLOSSARY
ENVOY™ TRANSCEIVER REFERENCE MANUAL 427
Glossary
This term... Means...
ALL call An ALE address syntax used to broadcast to any station that is tuned to the
same frequency in an ALE/CALM HF network, or scanning the channels
in the scan table(s) associated with the HF network. The ALL call uses a
special address syntax @?@ that ALE stations recognise.
A selective ALL call addresses a subset of stations. A multiple selective
ALL call addresses these subsets within the one call.
The global ALL address syntax may be used in Emergency, Message,
Phone, Selective, and Send Position calls if the FED-STD-1045
ALE/CALM option is installed. Selective ALL calls may be made in these
call types if the MIL-STD-188-141B ALE option is installed.
ANY call An ALE address syntax used to broadcast to any station that is tuned to the
same frequency in an ALE/CALM HF network, or scanning the channels
in the scan table(s) associated with the HF network. The ANY call uses a
special address syntax @@? that ALE stations recognise.
A selective ANY call addresses a subset of stations. A multiple selective
ANY call addresses these subsets within the one call.
The ANY address syntax may be used in Emergency, Message, Phone,
Selective, and Send Position calls if the MIL-STD-188-141B ALE option
is installed.
automatic gain control
(AGC)
A process that automatically adjusts the gain with respect to the input
signal to provide a constant output level.
automatic level control
(ALC)
A process that automatically provides a constant output level as the input
level varies.
automatic tuning antenna An antenna designed for use with multi-channel transceivers. It uses a
microcontrolled stepper motor to give continuous tuning over the
operating frequency range of the antenna.
calling station The station that starts the call.
called station The station that receives the call. You enter the address of this station, or
an appropriate syntax to match the address, when you make a call to this
station.
channel A frequency and sideband programmed in the transceiver that is used to
transmit and receive signals on air.
channel dwell time The length of time during scanning that the transceiver pauses on each
channel in order to detect an incoming call. It is the inverse of the scan
rate.