DEFINITIONS
GLOSSARY
ENVOY™ TRANSCEIVER REFERENCE MANUAL 465
shielding A metallic barrier that is positioned between a noise source and the
transceiver to minimise noise interference.
sideband A band of frequencies that is above or below a modulated carrier
frequency.
standing wave ratio
(SWR)
The ratio of forward and reflected powers between a transmitter and its
antenna load, which can be measured by an SWR meter.
station A point of communication consisting of a transceiver, a power supply, an
antenna, control and accessory devices, ancillary equipment, and
appropriate connecting cables.
transceiver An RFU, handset, speaker, and appropriate connecting cables.
transmit frequency A frequency that carries modulated information to a remote transceiver.
Wildcard call An ALE address syntax used to broadcast to any station that is tuned to or
scanning the same frequency in an ALE/CALM HF network. The
Wildcard address syntax, which ALE stations recognise, uses the wildcard
character ? as a placeholder for characters within an address of a called
station. A multiple Wildcard call uses multiple wildcard addresses in the
one call. Stations with matching addresses respond to the call.
The Wildcard address syntax may be used if the MIL-STD-188-141B
ALE option is installed.
This term... Means...
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