NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-21
Page
2
Code
02
REVISION 18
SUPPRESSED CARRIER AND REDUCED CARRIER (OPTIONAL)
The SSB operation with the carrier frequency eliminated is referred to
as single sideband suppressed carrier and is designated as the A3J
mode in the KHF-950.
If a small portion of the carrier frequency is transmitted along with the
sideband, then the operation is referred to as single sideband reduced
carrier, and is designated as the A3A mode in the KHF-950.
SIMPLEX, SEMI-DUPLEX AND RECEIVE-ONLY OPERATION
Simplex operation means that the transmission and reception
frequencies are the same. An example of simplex operation would be
communications with a control tower using a VHF COMM transceiver.
Semi-duplex means transmit on one frequency and reception on
another frequency.
Receive-only operation allows the system to operate as a receptor
only.
The 99 user programmed channels can be programmed for either
simplex, semi-duplex or receive only operation, and can operate in any
of the available modes (AM, USB or LSB).
NOTE: The use of LSB is legal for some international and off-shore
communications, but is not authorized for use in the United
States and most European countries.
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