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DMS-MTX DualMode Metrocell Cell Site Description
RMC
Receive Multicoupler. A device for amplifying the input received from a single
antenna and providing multiple outputs for a group of receivers.
RSSI
Received Signal Strength Indicator. A measurement of the received RF signal
strength measured at the base station or the subscriber terminal. It is expressed in
dBm.
SAT
Supervisory Audio Tone. A tone of 5970, 6000, or 6030 Hz which modulates the
AMPS voice channel along with voice audio. It is generated by the cell site and
is repeated by the mobile back to the cell site. The repeated SAT is checked by
the cellular system to confirm the continuity of the complete RF path from the
cell site to the subscriber terminal and back to the cell site.
SCC
SAT Color Code. The datafill values corresponding to the various SATs: 00 for
5970 Hz, 01 for 6000 Hz, 10 for 6030 Hz.
Sector
A theoretical wedge-shaped part of the coverage area of one cell site, served by a
specific group of directional antennas on specific channels.
Sectorization
A cell site configuration that consists of two or more sectors in which a different
control and voice channel assignment is given for each sector. In this
arrangement, the datafill and channel assignments for each sector are tailored to
meet the system operational requirements, providing more flexibility in the cell
site configuration compared to an omni configuration but with a decrease in
trunking efficiency.
Signal (RF)
Radio frequency energy associated with a particular or desired frequency.
SINAD
A standard measurement of detected audio quality that is related to signal-to-
noise plus distortion of the RF signal strength at the receiver input terminal. 12
dB SINAD is the commonly used threshold for receiver sensitivity measurements
to determine the weakest-practical analog RF input, in dBm, required by the
receiver. A SINAD of 20 dB is considered good quality and defines the RF input
level needed to fully quiet the receiver.
S/N
Signal-to-Noise ratio. The ratio of signal power to noise power on a radio
channel.