Section 3: Glossary-8 Glossary
receiver Electronic device that amplifies RF signals. A receiver separates the
audio signal from the RF carrier, amplifies it, and converts it back to the
original sound waves.
registers Short-term data-storage circuits within the microcontroller unit or
programmable logic IC.
repeater Remote transmit/receive facility that re-transmits received signals in
order to improve communications range and coverage (conventional
operation).
repeater/talkaround A conventional radio feature that permits communication through a
receive/transmit facility, which re-transmits received signals in order to
improve communication range and coverage.
RESET Reset line: an input to the microcontroller that restarts execution.
RF See radio frequency.
RF PA See radio frequency power amplifier.
RIB See Radio Interface Box.
ROM See read-only memory.
RPCIC Regulator/power control IC.
RPT/TA See repeater/talkaround.
RSS See Radio Service Software.
RSSI Received Signal Strength Indicator.
RTC See real-time clock.
RX Receive.
RX DATA Recovered digital data line.
SAP See Serial Audio CODEC Port.
SCI IN Serial Communications Interface Input line.
selective call A feature that allows you to call a selected individual, intended to
provide privacy and to eliminate the annoyance of having to listen to
conversations of no interest to you.
selective switch Any digital P25 traffic having the correct Network Access Code and the
correct talkgroup.
Serial Audio CODEC
Port
SSI to and from the GCAP II IC CODEC used to transfer transmit and
receive audio data.
Term Definition
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