G-2
DTMF Dual-Tone Multi-frequency. A Signaling System protocol widely used in the tele-
phone industry. Two tones are transmitted simultaneously at different ampli-
tudes for each keypad key press. A sequential series of Dual Tones makes a
data word.
DTMF Tx Tone
Duration
DTMF Tx Tone Duration is the amount of time that a DTMF tone is transmitted
for a single digit. Once this Tx Tone Duration ends, the DTMF Tx Tone Interval
begins, and vice-versa.
DTMF Tx Tone
Interval
DTMF Tx Tone Interval is the amount of time that the radio waits between
DTMF digits. Once Tx Tone Interval ends, the DTMF Tx Tone Duration begins,
and vice-versa.
EEPROM Electronically Erasable/Programmable Read-Only Memory: used by the radio
to store its personality.
Firmware Software, or a software/hardware combination of computer programs and data,
with a Þxed logic conÞguration stores in a read-only memory. Information can-
not be altered or reprogrammed.
FGU Frequency Generation Unit.
Frequency (a) The location of the center of a channel of operation in the radio spectrum.
Measured in Megahertz (MHz).
(b) A computer speed. Measured in Megahertz (MHz).
Hard Pot Hardware potentiometer for adjustment of parameter settings.
Home Channel The channel where scan is started.
Individual Call
Acknowledgement
If activated, the radio would send the preprogrammed Acknowledgement ID
when an Individual Call is received.
Landed Scan State When the radio is in Scan Mode, and once Active Scan Þnds an eligible Scan
List Member channel/call to receive or unmute to, the radio is then in Landed
Scan State. Also, once both Transmit and Receive activity has ceased, and
while the Scan Hang Timer is counting down, the radio is still in Landed Scan
Mode.
Latest Codeplug
Version
The most recent version number of codeplug information that was loaded into
the radio. This is stored in the radioÕs codeplug.
LCD Liquid Crystal Display: a module used to display the radioÕs current operating
channel info or status message.
Long Press
Function
Function that is invoked if the button is pressed and released after one second.
Lower Scan
Frequency
The lower limit that VFO will scan.
Maximum
Frequency
The highest frequency setting at which the radio is allowed to operate. The ra-
dioÕs frequency range is deÞned as being between, or equal to, the Minimum
and Maximum frequencies. This information is stored in the radioÕs codeplug.
Minimum
Frequency
The lowest frequency setting at which the radio is allowed to operate. The ra-
dioÕs frequency range is deÞned as being between, or equal to, the Minimum
and Maximum frequencies. This information is stored in the radioÕs codeplug.
Model Number The model number identiÞes the type of radio. This information is stored in the
radioÕs codeplug.
Term DeÞnition
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