LBI-3899
TRACKING DATA
The radio personality contains certain
information bytes known as Tracking Data, which allow
the radio computer to calibrate transmitter power,
modulation deviation, and squelch threshold. Normally,
no adjustments need be made to the radio to maintain
specified limits for the above parameters, since the radio
computer makes the necessary adjustments using the
Tracking Data established at the factory. However,
should Transmitter PA, Synthesizer, or Logic Circuit
boards be replaced, it may be necessary to alter the
Tracking Data to re-set these parameters properly.
Furthermore, if the Tracking Data is lost, specialized
procedures are required to load new Tracking Data.
therefore, it is VERY
IMPORTANT to establish a
record of the Tracking Data of every radio as it is
received from the factory. The frequencies at which
Tracking Data is established are given in the "Test
Frequencies" section.
TEST FREQUENCIES
The following frequencies are those for which
Tracking Data is established, and are used as Test
Frequencies:
Table 2 - Tracking Data Frequencies (Low Split)
Parameter RF Power
Squelch Set
f1L (MHz) 136.0000
136.0000
f1H (MHz) N/A
N/A
f2L (MHz) 140.0050
140.0050
f2H (MHz) N/A
N/A
f3L (MHz) 144.0050
144.0050
f3H (MHz) N/A
N/A
f4L (MHz) 148.0050
148.0050
f4H (MHz) 153.0000
153.0000
Table 3 - Tracking Data Frequencies (High Split)
Parameter RF Power
Squelch Set
f1L (MHz) 150.0000
150.0000
f1H (MHz) N/A
N/A
f2L (MHz) 155.5050
155.5050
f2H (MHz) N/A
N/A
f3L (MHz) 161.5050
161.5050
f3H (MHz) N/A
N/A
f4L (MHz) 167.5050
167.5050
f4H (MHz) 174.0000
174.0000
9
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