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
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 | Modulation | Squelch Set |
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| Deviation |
|
f1L (MHz) | 136.0000 | 136.0000 | 136.0000 |
f1H (MHz) | N/A | 139.9950 | N/A |
f2L (MHz) | 140.0050 | 140.0050 | 140.0050 |
f2H (MHz) | N/A | 143.9950 | N/A |
f3L (MHz) | 144.0050 | 144.0050 | 144.0050 |
f3H (MHz) | N/A | 147.9950 | N/A |
f4L (MHz) | 148.0050 | 148.0050 | 148.0050 |
f4H (MHz) | 153.0000 | 153.0000 | 153.0000 |
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| Table 3 - Tracking Data Frequencies (High Split) |
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Parameter | RF Power | Modulation | Squelch Set |
|
| Deviation |
|
f1L (MHz) | 150.0000 | 150.0000 | 150.0000 |
f1H (MHz) | N/A | 155.4950 | N/A |
f2L (MHz) | 155.5050 | 155.5050 | 155.5050 |
f2H (MHz) | N/A | 161.4950 | N/A |
f3L (MHz) | 161.5050 | 161.5050 | 161.5050 |
f3H (MHz) | N/A | 167.4950 | N/A |
f4L (MHz) | 167.5050 | 167.5050 | 167.5050 |
f4H (MHz) | 174.0000 | 174.0000 | 174.0000 |
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