6-8 Radio Alignment Procedures: Transmitter Alignments
1. Make sure the Communication Analyzer is in Manual mode.
VHF
• Set the base frequency to 173.975 MHz
U
HF1
• Set the base frequency to 469.925 MHz
UHF2
• Set the base frequency to 519.975 MHz
7
00/800 MHz
• Set the base frequency to 869.8875 MHz
900 MHz
• Set the base frequency to 940.9375 MHz
2. Adjust the reference oscillator’s softpot value with the slider until the measured value is as
close as possible to the frequency shown on the screen. See Table 6-1.
NOTE: Increases the slider decreases the frequency and vice versa.
3. Left-click the Program All button on the screen to dekey the radio and save the tuned values.
4. Left-click the Close button on the screen to return to the Transmitter Alignments menu.
Table 6-1. Reference Oscillator Alignment
Band Target
VHF ±100 Hz
UHF1 ±100 Hz
UHF2 ±100 Hz
700/800 MHz ±100 Hz
900 MHz ±100 Hz
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