Mag One BPR 40 Service Manual - page 41
Hardware Tuning Setup and Procedure
3-3
2.3
Transmitter Tuning
2.3.1
High Power
1.
Connect the radio to power meter.
2.
Set the radio to the appropriate tuning frequency (refer to Table 3-1).
3.
Key up the radio.
4.
Using the ceramic tool, adjust R425 to tune high power (refer to Figure 3-2).
2.3.2
Low Power
1.
Connect the radio to power meter.
2.
Set the radio to the appropriate tuning frequency (refer to Table 3-1).
3.
Key up the radio.
4.
Using the ceramic tool, adjust R426 to tune low power (refer to Figure 3-2).
2.3.3
Frequency Tuning
1.
Set the radio to the appropriate tuning frequency (refer to Table 3-1).
2.
Using the ceramic tool, adjust FL701 to tune the frequency (refer to Figure 3-2).
2.3.4
Modulation Balancing
1.
Set the radio to the appropriate tuning frequency (refer to Table 3-1).
2.
On the test equipment, set the following configurations:
Audio bandwidth: 0.25Hz to 15,000Hz.
De-emphasis: Off.
FM: Peak negative.
3.
Using the Audio Analyzer, inject a 1 kHz tone to the radio through the test box.
4.
Key up the radio.
5.
Set the desired modulation balance at the output level of the Audio Analyzer.
Figure 3-2 Tuning Ports
R425
R426
FL701
R216
R215