Motorola ASTRO 25 GTR 8000 - UHF Duplexer Low Pass Resonators Tuning Set up; Figure 71: Test Equipment Set up for Tuning UHF Duplexer Low Pass Resonator; Tuning UHF Duplexer Low Pass Resonators

5.10.5.2
UHF Duplexer Low Pass Resonators Tuning Set Up
Figure 71: Test Equipment Set Up for Tuning UHF Duplexer Low Pass Resonator
5.10.5.2.1
Tuning UHF Duplexer Low Pass Resonators
Procedure:
1 Set up test equipment as shown in Figure 71: Test Equipment Set Up for Tuning UHF Duplexer
Low Pass Resonator on page 177.
2 Using a nut driver, adjust the pass adjustment screw for cavity # 1 to obtain a PEAK reading on
the millivoltmeter.
3 Using an open-end wrench, carefully tighten the lock nut ensuring the pass adjustment screw
does not shift position.
4 Repeat steps 2 and 3 for cavities 2 and 3.
MN003286A01-E
Chapter 5: GTR 8000 Base Radio Optimization
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