Uhf Duplexer High Pass Resonators Tuning Set Up; Figure 72: Test Equipment Set Up For Tuning Uhf Duplexer High Pass Resonator; Tuning Uhf Duplexer High Pass Resonators - Motorola ASTRO 25 GTR 8000 Manual

MN003286A01-E
Chapter 5: GTR 8000 Base Radio Optimization
5.10.5.3

UHF Duplexer High Pass Resonators Tuning Set Up

Figure 72: Test Equipment Set Up for Tuning UHF Duplexer High Pass Resonator

5.10.5.3.1

Tuning UHF Duplexer High Pass Resonators

Procedure:
1 Set up test equipment as shown in
High Pass Resonator on page
2 Using a nut driver, adjust the pass adjustment screw for cavity #4 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 5 and 6.
178
Figure 72: Test Equipment Set Up for Tuning UHF Duplexer
178.