Motorola ASTRO 25 GTR 8000 - VHF Duplexer Low Notch Loop Assemblies Tuning Set up; Figure 65: Test Equipment Set up for Tuning VHF Duplexer Low Notch Loop Assemblies; Tuning VHF Duplexer Low Notch Loop Assemblies

5.10.4.5
VHF Duplexer Low Notch Loop Assemblies Tuning Set Up
Figure 65: Test Equipment Set Up for Tuning VHF Duplexer Low Notch Loop Assemblies
5.10.4.5.1
Tuning VHF Duplexer Low Notch Loop Assemblies
Procedure:
1 Set up test equipment as shown in Figure 65: Test Equipment Set Up for Tuning VHF Duplexer
Low Notch Loop Assemblies on page 171.
2 Using the tuning tool, adjust trimmer screws for cavity # 4 to obtain minimum reading on
millivoltmeter. (Adjust trimmer screw to obtain minimum. Reduce the range on the millivoltmeter
as necessary to reach true minimum reading.)
3 Repeat steps 1 and 2 for cavities 5 and 6.
MN003286A01-E
Chapter
5: GTR 8000 Base Radio Optimization
171