Motorola MTR2000 T5544 Instruction / Field Service Manual page 297

1
DESCRIPTION
The VHF External Preselector, Models CLN1216, CLN1217, provide 5 poles of bandpass filtering for the station
receive RF input signal. The filter assembly is mounted at the rear of the station. It includes mini-UHF connectors
for input from the receive antenna and output to the Receiver module.
The information provided is sufficient to give service personnel a functional understanding of the module, allow-
ing maintenance and troubleshooting to the module level. (Refer also to the Maintenance and Troubleshooting
section of this manual for detailed troubleshooting procedures for all modules in the station.)
General Description
Motorola Inc., 2005
All Rights Reserved
Printed in U.S.A.
PRESELECTOR MODULE
The external Preselector assembly is a 5-pole bandpass filter equipped
with tuning slugs to adjust the passband corresponding to the operating
frequency(s) of the station.
If the external Preselector option is being added to a station:
1. Attach the Preselector to the station according the mounting posi-
tion and cable connection information provided in this section.
2. Tune the preselector assembly by following the Preselector Field Tun-
ing Procedures, located in the Troubleshooting section of this manual.
Government & Enterprise Mobility Solutions
1301 E. Algonquin Road, Schaumburg, IL 60196
VHF EXTERNAL
Model CLN1216 (132 to 154 MHz)
Model CLN1217 (150 to 174 MHz)
68P81096E43-C
09/30/05-UP