EUROTEL - ITALY
ETL0480TBD
IV - COMPOSITION OF ETL0470, RF AMPLIFIER MODULE 700 W UHF
•
The ETL0470 TV RF Power Amplifier Module consists of one class “AB” driver stage, that feeds four
class “AB” final RF amplifiers combined. Other parts of this Amplifier are: three identical switch
mode power supply modules, a microprocessor controlled metering, alarm and protection module,
a directional coupler. All these parts are assembled into a standard 4 unit 19 inch rack chassis.
•
The four R.F. amplifiers of the output stage are coupled together by means of three suspended
substrate hybrid couplers.
•
The R.F. amplifier modules are mounted on a massive heat sink in the bottom part of the cabinet
and the 3 switch mode power supplies are mounted at the upper of the cabinet.
•
The modules are:
PARTS SUPPLIED IN THE STANDARD CONFIGURATION
QTY MODEL
Class “AB” UHF RF buffer Amplifier module
1
MOE140-C800
Class “AB” UHF RF Amplifier module (4 final Amplifiers)
4
MOE158-B
Switch Mode Power Supply Unit
3
MOE104ABD
Metering, alarm and protection module
1
MOE183
Figure 2: UHF TV 700 W RF Power Amplifier Module ETL0470
Page 8 CMAN0480ENG
October
2002
