Technical Manual

A-1
ATLAS 4500 Multimode Station Technical Manual July 2021
UHF Circuit Descriptions
This chapter contains descriptions of the following UHF ATLAS 4500 internal
components. For each of the following components, this chapter contains a general
description and a schematic description:
• 380-520 MHz Exciter Module
• 380-520 MHz Receiver Module
• 380-520 MHz Power Amplifier
• Controller Board
• Audio Logic Board
• Power Supply
A.1 380-520 MHz Exciter Module
This section contains information on the following Exciter Module components:
• Frequency Synthesizers
• TX VCO Board
• Reference Clocks
• RF Carrier Generation & Modulation
• RF Filter Amp Section
• DPD Loop
• Exciter DC Supplies
A p p e n d i x