Park Air Systems 6525, User Documentation

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31-3MDR00HB Page 12 Overview
Draft
Introduction
This documentation describes the Park Air 6525 Multimode Digital Radio (MDR). The MDR is a VHF
transceiver operating in the aeronautical frequency band between 118 and 136.975 MHz. The maximum
transmit output power is 25 watts.
The MDR can be used as a conventional AM-Voice transceiver, or can operate as a subsystem of the
Aircraft Communications, Addressing and Reporting System (ACARS) and the VHF Data Link (VDL)
air-ground communication systems.
Fig 1 6525 Multimode Digital Radio (MDR)
Operating Modes
Operating modes are software controlled. A 6525 MDR can be loaded with any two of the four available
software fills shown in Fig 2. All four software fills are available to download through the user’s network.
Fig 2 Operating Modes
AM Digital AM Analogue
ACARS ACARS
VDL
Mode 2
AM-Voice
6525 MDR
(requires an
external modem)
(uses modem
within the MDR)