VHF 5000 System Functional unit description
1-1
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1 Functional unit description
This chapter will – in general terms - describe each of the functional units in a VHF 5000 series system.
1.1 The RT5022/RT5020 VHF transceiver
Should include short description of the default handset used.
Key/Display
SMPS
BB - Section
10-32V DC
TX Signal
RX Signal
I/O Control
RF - Section
39013A
Simplified
Blockdiagram
Non func. Handset
Semi func. Handset
Rx/Tx
Antenna
DSC
Antenna
Option
The VHF radio is a transceiver which means it consists of a transmitter and a receiver.
The radio has four main blocks
SMPS
Built-in Switch Mode Power Supply, which converts the input battery voltage to internal supplies for the radio.
It also separates the battery potential from the radio.
MKD
Keyboard and Display unit. All controls and indicators are placed on this unit.
BB
The Base Band unit controls all the functions of the radio.
RF
This unit is the basic radio module with receivers for voice and DSC communication as well as a transmitter and
synthesizers for channel settings.
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