Electrical Design; Power Supply Unit (Psu); Communications Base Board (Cbb); Radio Frequency Module (Rfm) - Siemens AIRLINK VENUS Installation & Operation Manual

Software defined radio
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INTRODUCTION
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2.3

Electrical Design

The Airlink Venus radio is made up of modular boards as shown in the following figure.

Figure 2-4 Airlink Venus Radio Modular Board Design

2.4

Power Supply Unit (PSU)

The PSU requires an input voltage of 18 – 60 VDC capable of supplying a minimum of 5 amps.

2.4.1 Communications Base Board (CBB)

The CBB provides high flexibility in both frequency range and channel size. It uses GPS for
location and synchronization and provides the inputs and outputs for the console, serial, and
Ethernet ports. It also provides the connection to the outside LCD display that is visible on the
outside of the radio.

2.4.2 Radio Frequency Module (RFM)

The RFM provides the frequency specifics, filters, and power amplifiers to the radio. Currently
uses a single RF path that is switched between TX and RX.
COM-00-21-04
Version No.: A.1
2-4
OCTOBER 2021

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