Lectrosonics R172 User Manual download pdf (Page 2)

INTRODUCTION

The R172 receiver is a fixed frequency design two channel wireless microphone receiver. Designed to offer two

simultaneous channels of wireless microphones, the R172 will can operate both channels from one antenna or two

for passive diversity operation. The dual antenna configuration reduces the probability of dropouts resulting from

multipath interference. Additionally, the audio output from this receiver can be either split into discrete channels or

mixed internally for maximum flexibility in any audio installation.

The RF signal first passes through RF filter coils coupled with ultra-low noise J-FETs. The J-FETs are used to

provide enough gain to compensate for inherent losses in the filter stages. Crystal controlled oscillators are used to

minimize drift and are stable over a wide range of temperatures. The output of the front end is then fed to a double

balanced diode mixer which generates an interference free IF signal. The mixer is followed by an LC filter stage and

the signal is amplified.

TABLE OF CONTENTS

Receiver Front Panel ............................................................................2

Receiver Rear Panel .............................................................................3

Operating Instructions: .........................................................................4

Set up sequence

Antenna Use and Placement.................................................................6

Multi-channel Audio Mixing ...................................................................7

Troubleshooting Guide..........................................................................8

Specifications .......................................................................................9

Factory Repair Service .........................................................................10

1 2 3 4 5 6 7 ... 12 13

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Lectrosonics R172 User Manual Page 2