Lectrosonics UM300b User Manual download pdf (Page 3)

Frequency Agile UHF Belt-Pack Transmitter

INTRODUCTION

Thank you for selecting the Lectrosonics UM300B frequency agile, belt-pack trans-

mitter. The UM300B combines over 80 years of engineering experience with the very

latest components, in a design that addresses the most demanding professional

applications.

The design of the UM300B was the direct result of numerous conversations with

users, staging and touring companies and dealers across the US. The specific

concerns and needs brought up in these conversations led directly to the develop-

ment of the operational features offered on the UM300B. Up to two hundred fifty six

frequencies are user selectable to alleviate interference problems in travelling

venues, and the low frequency roll-off is user adjustable to adapt to varying acoustic

environments and preferences.

The UM300B is a rugged, machined aluminum package with a removable, spring

loaded belt clip. The input section provides a correct input tap for virtually any

microphone or line level audio source. 5 Volts of bias voltage is available to power

electret mics with either positive or negative bias. Level indicating LEDs are provided

on the control panel to make level settings quick and accurate, without having to

view the receiver. The battery compartment accepts any 9 Volt alkaline battery and

makes a positive connection via self-adjusting contacts. The antenna is a detach-

able, locking 1/4 wavelength flexible bronze cable that connects to a 50 Ohm SMA

port on the transmitter.

Only the UM300B transmitter is covered in this manual. Companion receivers are

covered in separate manuals. The UM300B will operate with any 300 Series Lec-

trosonics receiver in the same frequency group.

Lectro Model: UM300B

Int. App No: RO192WM

Modulation Type: 180KF3E

Freq. Range: 844.8 - 862 MHz

Ser. No: XXXXXX - Block 33

Rio Rancho, NM – USA

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Lectrosonics UM300b User Manual Page 3