3
Frequency Agile UHF Belt-Pack Transmitter
Rio Rancho, NM – USA
INTRODUCTION
The 700 Series wireless system was designed to take advantage of the superior
audio performance provided by DSP audio signal processing and the security
provided by proprietary digital and encrypted digital radio operation.
Several advantages are provided by a digital wireless system and DSP technology:
• A digital radio system provides outstanding signal to noise ratio
• The signal to noise ratio of a digital radio system does not vary with the RF signal
strength arriving at the receiver.
• DSP audio signal processing provides a superior limiter
• Eavesdropping is difficult and secure encryption techniques can be implemented
The UM700 is a rugged, machined aluminum package in a belt-pack configuration
with a removable, spring loaded belt clip. A 5-pin input jack provides taps for any
microphone or line level signal. The unit is powered by a single 9 Volt alkaline or
lithium battery, or from external DC using an optional battery eliminator. The an-
tenna is a detachable, locking 1/4 wavelength flexible bronze alloy cable that con-
nects to a 50 Ohm SMA port on the control panel.
Only the UM700 transmitter is covered in this manual. Companion receivers are
covered in separate manuals. The UM700 will operate with any 700 Series Lec-
trosonics receiver in the same frequency block.
