User’s Guide – 900MHz Stereo Audio Transmitter & Receiver
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Pro Audio Transmitter
Model PAT900
Pro Audio Dual Diversity Receiver
Model PAR900M
Introduction / Product Descriptions
Model PAT900 from Applied Wireless Inc. is a high quality
transmitter designed to broadcast excellent quality low noise audio
from any monaural line level source, to the Applied Wireless
model PAR900M receiver. The PAT900 transmitter is compatible
with line level audio sources such as mixers, CD and DVD players,
commercial radio (AM or FM) receivers, satellite radio receivers,
MP3 players, and PCs. It also has a Mic input as well. These
products are for use with amplified speakers or speakers with
separate amplifiers. Model PAT900 conforms to FCC Part 15
requirements for unlicensed use, and will transmit over distances
up to 1000 feet*. The range may be increased substantially
through the use of a directional antenna (such as a flat panel or
Yagi) at the receiver.
* Unobstructed, straight line-of-sight range, when used with the standard
antennas included with the transmitter and receiver.
The PAT900 transmitter and the PAR900M receiver provide
twenty-four user-selectable channels of operation within the 902 –
928 MHz band to enable simultaneous operation of multiple
transmitters in a common area. Excellent frequency stability is
assured through the use of crystal references. The products
incorporate precise FM modulation and sophisticated filters to
provide stable, interference-free high fidelity audio reception.
The transmitter and receiver are housed in rugged aluminum
extrusion enclosures. AC power converters (9VDC) are supplied,
along with RCA phono-type audio cables. By FCC regulation, the
transmitter’s quarter-wave antenna is permanently attached
(substituting a different antenna, or mounting the antenna remotely
are not permitted). The antennas supplied with the receiver are a
removable quarter-wave ground plane (sometimes referred to as a
half-wave) antenna. The receiver’s antennas attach with a BNC
connector, enabling the use of alternative antennas, (such as a
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Applied Wireless, Inc.
directional flat panel or Yagi) to increase operating range (please
contact Applied Wireless for a selection of available antennas).
The PAT900 transmitter and the PAR900M receiver are well-
suited for many diverse applications, including distribution of
audio entertainment content throughout a building, DJ audio, event
audio, commercial and industrial surveillance, monitoring,
security, etc.
Installation Instructions
Before Beginning the Installation
Plan your installation carefully. The physical location and
orientation of the transmitter and receiver antennas (relative to
each other and their surroundings) will have a significant influence
on reception quality at the receiver. The following guidelines will
generally yield the best results:
•
The transmitter antenna should be positioned vertically
(pointing either up or down). The receiver antennas should be
canted off vertical at up to a 45 degree angle.
•
Antennas should be positioned high enough to enable people to
move about below them without creating obstructions between
the antennas.
•
Although the RF signal from the transmitter will pass through
most non-metallic building materials (wood, brick, etc.), its
strength is reduced with every wall through which it must pass.
Therefore,
maximum stated reception range is based on
unobstructed line of sight conditions.
•
The transmitter and receiver are both rated for indoor use only.
If either unit must be located outdoors, it must be protected
from the elements (using, for example, a non-metallic NEMA4
enclosure).
Connecting Audio to the PAT900 Transmitter
Line Input
