User's Manual

2 Applied Wireless, Inc.
attaches with a BNC connector, enabling the use of an alternative antenna,
(such as a flat panel or Yagi) to increase operating range (please contact
Applied Wireless for a selection of available antennas).
The AT900-32 transmitter and the AR900-32 receiver are well-suited for
many diverse applications, including distribution of audio entertainment
content throughout a building, 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) will have a
significant influence on reception quality at the receiver, particularly at
longest ranges. For best results, both the transmitter antenna and the
receiver antenna should be positioned vertically (pointing either up or
down). Also, keep in mind that the RF signal from the transmitter will
travel through most non-metallic building materials (wood, stucco, brick,
etc.), however maximum stated reception range is based on unobstructed
line of sight conditions. While the transmitter’s signal will easily pass
through most non-metallic building structures, 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 AT900-32 Transmitter
Connect a line level stereo audio source (outputs from a CD player, for
example) to the corresponding LEFT and RIGHT line-level input jacks on
the transmitter’s rear panel (refer to Figure 1). A shielded dual cable is
supplied with the transmitter for making these connections. Some audio
devices, such as MP3 players, portable CD players, and PC sound cards
have a single miniature (3.5mm) stereo phone jack (as opposed to separate
RCA phono-type jacks). To connect any of these to the transmitter, use the
supplied adaptor in conjunction with the standard dual cable to make the
connection.
User’s Guide – 900MHz Stereo Audio Transmitter & Receiver 15
The following sections pertain exclusively to the Audio Transmitter,
Model AT900-32:
This product incorporates transmitter module FCC ID: QY4265
This device complies with Part 15 of the FCC Rules. Operation is subject
to the following two conditions:
(1) This device may not cause harmful interference and
(2) This device must accept any interference received, including
interference that may cause undesired operation.
INSTRUCTION TO THE USER (required by the FCC)
This equipment has been tested and found to comply with the limits for a
class B digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This equipment has been certified to comply with the limits for a class B
computing device, pursuant to FCC Rules. In order to maintain
compliance with FCC regulations, shielded cables must be used with this
equipment. Operation with non-approved equipment or unshielded cables
is likely to result in interference to radio and TV reception. The user is
cautioned that changes and modifications made to the equipment without
the approval of manufacturer could void the user’s authority to operate
this equipment.