User's Manual

Page 10 Venture-Base Installation and Operations Manual
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Set the RF Level
Transmitters must never be set to the same
frequency in the same location. Channels must
be set as far apart from each other as possible.
Test the reception with the RF level at one-half
or one-quarter [2] power. The lower it can be
operated satisfactorily, the less chance there
Operation
Continued
will be for interference with another system.
One-half or one-quarter power should cover
most classroom applications.
Receiver Tuning
Set the TONE switch [4] to ON. To tune the
receiver, refer to the respective receiver user’s
guide.
Reception Check
Using the tone or other audio source, walk
around with the receiver. Verify the re-ception
in all parts of the room. If reception is not
optimal, move the transmitter antenna to
another location and repeat this procedure.
Interference
With any type of RF device, other RF sources
can interfere with reception. Even the FCC-
designated ALS band is occasionally subject to
use by other types of devices.
Interference can take the form of rising-and-
falling audio. To verify on-channel
interference, take the receiver to the place
where the interference is worst and turn off the
transmitter. The interfering signal should now
come in stronger. Since the Venture-Base is
frequency-agile, you can set it to another
channel and retune the receivers to move away
from the interference.