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Hints for Using the System:
Normal operating distance between the Transmitter and Receiver is about 100 feet (30m). The
operating range will vary in different buildings and surroundings. In some locations, the signal may
momentarily disappear. This is called a "drop-out" and is due to reflection and cancellation of the
radio signal. Moving a few feet will restore the signal.
Keep the Transmitter and Receiver units at least two feet apart. If the Transmitter gets too close to a
receiver, it can overload the Receiver, causing noisy reception or blocking of the signal.
Do not coil or bunch up the microphone or headphone cords. The cords act as antennas. Let
them hang at full length for the best results.
Do not use more than one Transmitter on the same channel (frequency) at the same time unless
they are physically separated by 50 to 100 feet (15 - 30 m). Operating more than one Transmitter
on the same channel at the same time in the same place will result in interference.
Using Multiple Systems for Multiple Groups:
For multiple tour groups within the same facility, multiple Tour Guide Systems may be operated on
the same channel at the same time by maintaining physical separation of 50 - 100 feet between
groups. The physical separation of groups takes advantage of the FM capture effect which causes
receivers to lock onto the closest transmitter.
Up to four systems can be operated simultaneously in the same facility if they all operate on differ-
ent channels. Channels A,C,E, and G may be used simultaneously.
Additional Battery Information:
Recommended Batteries:
For Transmitters: Eveready 522 Alkaline 9V or equivalent
BAT 003 rechargeable NiMH only
BAT 004, BAT 005, or CHG 1269A Chargers only for BAT 003
For Receivers: Eveready 216 Carbon 9V, Eveready 522 Alkaline 9V or equiv.
BAT 003 rechargeable NiMH only
BAT 004, BAT 005, or CHG 1269 Chargers only for BAT 003
Battery Life:
For Transmitters: 15 hours for Eveready 522 Alkaline 9V or equivalent
3 hours per charge for BAT 003 rechargeable
For Receivers: 15 hours for Eveready 216 Carbon 9V or equivalent
32 hours for Eveready 522 Alkaline 9V or equivalent
6 hours per charge for BAT 003 rechargeable
If the sound becomes weak or distorted, replace the battery. The indicator light may still be on,
even with a battery that is weak. Do not leave dead batteries in the receivers.
Rechargeable Batteries:
(1) Rechargeable batteries are shipped in a discharged condition. They must be charged
for 12 - 14 hours before using them. Make sure Transmitters and Receivers are turned
OFF
while charging.
(2) Williams Sound products are designed for use with a rechargeable battery (BAT 003)
and matching charger (BAT 004, BAT 005, or CHG 1269). This is the only type of recharge-
able battery and charger we recommend. The BAT 003 has an 8.4 V nominal voltage
and 100mAh capacity, compared to only 7.2V and 60 mAh for other types of
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