Williams Sound 173, 174 User Manual
The Pro’s
Choice for
Wireless Tour
Listening!
T OUR GROUPS SOON GROW
bored and distracted when
they can’t hear the presentation. Make sure your guests
can hear with the Hearing
Helper
™
Tour Guide System
from Williams Sound.
Use It Anywhere
The Hearing Helper System
helps tour groups overcome
background noise and distance from the guide, even in
noisy surroundings.
Use it in factories, museums,
power plants, zoos, and tourist
attractions—anywhere tours
are conducted.
Works Like A Radio Station
With the Hearing Helper, your
guide wears a body-pack
radio transmitter and headset
microphone. Listeners use
portable receivers and light-
Williams Sound
®
Helping People Hear
weight headphones to hear
every word, even in the back
of the group!
Make It Easier For Everyone
The Hearing Helper System
saves your tour guide’s voice,
and
keeps the presentation
from disturbing others. It also
fulfills accessibility requirements for hearing assistance.
Easy To Set Up & Use
No installation is required for
this portable, wireless system.
Operating over a distance of
150-300 feet (46 - 92 m), it
accommodates any number
of users with additional
receivers.
Customize Your System
Because the Tour Guide
System can be ordered with
a variety of optional headphones, earphones, batteries,
and chargers, you can configure a system that best
meets
your
needs.
What’s Included
•Transmitter
• Headset Microphone
• Receivers (6)
• Headphones (6)
• Belt Clip Cases (7)
• AA Batteries (14)
• System Carry Case
The Williams Sound Warranty:
Your Assurance Of Quality
At Williams Sound, we’re certain of our quality. That’s why
we back the Hearing Helper
™
Tour Guide System with a
5–year warranty*, your assurance of both quality and satisfaction.
* 90 days on accessories
Wireless, Portable FM Listening System, Models TGS 173 and TGS 174
Hearing Helper
®
Hearing Helper®Tour Guide System
The Pro’s
Choice for
Wireless Tour
Listening!
The Pro’s
Choice for
Wireless Tour
Listening!
FM Transmitter
Models: T1-173.400, T1-174.100, T1-174.300, T1-175.500, T1-176.300
Dimensions: 3-5/8" L x 2-3/8" W x 7/8" H (92.1 mm x 60.3 mm x 22.2 mm)
Weight: 4.4 oz (125 g) with batteries
Color: Neptune blue, shatter-resistant polypropylene
Battery Type: Two (2) AA 1.5 V Non-rechargeable Alkaline batteries
(BAT 001), 100 mA nominal current drain, 12 hours approx. life
(OR)
Two (2) AA 1.5 V NiMH Rechargeable batteries (BAT 026),
8 hours per charge approx., recharges in 14–16 hours, uses CHG 1600
Multiple Battery Charger
Operating Frequencies: Fixed 173.400 (UK only), 174.100, 174.300, 175.500, 176.300 MHz
Stability: ± .005%, crystal reference
Modulation: Narrow-band FM, 10 kHz, 100 µS pre-emphasis
RF Output: 1.5 mW typical
Freq Response: 100 Hz to 10 kHz, ± 3 dB at 1% max. THD
Signal–Noise Ratio: 55 - 60 dB, with R1-173 Receiver
Compressor: Compressor uses adjustable slope and noise gate
Transmit Antenna: Integral with 39" microphone cord
Microphone: Noise-cancelling, Headset type, 39 in. cord, 3.5 mm mono phone plug
(MIC 044)
Controls & Indicators: On/Off switch, slide-type; “On” Indicator LED
Mic Connector: 3.5 mm mono phone jack
Charging Contacts: Designed for use with CHG 1600 and CHG 200 Multiple Battery Chargers
Approvals: MPT 1345, ETS 300 422, CE
FM Receiver
Models: R1-173.400, R1-174.100, R1-174.300, R1-175.500, R1-176.300
Dimensions: 3-5/8" L x 2-3/8" W x 7/8" H (92.1 mm x 60.3 mm x 22.2 mm)
Weight: 4.6 oz (130 g) with batteries
Color: Neptune blue, shatter-resistant polypropylene
Battery Type: Two (2) AA 1.5 V non-rechargeable Alkaline batteries
(BAT 001), 42 mA nom. current drain, 30 hours approx. life
(OR)
Two (2) AA 1.5 V NiMH rechargeable batteries (BAT 026),
20 hours per charge approx., recharges in 14–16 hours, uses CHG 1600
Multiple Battery Charger
Operating Frequencies: Fixed 173.400 (UK only), 174.100, 174.300, 175.500, 176.300 MHz
Stability: ± .005%, crystal reference
FM Deviation: Narrow-band FM, 10 kHz, 100 µS de-emphasis
AFC Range: ± 120 kHz
Sensitivity: .5 µV at 12 dB Sinad with squelch defeated,
squelches at 8 µV for min. 50 dB S/N ratio
Freq Response: 200 Hz to 10 kHz, +2, –4 dB
Signal–Noise Ratio: 60 dB at 10 µV
Receive Antenna: Integral with earphone cord
Audio Output: 35 mW, max. at 16 Ω; for use with 8–32 Ω mono headphones
Output Connector: 3.5 mm mono phone jack
Squelch: Set to turn off audio under weak or no signal condition
Controls: Volume: thumbwheel/on/off/volume
Indicators: “On” LED
Approvals: MPT 1345, ETS 300 422, CE
Note: Specifications are electrical performance
© 2004, Williams Sound Corp. CAT 080 C
European and Asian Sales Office:
Hearing Helper®Tour Guide System
Wireless, Portable FM Listening System, Models TGS 173 & TGS 174
TEL: +34 952 819 069
FAX: +34 952 819 201
E-mail: doreenarmstrong@hotmail.com
Mic
Jack
Mic
Williams Sound FM
Transmitter Top
Williams Sound
Hearing Helper
Transmitter Front
On/Off
On
Off
Switch
FM
On/Off
Indicator
®
Ear
Jack
EAR
Volume
Receiver Top
Williams Sound
Hearing Helper
Receiver Front
On/Off
Indicator
1
Volume
Control
®
Williams Sound
®
Helping People Hear
www.tour-guide-systems.com
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