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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:
Mic
Williams Sound FM
Off
On
FM
Transmitter Top
On/Off
Switch
Mic
Jack
On/Off
Indicator
Williams Sound
Hearing Helper
®
Transmitter Front
Receiver Top
On/Off
Indicator
Ear
Jack
Volume
Control
EAR
Volume
1
Williams Sound
Hearing Helper
®
Receiver Front
Williams Sound
®
Helping People Hear
www.tour-guide-systems.com
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