Williams Sound TGS 174, TGS 173 Hearing Helper Tour Guide System, Williams Sound, FM Transmitter

Hearing Helper® Tour Guide System

Wireless, Portable FM Listening System, Models TGS 173 & TGS 174

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

Mic		On/Off
	Mic	Off On Switch
Jack		FM

On/Off

Williams Sound FM Indicator

Transmitter Top

Williams Sound

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

Hearing Helper ®

Transmitter Front

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

Ear			On/Off
	EAR	Volume	Indicator
Jack
		1	Volume
			Control

Receiver Top

Williams Sound

Hearing Helper ®

Receiver Front

European and Asian Sales Office:

TEL:	+34 952 819 069
FAX:	+34 952 819 201
E-mail:	doreenarmstrong@hotmail.com

Williams Sound ®

Helping People Hear

www.tour-guide-systems.com

© 2004, Williams Sound Corp. CAT 080 C