Telex SR-50 specifications l i s t e n i n g s y s t e m s, P E R S O N A L, R E C E I V E R S

A C C E S S O R I E S

ANL-4S Neckloop Assembly

(for use with hearing aids equipped with telecoils)

B HED-2 Collapsible Lightweight	B	C	J
				K
Headphone	A

CHED-3 Full Cushion Noise Reduction Headphones

DAFC-1 Under Chin Eartube

(for use with CMT-98 and Telethin Earphone Driver)

EES-1 Ear Speaker

FDEB-2 Dual Earbud with cord

G SEB-1 Single Earbud with cord		E	F
H	CCS-12 Replacement Cushion Covers
			I	M
	(Package of 12, for SEB-1, DEB-2 and HED-1 earbuds)
I	HED-1 Ultra Lightweight Headphone			L
J	HM-2 Head Worn Mic	D
K PH-21 Noise Canceling Head Worn Mic		G	H
L	OLM-10 Mic (Supplied with PST-170)
M HGA-1 1/2 Wave Dipole Gain Antenna				NOT SHOWN RM-S Single Rack Kit
				RM-D Double Rack Kit

S P E C I F I C A T I O N S

There are 17 standard frequency options for the following products:

72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz

P E R S O N A L

l i s t e n i n g s y s t e m s

T R A N S M I T T E R S

ST-300 17-channel Transmitter (catalog no. 71912-000)

RF Frequency Range	72 to 76 MHz
Modulation:	FM ±25 KHz deviation
Signal-To-Noise Ratio	58 dB (77 dB with E.D.R.)
Maximum Deviation	±25 KHz
Audio Input	Balanced XLR-3F and unbalanced 1/4”
Antenna	1/4” wave telescoping omnidirectional
Audio Controls	Audio input level, monitor jack volume, E.D.R.
Power Requirements	13-20 Vdc or 12 Vac; 115Vac 60 Hz @ 300 mA
	plug-in wallpack power supply
Dimensions	H 1-3/4” (4.5 cm) x W 7-1/2” (19.2 cm) x
	D 5.9” (15 cm)
FCC ID	B5DM522
Backlit LCD Display	Ch., Freq, Audio Meter, Input setup,
	RF level, and E.D.R.
RF Output Power @ 3M
Normal	25K µV/m
High	80K µV/m

PST-170 17-channel Transmitter (catalog no. 71914-000)

Audio Input Characteristics	Mic TA4M connector, 7.75 mV RMS input
	for ±25 KHz deviation. Impedance, 10K Ohms,
	nominal. Aux. Input, Female 3.5mm. 100mV
	Unbalanced, 100K Ohm nominal
Antenna	Permanently attached trailing wire
Modulation:	FM ±25 KHz deviation
Frequency Response (System)	100 Hz to 10,000 Hz
System Signal-To-Noise	58 dB (77 dB with E.D.R.)
Pre-emphasis	115 µ seconds
Maximum RF Power	80K µV/m @ 3 m
Power Requirements	(2) AA batteries, Alkaline, NiMH or NICAD
	8 hours Alkaline, 8 hours NiMH, 4 hours NICAD
FCC ID	B5DM521

R E C E I V E R S

SR-400 17-channel RECEIVER (catalog no. 71913-000)

Power Requirements	(2) AA batteries, Alkaline, NiMH or NICAD
	20 hours Alkaline, 16 hours NiMH, 8 hours NICAD
Audio Frequency Response	<3 dB Variation (100 Hz-10 KHz)
Modulation:	FM ±25 KHz deviation
Sensitivity	0.5 µV typical, 1.0 µV maximum,12 dB SINAD
Image Rejection	>65 dB
Signal-To-Noise Ratio	>77 dB with E.D.R.
Distortion	<2% T.H.D.
Audio Output @ 10% distortion	into 8 Ohms:	2.0V / 15mW 3.0V / 80mV
	into 32 Ohms:	2.0V / 10mW 3.0V / 50mW
Antenna Type	omnidirectional in earphone cord
Audio Controls	Volume, On/Off, High frequency boost control, E.D.R.
Earphone Connector Type	3.5 mm stereo or mono
Dimensions	H 4” (101 mm) x W 2-3/4” (70 mm) x D 1” (25 mm)
Visual Indicators	Backlit LCD Channel, Hi Freq, E.D.R.
Charger Contacts	Bottom of unit
FCC	Complies with Part 15

SR-50 RECEIVER (catalog no. 71155-XXX*)

Power Requirements	(2) AA batteries, Alkaline, NiMH or NICAD
	30 hours Alkaline, 20 hours NiMH, 10 hours NICAD
Audio Frequency Response	<3 dB Variation (100 Hz-10 KHz)
Sensitivity	0.5 µV typical, 1.0 µV maximum,12 dB SINAD
Signal-To-Noise @ 1 mV Input	>60 dB
Distortion	<2% T.H.D.
Audio Output @ 10% distortion	into 8 Ohms:	2.0V / 15mW	3.0V / 80mV
	into 32 Ohms:	2.0V / 10mW	3.0V / 50mW
Antenna Type	omnidirectional in earphone cord
Controls	Volume/On/Off Switch
Dimensions	H 4” (101 mm) x W 2-3/4”(70 mm) x D 1” (25 mm)
Visual Indicators	Red LED On Indicator
Earphone Connector Type	3.5 mm stereo or mono
Charger Contacts	Bottom of unit
FCC	Complies with Part 15

In accordance with Federal Communications Commission (FCC) rules and regulations, Telex		* The last three digits in the transmitter catalog number (XXX) will be determined
SoundMate personal listening systems are intended only for use in providing auditory assistance to		by the frequency that is selected.
the handicapped and are not intended for use by the general public.
Americas	Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA
USA	Phone: 1-800-392-3497, Fax: 1-800-955-6831
Canada	Phone: 1-866-505-5551, Fax: 1-866-336-8467
Latin America	Phone: 1-952-887-5532, Fax: 1-952-736-4212

©2004 TELEX COMMUNICATIONS, INC. SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE. PA-20652 USA 6/04