WA-TX-01-R / WA-RX-01A-R0 pages

UHF Wireless Audio Transmitter/Receiver

WA-TX-01-R / WA-RX-01A-R

Transmitter WA-TX-01-R and receiver WA-RX-01A-R are RF modules that transfer audio (analog) signal in 863-865MHz European
audio bands. All necessary circuits from RF part to noise reduction system are in a compact case for easy integration to user
applications. WA-TX-01-R and WA-RX-01A-R has wide dynamic range (100dB) to realize high quality sound transmission.
The system adopts a compander/expander noise reduction system. In addition, outstanding feature of WA-TX-01 is low voltage,
low current and compact size. It is achieved by a high stability SAW resonator technology. WA-TX-01 is optimal transmitter for
integration into a user system requiring a small space and battery powered portable operation. 4 channels are available for
simultaneous system operation in one site.

Feature
100dB wide dynamic range with noise reduction system
Frequency response from 50Hz to 15kHz
Fixed frequency in 863-865MHz European audio band
Low current for longer battery life (TX: 25mA Max.)
Single UM4 (1.5V) battery operation with DC/DC converter
Built in mute circuit
All functions in a compact case (TX: 27X19X5.5mm)
Easy installation for user system
R&TTE (EN 300 422 / EN 301 357) / RoHS compliance

Application
Wireless microphone system
Wireless portable sound system
Audio guidance system (Museum tour guide etc.)
Wireless conference system
Hall sound reinforcement system
Sound/voice monitor

Common

Item
Frequency
Number of RF channels
Frequency Type
Distance
S/N ratio
Audio Frequency response
T.H.D
Emphasis
Operating temperature

Specification
863.125, 863.625, 864.500, 864.875MHz
Single (Fixed)
F3E
50m (line of sight)
90dB (W/IHF-A Filter)
50Hz to 15kHz +/-3.5dB (Output level -50dBv+/-3dB)
2% (@AF1kHz, Dev.=15kHz or 7.5kHz)
50u/sec
0 to 50 degree C

WA-RX-01A-R

WA-TX-01-R
Item
Oscillation type
RF power
Modulation
Frequency stability
Pre-emphasis
Noise reduction type
Spurious emission
Deviation
Audio input level
Audio input impedance
I/O connector
Max.DC input to audio input
Supply voltage
Current consumption
Dimensions
Weight

Specification
SAW Oscillator crystal based
2mW
Variable reactance modulation
+/-10kHz
50usec
Compander
1uW Max.
15kHz (1kHz@-25dBv)
-115 to -15 dBv (1kHz)
5 kohm
4P connector
0V DC Max.
3 to 9V
25mA Max.
W27 x D19 x H5.5mm
5g

*0dBv =0.775V
*Data of specification is measured at 25C unless otherwise specified.

CIRCUIT DESIGN, INC.
http://www.cdt21.com/
WA-TX/RX-01-R DS ver1.0 Apr. 06
DS_WA-01-R_v10e

Item
Receiving method
Local oscillation type
Oscillation frequency
IF frequency
Noise reduction type
Sensitivity
Squelch sensitivity
Audio output level
Audio output impedance
I/O connector
Supply voltage
Current consumption
Dimensions
Weight

Specification
Single super heterodyne
Crystal controlled
(f0-10.7MHz)/10
10.7MHz
Expander
21dBuV (@THD2%)
17dBuV +/- 4dB
-20 dBv (Dev. 15kHz),
Max-10dBv (Dev.30kHz)
10 kohm (Unbalanced output)
6P connector
3 to 12V
30mA
W36 x D26 x H8 mm
15g

Specifications are subject to change without prior notice

International Business Division
7557-1 Hotaka, Azumino, Nagano 399-8303, Japan
Tel:+81-263-82-1024
Fax:+81+263-82-1016