Wireless audio modules
The WA-TX-01 and WA-RX-01A are unique RF
modules that have all the necessary circuits for high
quality audio communication contained in compact
cases.
- 2mW power @ 3V
- 863 - 865 MHz band
- 50 Hz to 15 kHz
- R&TTE compliance
Find out more...
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This is a special issue for the wireless audio
transmitter WA-TX-01 and receiver WA-RX-01A. The
WA modules are compact while offering high quality
audio transmission using a compander noise reduction
system. This newsletter explains the unique technical
advantages of WA modules, and good application
examples.
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Application examples
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Here, you can view good application examples using
the wireless audio modules WA-TX-01 and WA-RX-
01A.
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Easy-to-build but offering high quality audio transmission
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Elektor Electronics, a well-
known electronics magazine, tested a wireless
microphone with the WA-TX-01 and WA-RX-01A.
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The compander noise reduction system
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The wireless audio modules use the compander noise
reduction system to reduce the occupied bandwidth
and realize wide dynamic range (100 dB) and clear
sound.
The signal is compressed to half at a ratio of 2:1 by
the compressor and then, in an exactly opposite
way, expanded to double at a 1:2 ratio by an
expander.
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Operating frequency plan
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The WA-TX-01 and WA-RX-01A modules are fixed
single channel models, but there are four separate
channels available within the 863 - 865 MHz
European harmonized band.
These 4 frequencies are selected so that there is no
interference with each other when the units are
operated in the same location.
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