Enjoy digital voice
communications while maintaining analogue
capabilities
The ARD9000 makes digital voice
communications FUN & affordable. Now you can use your
existing analogue transceiver to work digital voice on Amateur
Radio bands without making any modifications to your
transceiver.
No transceiver modifications
needed
The ARD9000 uses the same audio frequencies (300
Hz ~ 2500 Hz) as microphone audio to modulate the voice
signal. This allows you to use an analogue radio as a digital
voice radio.
Works on Single Side Band (SSB)
mode
The Automatic frequency clarifier function adjusts
frequency drift automatically in the SSB mode. (Approximately
up to +/- 125 Hz). Utilizes the OFDM (Multi Carrier
Modulation) circuit that is effective against Multi-path or
Selective Fading.
Automatic digital
receive
Automatic voice signal detector recognizes the
received signal as analogue or digital, automatically
switching to the appropriate mode.
Built-in high grade Vocoder
(AMBE)
Utilizing high-grade digital voice compression
delivers quality digital voice communications.
Built-in FEC error correction
A
powerful error correction circuit delivers stable and reliable
communications.
Small and compact unit. Easy to
operate
Simply connect the ARD9000 between the
microphone jack and microphone. No complicated modifications
necessary. Optional interface cables for most popular
transceivers are available or you can build your own
connectors.
Wide range of operating
voltages
Operates on 10 to 16 V DC from an external
power source.
DSP
Utilizes a uniquely designed
high performance DSP engine.
Uses established G4GUO open
protocol
The use of open digital protocol means use of
the ARD9000 is permitted on Amateur Radio bands (UK, USA,
Japan and most countries are
permitted) | 
