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Features:
Digital voice communications using existing analog 2 way radios with encryption.
The ARD9900 uses the same audio frequencies (300 Hz ~ 2500 Hz) as microphone
audio to modulate the voice signal. This allows you to use an analog radio as a digital
voice transceiver.
Digital voice communications in the 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 ODFM (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 analog or digital,
automatically switching to the appropriate mode.
Digital Slow Scan TV (SSTV)
Built-in video-capture function (NTSC or PAL depending on version)
Compresses the signal into our original adaptive JPEG format. Send and receive
images in the Digital mode. Built-in video output connector allows viewing the picture on
an external monitor.
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.
Data communications on the HF band
Data communication is possible on the HF (High frequency) bands at no extra cost.
(Speed may be limited by regulations in certain jurisdictions.)
Small and compact unit. Easy to operate.
Simply connect the ARD9900 to the microphone jack and the speaker out jack. No
complicated or risky radio modifications are necessary.
Utilizes a uniquely designed high performance DSP (Digital Signal Processor) engine
Battery operation for field use.
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