The ADT-200A is ready!
The ADT-200A is world's first amateur radio transceiver with completely digital signal processing. The device is equipped with the latest DSP technology, moreover it is produced professionally with state-of-the-art technology.
The software algorithms for the signal processing have been carefully developed and have been optimized several times. Tests show that the ADT-200A can keep up with even the best commercial receivers regarding selectivity, sensitivity and intelligibility.
As a novelty the transmit signal is processed by adaptive predistortion, a technique that is used for the first time in amateur radio. This technology stands out due to high efficiency and a remarkably clean transmit spectrum, combined with an exceptionnally clear modulation.
The Highlights of the ADT-200A
Receiver
- 4 receivers with independent frequency selection
- Automatic fine tuning for AM and CW via push button
- Audio recorder capable of recording up to 60 minutes
- Several noise blankers eliminate even extreme impulses
- Linear S-meter with an unbelievable range of -148dBm up to +17dBm and a typical error of ±1dB
Transmitter
- Adaptive Predistortion allows PA efficiency up to 70% and results in a very clean modulation
- Low distortion voice enhancer replaces the legacy speech compressor
- Clean output spectrum with an intermodulation ratio of >45dBc
- Calibrated VSWR- and power meter working from 100mW
Planned further developments
- Spectrum analysis, displayed on a PC
- Audio recorder with a capacity of 1 hour
- Web server module for remote access
- Morse decoder
- Digital operating modes
- Smart Antenna: directional RX antanna, also for the low bands (up to 160m)
- Network analyzer for exact measurement of antenna impedances up to 30MHz
- TRX-Module for 2m and 70cm