MicroHAM MICRO KEYER III

Micro KEYER III™ is the world's first and only amateur radio USB interface with high dynamic range, 24-bit audio processing chain on all signal phases. It is the most powerful All-In-One USB interface of the single radio, and the only USB interface to fully support digital and voice operation, including microphone switching in one box.
With a single USB port, the micro KEYER III™ works with any Windows-based recording or control program for CW, Voice, FSK and digital operations (RTTY, FT8, WSJT, PSK31, SSTV, etc.).
Micro KEYER III™ includes a CAT, radio control interface that supports all common standards (RS-232, CI-V, Kenwood and Yaesu TTL), a powerful CW memory keyer using K1EL's real WinKey, a Digital Voice Keyer for SSB, two channel audio processing for dual receiver transceivers, automatic microphone selection and buffer/sequencer for amplifier or LNA control.
Compared to 16-bit audio interfaces or any USB transceiver, including top-notch transceivers from well-known manufacturers (as of Fall 2018), the unique 24-bit USB audio processing in the micro KEYER III™ offers advantages across a range higher dynamics (>105 dB), preserving the performance of the transceiver even for audio processing on the computer (digital mode), otherwise limited by the 16-bit USB audio signal chain.
To connect to the transceiver, the micro KEYER III™ uses a special transceiver-specific DB37 cable, identical to the one used with the original MK, MKII or MK2R+. micro KEYER III™ maintains full backwards compatibility for native control from recording programs and is compatible with all accessories made for the MKII.
Along with completely new audio, the micro KEYER III™ offers many new features. For more details or to check what's new or different from the previous MKIII model.