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QHM-22 / 22D. Microphone. QHM-22 / 22D Difference. Both are compatible with any radio requiring the Kenwood K1 connector (Kenwood, Anytone, BTech, Baofeng, Wouxun, etc) The difference is the PTT configuration. The QHM-22D is configured with a second PTT button for compatibility with UV82 series radios, such as the 82HP, 82L, 82, GT5, GT5L, etc. A Bachelor of Technology (Latin Baccalaureus Technologiae, commonly abbreviated as B.Tech. or BTech; with honours as B.Tech. (Hons.)) is an undergraduate academic degree conferred after the completion of a three to five-year program of studies at an accredited university or accredited university-level institution.. Australia. In Australia, the Bachelor of Technology (BTech) degree.