HT is an open-source hardware VHF or UHF radio designed to plug into the USB-C port of an Android smartphone and turn it into a handheld ham radio ...
Once upon a time, ham radio was all about CW and voice transmissions and little else. These days, the hobby is altogether richer, with a wide range of fancy digital data modes to play with.
Abstract: A frequency-switchable semiactive tag antenna that can perform well on both the on- and in-metal platforms is proposed. A double H-slot antenna has been employed for designing the tag, and ...
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