Abstract: This paper presents a reconfigurable Yagi-Uda antenna. The driven element is a loop antenna and the parasitic elements are annular in shape. The antenna can be reconfigured by stretching the ...

Abstract: The design and analysis of a Directional antenna which oscillates at 433 MHz is given in the proposed paper, the antenna has been optimized to operate efficiently with a 16.6 dB reflection ...

张老师的名声在上海本地的ham圈可以说是如雷贯耳，以阴阳怪气，难为新人出名。 张老师令人咋舌的金句频出。 张老师好于挤兑他人来获得心灵上的满足。 在本次事件中的言论，称所有的ham都是事业无成、孩子不理、老婆无话、闲的无事，才玩无线电的；且 ...

A group of local volunteers is heading back to the bridges this Halloween. Members of the Drumlins Amateur Radio Club and Skenoh Island Amateur Radio Club will once again partner with New York State ...

Stories, Music, Life, including The Rewind from 1pm to 2pm with Anna. Local BBC Radio joins BBC Radio 5 Live through the night on a weekday.

A team of physicists at the University of Warsaw has built the world’s first all-optical radio receiver powered entirely by laser light. The device, developed by researchers from the Faculty of ...

West Ham are still waiting for their new manager bounce under Nuno Espirito Santo. The Portuguese coach has not won any of his three Premier League matches since taking over. The last Hammers manager ...