Dipole antenna other monopole) antennas on the basis of dipole antennas of which they are one half. German physicist Heinrich Hertz first demonstrated the existence of radio waves in 1887 using what we now know as a dipole antenna (with capacitative end-loading). On the other hand, Guglielmo Marconi empirically found that he could just ground the transmitter (or one side of a transmission line, if used) dispensing with one half of the antenna, thus realizing the "vertical" or monopole antenna. For the low frequencies Marconi employed to achieve long-distance communications, this form was more practical; when radio moved to higher frequencies (especially
The Loneliness of the Long Distance Walker sabotage his medical test fail, Walker is invalided out because he's allergic to corned beef. The radio episode still exists and was released on Series 1 DVD, along with the other 2 missing episodes. The Loneliness of the Long Distance Walker The Loneliness of the Long Distance Walker is a missing episode in the British comedy series "Dad's Army". It was originally transmitted on Saturday 15 March 1969. Although screenshots and clips of the episode exist, the full episode is still missing from BBC Archives. To his complete surprise, Walker receives his call-up papers. Mainwaring tries his best to get