Amateur radio : how and why of wireless with complete instructions on operation of receiving outfits (1922)
Grainger, Maurice J · New York : James A. McCann · leaf 48
htning switch is closed, an antennaacts as a lightning rod and is a protection,rather than a source of danger to the building. The principal part of the station is the re-ceiving set. In the set here described it issubdivided into two parts, the tuner and thedetector, and in more complicated sets… … 28 AMATEUR RADIO house, it relieves one of the need of erectingone or both antenna supports. The antennashould not be less than 30 feet above theground and its length should be between 75and 100 feet. (See Fig. 7.) While thisfigure indicates a horizontal antenna, it is notimportant that it be…
Radio · Amateur radio stations
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