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Mystery of the Broom Antenna

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ANTENTOP- 01- 2007, # 009

Mystery of the Broom Antenna

 

Figure 03 (drawn by I.G. by Reference 1) shows the grounding installed in the soil. It was a copper tube with holes filled by so name “silitit” (Russian hams at such grounding used instead the “silitit” a charcoal). Bunch of copper wires went down the tube. So, the grounding looks like a Broom Antenna reversed by the wires bunch to the ground. At advertise of the company was wrote: “…. Above the advantages of easy in the installation the antenna has advantages in the reception”. Last phrase was puzzled me, what are the advantages?

As usual BA antenna is considered as wire antennas with a capacitive load. Capacitive load made like a metal sheet was used by Hertz and Popov [02], capacitive loads made like several wires at the antenna end was used by Marconi [02],

 

capacitive loads made like wire’s toroid was used by Tesla [02].  However, no one used a capacitive load made like a broom because it is not optimal implementation of this one.

 

 Circle (having dimension like a broom antenna) with several radial wires will have the same capacity like the broom antenna.  Figure 2 shows a broom converted to an optimal capacitive load. At some description of the BA I found recommendation to use a strictly numbers of wires (19, 37 or 61 pieces) with length 50- 100 centimeters  and use angle between center line and wires from 45 to 90 degree. Of course, it is nonsense.  In theory 7 wires are enough for the antenna. BA made from 19- 37- 61 wires will have only a slightly more capacity compare to antenna made from 7 wires….

 

 

 

Figure 03 Grounding for Broom Antenna Installed in the Soil.

 

 

 

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