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Beverage Antenna. Theoretical Look on Practical Result.

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ANTENTOP- 01- 2016 # 020

Beverage Antenna. Theoretical Look on Practical Result.

 

 

 

Figure 16

DD of modified Beverage Antenna with additional wire at termination load at 20- Meter Band

 

 

Figure 17

DD of modified Beverage Antenna with additional wire at termination load at 17- Meter Band

 

 

Figure 18

DD of modified Beverage Antenna with additional wire at termination load at 15- Meter Band

 

 

Figure 19

DD of modified Beverage Antenna with additional wire at termination load at 12- Meter Band

 

Anyway to have an objective appraisal the old and new antenna it needs to do A- B test. I did not do it. Unexpectedly I found that the antenna at some days have received lots industrial electrical interferences. Because of it and because of I need the 40, 30 and 20 meter Band the antenna was de- configured to the classical design. Though sometimes it seems to me that the antenna (with additional wire) worked very well at 17, 15, 12 and 10 Meter Bands. May be at some days I return back to experimenters with Beverage Antenna with additional wire at termination load.

 

Next my experiment with my Beverage Antenna was simple. Under the antenna I installed a copper wire that connected together ground at feeding transformer and ground at termination load. Figure 21 shows design of the Beverage Antenna. At early times when I experimented with Beverage Antenna I noticed that such additional wire very often improved efficiency of the Beverage Antenna. Parameters of the antenna were simulated with NEC for MMANA. Table 3 shows the data for the antenna. Maxima gain is given to the radiation angle at where it is.

 

 

Figure 20

 

DD of modified Beverage Antenna with additional wire at termination load at 10- Meter Band

 

 

 

 

 

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July 3, 2016 17:18

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