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ANTENTOP- 01- 2015 # 019

Universal Beverage Antenna

 

 

Table 3

 

Transformer made on LDG Balun Core. Loaded on to single resistor 440 Ohm. Measurement by MFJ- 259B

 

Band

160

80

40

30

20

17

15

12

10

Z

42@j17

48@j8

45@j3

40@j3

35@j3

31@j8

29@j12

29@j17

27@j29

SWR

1.5

1.1

1.1

1.1

1.4

1.6

1.8

2.0

2.4

 

Table 4

 

Transformer made on LDG Balun Core. Loaded on to eleven 4.7-kOm resistors switched to bridge (440 Ohm overall). Measurement by MFJ- 259B

 

Band

160

80

40

30

20

17

15

12

10

Z

43@j15

47@j7

42@j4

37Z@j4

31

27@j5

24@j10

23@j16

23@j21

SWR

1.4

1.1

1.2

1.3

1.6

1.8

2.1

2.5

2.8

 

Grounding of the Beverage Antenna

 

Right grounding of the each sides of Beverage Antenna is not a simple task. For example, at receiving centers of ex- USSR the grounding of Beverage Antenna was made by 10- 15 radial wires that were dig on to depth 20- 40- cm into the ground. It was good RF and electrical grounding. But it was not for me. I made simplified grounding. The grounding consisted of two parts (see Figure 2).

 

One part was RF grounding. The grounding made suction of RF currents from the antenna wire. There were four wires in length 3- meter each. I used the same wire that for Beverage Antenna. The wires were dig on to depth 5- cm into the ground.

 

Another part of the grounding there was electrical grounding. Electrical grounding allows static electricity flow from the antenna wire to the ground. As well the grounding increases the safety of the Beverage Antenna at lightning time. Antenna works quiet on to receiving with electrical grounding. Figure 10 shows design of the electrical grounding. To make the grounding I used two copper strips (it was Copper Strapping from Home Depot) in length 3- feet and five copper tubes in length one foot each. The stuff was soldered according to the Figure 10.

 

I used compact Bernzomatic Butane Gas burner for soldering. Figure 11 shows soldered grounding.  Figure 12 shows grounding at the antenna (feeding side). Ditch in depth near 5- cm was made in the place of the copper strip. The strips were placed into the ditches. Copper tubes were hammered into the ground. After that a batch of earth (with grass seed) was covered the electrical grounding. Grass already covers my grounding.

 

Design of the Beverage Antenna

 

Wire of the Beverage Antenna was stapled to the wooden fence. Figure 13 shows stapled wire.

 

Figure 10 Design of the Electrical Grounding

 

 

 

 

Figure 11 Soldered Grounding

 

Termination resistor and transformer of Beverage Antenna were placed into food plastic boxes.

 

 

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May 1, 2016 22:10

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