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ANTENTOP- 01- 2021, # 025

Dipole Antenna for the 50-MHz Band

 

Figure 7 Antenna in the Place of Installation

 

Table 1 Antenna Parameters at 50- MHz band Measured with the MFJ- 259B

F, MHz

50.0

50.100

50.180

50.450

50.560

51.0

52.0

R +X

67+18

75+10

79+0

80+0

14

42+22

29+8

SWR

1.5

1.5

1.5

1.5

1.5

1.6

1.8

 

Table 2 Antenna Parameters at 50- MHz band Measured with the MICRONTA SWR Meter

F, MHz

50.0

50.1

50.2

50.4

50.5

50.7

51.2

SWR

1.3

1.3

1.3

1.2

1.0

1.0

1.1

 

Table 3 Antenna Parameters of the antenna at 144- MHz band measured with the MFJ- 259B

F, MHz

140.0

141.0

142.0

142.5

143.0

144.0

145.0

R +X

32+10

57+25

61+6

46+6

42+6

57+13

57+7

SWR

1.7

1.6

1.2

1.1

1.1

1.3

1.2

 

 

Originally the two antennas were tested by receiving of the Beacons (propagation permitted!). It was noticed fairly clear difference in the direction of the antennas. However the major test what I waiting for was waiting for me the ARRL September VHF Contest. 11 September 2021 and 12 September 2021 - at the days it was no any propagation at the 6- meter band. No any beacons, no any stations...

Everyone who uses the band knows that at propagation the amateur stations and beacons are very loud. But it was not on the September' days of the 2021... No any propagation... Just loud roaring from the solar flare of the geomagnetic storm... Will wait for the next propagation to test the antennas.

73! de VA3ZNW

 

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Last Updated:

December 30, 2021 21:39

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