Noise difference between the two antennas was from
5 up to 10- dB. Noise increased when Antenna UA6AGW V.40.21 was
rotated in direction to the central part of the city. Then antenna
UA6AGW V.40.21 was oriented to minimum of the noise. At the position
the Antenna UA6AGW V.40.21 (compare to Antenna UA6AGW V.40.02)
gives advantage at reception of weak signals.
Test at 4-meters height.
At height 4- meters above the ground antenna UA6AGW
V.40.21 worked in the same way as at 6- meter height above the
ground. No detuning in the resonance frequency was found. Antenna
provided reception with low noise at day time period.
It was found very interesting property of the antenna
UA6AGW V.40.21. At evening time the antenna provided reception
of the nearest stations with lower level compare with Antenna
Stations, placed at radius 400- 500- km, were received
lower then 10- dB. Stations, placed at radius 400- 800- km, were
received lower then 5- dB. Stations placed at distance 1000- km
and more from the antenna was received with the same level as
with Antenna UA6AGW V.40.02.
Antenna UA6AGW V.40.21 could work at a small height.
The antenna takes small room. Antenna made from low- cost materials.
Antenna is easy to tuning and installations.