Satellite Antenna
Satellite antenna
The satellite antenna is an artificial satellite, which is placed in
space. The main purpose of satellite antenna is to serve communication.
It solves the purpose of reconnaissance with the use of radio at
microwave frequencies. An earth station is located on the ground, which
use to transmit the radio waves. The satellite antenna use
geosynchronous orbit beside recent system with the earth orbiting
satellite.
Tips for satellite antenna
Mostly satellite antenna is build of materials of junk that most of the
people want it to throw away. It is very easy to make a satellite
antenna. Build a VHF or UHF ground plane antenna and larger wire scrap.
The vertical element should be soldered to the conductor located in the
center. Attach all the four corners with the nuts and bolts. Vertical
element should be built a bit longer then calculated. Radials should be
bend down almost twenty five to thirty degrees.
Connector flange is not too far away as the distance is very small. The
vertical element should be trimmed in comparatively smaller increments
to obtain minimum SWR towards the lower end, where the will be done.
The SWR should be lowest near the center when it starts to go back. If
it is not possible then trim the SWR wire till it is finished. Bend the
radials one by one to obtain one to one SWR.
Another important source of antenna material, which can be recycled, is
the corroded junked ham beams. First step is to disassemble the
aluminum element from present in the boom. Give an acid bath to the
elements that are being disassembled. Drill the holes on one boom away
from the existing holes. The distance should be around 2.5 cms. Secure
all the elements with the new metal screws in a way that the size is
larger then the original size.
This is done to serve the purpose that new screws fitted well in the
old holes. While constructing the antenna try not to lower the expenses
by not using bad quality products. Always use the products made up of
stainless steel. The extra cost will be compensated in the coming years
when there will be low maintenance cost.
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