Good Morning and Season Greetings.
We setup an antenna in Jyothi Nivas College for the students who had recently participated in the workshop.
A Loop Skywire antenna was setup in the premises. The college had a good open area on the terrace with some building surrounding. We first constructed a base made of car tyre rims, which were welded with 2 feet of 3 inch diameter poles. Later a 10 feet of 2.5 inch diameter poles were erected on four sides. Couple of concrete blocks were placed on the tyre bases for providing some stability.
Below is the sketch of the Loop Skywire.
Few calculations:
Length of the Antenna wire in feet is given by L(Total) = 1005/Freq.
Where, Freq. is measured in MHz and here we have taken 7MHz, so as per the calculation L(Total) = 144 Feet (approximated to the nearest value). So, each side of the the antenna is given by L(Total)/4 = 36 Feet.
Once the antenna was setup, we tested the antenna performance with a commercial HF rig. Sudhindra, VU3PWT was able to make receive stations from Spain, Tokyo and Northern India(New Delhi).
We setup an antenna in Jyothi Nivas College for the students who had recently participated in the workshop.
A Loop Skywire antenna was setup in the premises. The college had a good open area on the terrace with some building surrounding. We first constructed a base made of car tyre rims, which were welded with 2 feet of 3 inch diameter poles. Later a 10 feet of 2.5 inch diameter poles were erected on four sides. Couple of concrete blocks were placed on the tyre bases for providing some stability.
Below is the sketch of the Loop Skywire.
Few calculations:
Length of the Antenna wire in feet is given by L(Total) = 1005/Freq.
Where, Freq. is measured in MHz and here we have taken 7MHz, so as per the calculation L(Total) = 144 Feet (approximated to the nearest value). So, each side of the the antenna is given by L(Total)/4 = 36 Feet.
Once the antenna was setup, we tested the antenna performance with a commercial HF rig. Sudhindra, VU3PWT was able to make receive stations from Spain, Tokyo and Northern India(New Delhi).
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