Sunday 14 October 2018

4 antennas feeding done

Today I managed to test the feeding I want to use for a 4 bay array.
As my stacking distance in horisontal plane is not an multiplier of a 1/4 lambda i made the vertical feeding wires slightly longer and bent them toward eachother slightly.


















The matching was some -25dB return loss but I did not try to tune it further but discovered that the vertical lines was slightly to long so I need to shorten them to fit perfectly.
Will continue making the other 4 dipoles and wires for thoose and also make the wires to connect the 2, 4 bays together.
Need to make some support for the balun and cables as the feedpoint will be at some distance from the main horisontal support boom.































The wires are interconnected with M4 screws and toothed washers and it seems ok but its a test but after looking at DL7APV solution using 4mm copper wires and soldered interconnections it looks as a much better solution.
Will ask the local electrical motor repair shop if they can get hold of 4mm copper wires to make a test later on.

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