Step 5Solder the antenna wire
The BNC connector has some insulation around it's central conductor. You must cut this until it is 1mm above the metal plate.
The copper wire must run at a height of 1mm above the plate over a length of 30mm before following the spiral shape. This is very important to tune the antenna's VSWR. A good VSWR basically means that the antenna is capable of 'absorbing' the radio waves coming from the wifi card instead of reflecting them back to the card.
Cutting the isolation of the connector helps you to get the right height when soldering the wire. You can place some tape below the copper wire on the plate to prevent short circuits. Since the wire is quite thick, it easily retains the shape you put it in. It is very important to cut the 1.5mm wire that is too long at the BNC connector. One side of this wire goes up into the spiral, the part sticking out at the other end must be cut close to the central pin of the connector. Leaving a part here will make the VSWR worse.
When the antenna wire is soldered to the connetor, we can push the squares down over the beam. This will hold the beam upright. As a last step, the squares are fixed to the plate with some tape.
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