How to make an active wifi tetrapak antenna - fast & cheap way ...

Step 5 Next step ...

... is to make a small cardboard "oval" about 2cm deep tube type Key holder with some added "side holding wings", so take about 3cm wide enough long 0,5mm thick cardboard piece & wrap it around the Key to get a shape & maybe use some sticky tape to glue it around, keeping the tube shape. Take out the UsbKey (so do not glue the cardboard to tight around it) & cut out 4 of the "tube" 1cm side wings & spread them out @ 90-deg angle; remove/cut the wings leftovers on the tube. So you get a 4 leaves "daisy" shape Key holder to glue it (I used superglue) w/o a Key to a tetrapak bottom hole. When the glue dries, you can insert the Key later. The bottom of the antenna with inserted Key than should look like this somehow on the 1st photo ...

Her is also a 2nd-next (unfortunately not sharp) photo of the Netgear-WG111T Key I used for this antenna with some remarks (chip antenna is this side facing with hot tip up) with proper orientation for vertically polarized signals. Thats why is good to know the inside Key construction, for this type of antenna. So I needed to open it to give you proper info; chip antenna is located 7mm inside back from front plastic cover tip ...

Ps.: if using a plain Netgear-WG111 instead of my recommended T version, it has to be fliped axially for 180deg to mach the same signal polarization as the T version ; so with cheaper one the Netgear logo will be seen facing instead - 2nd slide ...