Making Weather Resistance Outdoor BiQuad

Outdoor Biquad

This is a new biquad to replace the old one that have had a good wallop by the weather. The microwave resistance food container that I encased it with, is not weather resistance. Only left the biquad and the reflector plus some length of kite string somehow got entangled around it.

I have a 14cm frying pan that had its handle burnt at the bracket. I make use of the pan as a reflector and as a shallow waveguide. The biquad antenna itself is constructed from a transformer wire salvaged from a dead switching power supply. Since the old setup had a BNC connection, the new biquad still maintain the BNC connection, although now if I am building a totally new setup, I would prefer TNC. BNC is not up to par but it is almost there and cheaper.

Here is the construction in pictures.

A slightly smaller hole drilled and the BNC panel connector tightly attached for good mechanical and electrical contact

A look behind

A 10mm copper tube cut, shaped and sliced, then wrapped around the thread. A piece of wire wound around and twisted making sure for a good mechanical and electrical connections. Lastly solder applied using portable gas torch to fill in every nook and cranny

Biquad with sides approximately 30.5mm constructed

Biquad was then soldered to the BNC panel connector and copper tube assembly. A 15mm strip of hard paper placed beneath to give the desired distance between antenna and reflector. Not a neat soldering because the iron was not hot enough. Finally paint applied all over

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