A TDOA RDF antenna, cheap and easy, built in PVC pipe for a little weather resistance

Submitted by kf7lqq on Wed, 10/12/2011 - 20:16

The Project:
A TDOA RDF antenna, cheap and easy, built in PVC pipe for a little weather resistance.
Built from: http://webhome.idirect.com/~griffith/tdoa.htm

1) Make sure your 9v battery fits inside your PVC - Use
2)trim your perf board to fit inside the PVC pipe, and build your circuit

I used a junction for the bottom section, with a piece of plastic trimmed for the battery rest

Drill a top cap for the antenna and Coax leads, and hot glue the outside for weather resistance

Make sure your battery leads are long enough to change the battery!
Rather than use a switch, I just unhook the battery to shut it off.