I am looking for an old fashioned tri-band beam with band traps for sale cheap or a design for a home brew version. I would be single if I bought a new one a $600 plus shipping. So am going cheapskate. I can build my own if I have drawings and tubing sizes etc. and I already have an 40 foot tower with work platform to put it on.

I have a triband bumper mount, trapped vertical, but I think the two element beam would work better.