T-antenna brace for r9m and crossfire

thingiverse

designed and tuned for 1.3mm solid copper wire, du-bro antenna tubes and rg402 coax. Use 78mm elements for 868mhz and 74mm for 915mhz. using other materials may effect the tune, with the specifyed materials the tune will be spot on perfect if you build it right. Use the pictures as a building guide, doing it like shown will create indestructible solder joints. make the elements longer and cut after soldering, measure from the center of the coax for the Active element and from the shield for the passive element. Mark the active part so you know how to orient it, dont put a piece of heatshrink on the tip of the tube like I done in the Picture, its just a temorary thing I did and it will throw the tune off. just mark it with a pen or us a different coloured heatshrink band on the brace.