Cubic quad antenna PMR446 70cm radio
cults3d
I made this as a weekend project, dimensions are from a website http://www.csgnetwork.com/antennae5q2calc.html you just need to enter the frequency and hit the calc button, I have included a screen grab of 446mhz. I used 12 AWG copper wire to form the loops to fit inside the printed frames, I found the SWR to be very high so added a coax balun as found on this site http://www.m0zpk.co.uk/70cmbeam/ then all worked well. I have included the support arm but it was made for my rotator so will will have limited use, just mount the finished beam to the support arm and secure with 2 small cable ties. Bob Video of the beam in action can be found here https://youtu.be/UDt80SFOYec
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