SMA Antenna holder for 27mm spaced standoffs

thingiverse

I designed several front clip versions to go under the camera, each with modifications for a camera lens. These versions allow for different camera angles - the lowest is typical for most drones, while the highest is more aggressive. After searching for a solution to mounting my SMA Pagoda or Aomway style antenna and trying several options, I created this design. The main problem with typical antenna mounts is that they have a weak spot at the base of the SMA connector where the cable will get strained over time and eventually stop holding its shape. This design takes the strain away from the brass mount and extends it to a larger area of the cable itself. The clip was intended to be installed with at least one standoff removed, and it won't simply clip on. This was done intentionally to prevent popping off in a crash. It's designed to fit any 27mm spaced standoff, and it fits my modified XL5 frame perfectly. The changes I made refer to the standoffs being lowered to 25mm in height. I use standard aluminum standoffs with hex or knurled ends that leave the middle span with a smaller diameter than the ends. However, this design would also fit into the taper of 28mm and 30mm standoffs. The long one pictured is 35mm and has some play top to bottom. Keep in mind that this puts the brass SMA inside the body of your drone a little ways, so you'll need some planning and cable control. The notched version of the clip has a little protrusion to wrap a zip tie around and keep the antenna from spinning. The notched version of the 120 wedge has a small opening to further add support with craft wire or a simple twist tie. As seen in the photo, I inserted the twist tie around all three wedges (inside the void) then used a needle nose to twist it tightly.