Various antenna mounts for the Catalyst Machineworks SL5, SL6 and Norris frames using the top plate. I'm currently using this with an SMA mount on my SL6 but the 1.2mm version on my SL5. The goal is for the antenna to be held tightly enough to keep it out of the props, but still be floppy enough to withstand a bad crash. I added a dab of E6000 to hold the coax cable securely though I'm not sure it was necessary.
Note, I haven't tried the RG316 or RG178 versions, I just had them around to measure and they're common for FPV antennas so I thought why not.