Yagi Antenna 1280MHz 4 Element FPV

thingiverse

This thing is a 4-element, 9dBi directional yagi antenna designed for FPV flying that has been tuned to the 1280MHz frequency. It's built using 2mm pushrods and a piece of coax cable with an SMA connector. Note that this antenna design does not give the best reception; use this antenna for better long-range performance - https://www.thingiverse.com/thing:2392737 The antenna dimensions come from IBCrazy's thread on RCGroups - http://www.rcgroups.com/forums/showthread.php?t=1266148. A 3D Sketchup file is included that can be used as a template to create a yagi tuned to a different frequency. Parts 2mm Push Rods (see lengths required below) - http://www.hobbyking.com/hobbyking/store/__28821__Metal_Push_Rods_M2xL300_2pcs_set_.html SMA RG316 Coaxial Cable x 30cm - http://www.ebay.com.au/itm/10-15-30-50cm-1m-SMA-Male-Jack-to-Female-Nut-Extension-RF-Pigtail-Cable-RG316-/191490074919?var=&hash=item2c95b2a927:m:m7wcOaCmV65T-xtusEKsghQ Cable Ties x 2 - http://www.hobbyking.com/hobbyking/store/__46892__Cable_Ties_160_x_2_5mm_Black_100pcs_.html Instructions Cut five pieces of 2mm pushrods to the following lengths: 112.8mm, 53.0mm (x2), 104.1mm & 95.5mm. Insert the pushrods into the 3D printed housing. Place 112.8mm in the first slot, 53.0mm x 2 in the second slot upper and lower, 104.1mm in the third slot, and 95.5mm in the fourth slot. Remove eight millimeters from the coax cable outer plastic sheath. Fold back the woven ground shield and twist it together. Remove five millimeters from the inner conductor shield. Tin the ground shield and inner conductor. Insert the coax cable into the slot. Align the ground shield with the lower pushrod and the inner conductor with the upper pushrod. Add cable ties to hold the coax cable in place. Solder the coax cable inner conductor and ground shield to the pushrods.