QFH Antenna Build

From Scott - 2M0VSR:

Credits

Inspired by this build: https://tf1ez.com/qfh-antenna-build/

Summary Instructions

The above link has a better guide but the TLDR version is:

Generate and print the paper templates based on the type of PVC pipe you have. Use: https://jcoppens.com/ant/qfh/calc.en.php
Tape the cut-outs onto the PVC pipe, making due they are aligned down the pipe.
Drill out the holes. The centre ones are not strictly needed but you may find it useful to use some wooden dowel rods to support the banding.
Cut the threaded rods down to size based on the calculator. Leaving them a little long won't do any harm.
Put the threaded rods though and use a washer/nut against the PVC pipe to hold in place.
Cut the Banding so that it stretches to the opposite bottom rod. I'd leave a bit extra and trim.
Use 2 nuts/washers to lock in place the banding on each end.
Attach the Coax ends to the top of the antenna and run it down the tube. Tie it off to the bottom with some zip ties for strain relief.

Notes:

You can use low gauge wire as an alternative to banding but it's much more difficult to work with and get aligned well. I used 10mm earth wire for an earlier build and it worked ok.

Parts List

Whole thing can be built for less than ~£25. Less if you shop around / scavenge a bit more.