I found a 50 foot pack of 18 gauge speaker wire for $2 (a dollar is now $2 due to inflation) and on the way home I thought “Hey an Antenna”
Split the speaker wire down the middle. The first wire is 50 feet and solder on a spade lug or a button as an insulator. I use Nite-Eze Plastic Carabiners from a key ring. You get 7 of these.
Solder onto the wire a banana plug
The second wore gets cut into two pieces 33 feet and 17 feet. These are counterpoises. Again choose how you want each end to go. I put both on a single banana plug.
Your end point to the rig is a Binding post to BNC adapter Ebay special $2 but I found some great Ponoma types at Pacificon
This works great on the FT-817 and the Elecraft T1 tuner or your KX3/KX2 with built in tuner
Its an up and over as you throw it up and over a tree or use a fishing pole.
Congratulations You now have a great 40m-10m antenna