Tie a rock (or an adjustable wrench or anything like that) to the right size cord, swing it up there until you get it over the limb, lower it, tie a pulley to it, run your cable or a cable attached to an insulator to the cable, pull it back up to hang under the limb, wrap the original cord around the tree until you can tie it off. If you're running a long wire for medium wave, run the other end to your house. The pulley will keep the wire taut when the wind blows and keep it from snapping. If you're running anything else, same thing just maybe the connector to your set coupled to a different place. Oh, tie a gallon bottle filled with water (or a brick) to the line hanging from the pulley, doh!
I still have my old SWL 7 multi trap antenna from the '60s.
It doesn't have to be that high but it will be directional. They also made an SWV 7 vertical antenna but I don't know how good it was.
The pulley trick works great for keeping it taut and keeping it from snapping. I'd give it a couple of ft.
I have two Hallicrafters SX-43s too, one for parts. I use a couple of newer rceivers now but those old Hallicrafters were good radios.
They are general coverage but they cover everything from long wave-medium wave-short wave. I never got into HAM radio but was heavy into SWL.
J