Topband: K2AV FCP with 43' vertical

[Jim WA9YSD]

Call Balun Designs you can purchase an 1:2 un to un balun. Here you have a true way to feed a vertical. It works well for me.  If you can measure your input impedance at the feed point.  It should be around 25 to 35 ohms.
You may have to re tune the vertical 43 feet is not exactly a quarter wave resonate on any ham band. Resonate freq should be around 5.4mhz you may have to add some aluminum wire.
The K2AV FPC balun is a 1:2 unbalanced to balanced balun. The same company sells these as well.
Stay on course, fight a good fight, and keep the faith.    Jim
 K9TF/WA9YSD