Here is a very effective multi-band antenna that you can build yourself. The required 49:1 Un-Un can be built yourself at very low cost. The antenna is very efficient and can be bend around your back yard if need be.
00:00 Opening
01:19 Introduction
02:56 The Component Parts
03:511 Antenna Design
07:19 UnUn design
10:37 Building the UnUn
19:11 Do's and Don'ts
21:29 Antenna Length and Adjustments
24:52 Final Comments
UK Ham Radio Store
https://www.hamradiostore.co.uk
Line Isolator
https://www.youtube.com/watch?v=YlRkbOIi17g&t=43s