1:9 HF Antenna Balun One Nine: Tiny Low-Cost 1:9 Balun Frequency Band
 
Long Wire HF Antenna RTL-SDR 160M-6M New
 
See it in use here.
 
Please use with random wire lengths, like.
 
Length in Meters
Length in feet
8.84
29
10.82
35.5
12.5
41
17.68
58
21.64
71
25.6
84
 
This is really not suitable for transmission unless your using a maximum of +28db (<.5w) for limited periods of time.
 
But, ideal as a receive antenna.