Ideal length of a dipole for SWL

Submitted by Jesse on Wed, 06/16/2021 - 19:09

Hi, I want to setup a dipole antenna on my terrace for SWL (mostly for HAM bands and air traffic).  What length should be ideal to cover both 20 and 40 meter bands ??  I need to keep the length minimum as I live in a rented apartment and the total area of the terrace is around 12 meters X 12 meters with no trees or a y other support around. Also, do i need to further put this dipole higher from the terrace?? or can I put close to the wall?? (Actually I dont want pipes or fixtures on the terrace, want to keep it minimum..) Please suggest any other ideas if you have.

What is the frequency band?

  Joined February 12, 2018      696
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