# When I am told that a dipole must have a determined length, does that include the space between both elements?

I am trying to build an antenna for receiving NOAA satellites and I need to build two 137,5MHz dipoles. When I enter the frequency and width of the wires in a calculator, I obtain that $$λ/2=1.09\,\mathrm{m}$$ and the length of the dipole should be 1.05 m. (It would be great if by the way someone could explain why this difference occurs.)

However, does that mean that the total length of the antenna must be that or that each leg must be 1.05/2 m? And does the separation between the legs affect the antenna measurements in a noticeable way? If so, is it the smaller the better?