Theplanters95 wrote:

It looks like I could place a loop around the eaves of my house and it would,
in theory, be resonant around the 40m band. I'm planning on either feeding it
with ladder line or use a 4:1 balun with a very short run into the house.

How can I make the antenna also resonant on 75m? I am planning on using it for
75m-10m.

If it is one WL on 40m, it will be 1/2WL on 75m. Install an insulator at the
half-way point. Leave it open for 75m. Jumper across it for the higher bands.
--
73, Cecil, W5DXP