Quote Originally Posted by AF5TY View Post
Side question: Is a 40m inverted V fed with coax easily used on 30-10m with a tuner?
Simple answer; no. It should load on 40 & 15 without much trouble, but everything else will have an astronomical SWR. With enough coax, you might be able to get the tuner to load the setup, but the losses from the mismatch would mean you'd lose all your power (or most of it) in the coax. Very little would actually get to the antenna and radiate.

Running EZNEC 5, I get the following SWR on the other bands:

30m: 60:1
20m: 97:1
17m: 67:1
12m: 48:1
10m: >100:1

As Cor suggests, running a 40m dipole fed with ladder line (straight to the tuner, if possible) is a much better choice.