I'm looking at purchasing a icom rx7 and although its not the primary use of this radio, I would like to listen to shortwave. So, i'm trying to find a half decent shortwave antenna.

I would like it to be a hank of wire with a SMA connector on one end (is this enough?), but what kind of wire and how long should it be? It needs to be portable enough that I'd carry it every day.

My google-fu isn't up to par to find these details, which I would assume it would be easy to find.

I know some of you guys are hams, so hopefully you can point me in the right direction.

Thanks,
Kris