In reply to F5VGL:
Here, black is 20m inverted v dipole at 6m height, if you link 40m wires to it the wire ends would be 1m high.
Red is the 80m inv v doublet at same height, wire ends at ground level.
Unfortunetely I don’t know cw, but I have psk31 capability either with smartphone or netbook.
I use the same gear at my home qth, working european stations with 0,5-1W.
What I like in this antenna is the nvis capability, 0-400km contacts in 80-30m bands.
Jani OH9FZU