"rhymer" wrote in message
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Yes, I was referring to more than one dipole on a single feed line (in
my case two dipoles 40 and 15).

OM,

Since a dipole will also work on the third harmonic of its design frequency,
it's very common to use a 40 M dipole on 15. You usually don't need a second
dipole to work 15 if you already have one for 40.

As other have pointed out, however, it's perfectly fine to put dipoles for
other bands on the same feedline: 20, 17, or whatever. The antenna that's
not in resonance presents a high impedance to the feedline, and the resonant
dipole takes the power.

HTH.

73, Bill