On Dec 27, 9:26*pm, wrote:
Hello all,
*I presently have an 80m dipole fed with about 50 feet of coax. I also
have a 40m dipole fed with 50 feet of coax at the same height. If I
was to replace the coax on the 80m dipole with open wire feeder and
used it on 40m, would it have more gain than the coax fed 40m dipole?
Also, would it receive better?

The gain would be different, but that's because the pattern would
change, you would have more gain broadside but at the expense of less
gain elsewhere in the pattern.

You would very definitely need a tuner, but that's not a disadvantage.

I am a strong strong proponent of the "all band doublet", with a tuner
what you describe would be a useful antenna on all ham bands shorter
than 80M. And with a little cleverness (tie the two conductors
together and feed it like a vertical against ground with a tuner) it
will be usable on 160M too.

Tim N3QE