A Windom, a true Windom, is 1/2 wavelength long and fed 37% off of one
end with a SINGLE wire [not coax, not 450 ohm line, nothing but a single
wire].

There is no such thing as an end fed windom.

There is an end fed 1/2 wavelength DIPOLE that can be fed with 450
ladder line or 600 ohm open wire feeders and a good balanced line tuner.
It will work on the fundamental and all even harmonics.

So, a 130 foot dipole end fed with 600 or 450 line and a balanced tuner
will work just fine on 80, 40, 20, and 10 meters.

GeorgeF wrote:
I am currently using a 150' randomwire for 80 & 40 meters. Its
connected to the "wire" terminal of an MFJ-949 tuner. Been happy so far
with the conntacts made.

I'm considering taking an turning it into an endfeed windom simply by
running 450 ohm ladder line from the MFJ-949 to the top of my 30' mast
which current supports the randomwire. I'll be cutting the randomwire
at the mast and soldering one side of the 450 line while letting the
otherside of the 450 line not attached to anything.

Is there any advantage of doing this? Basically I'm taking a 150'
randomwire and turning it into about a 120' endfeed windom, will it be
worth the effort?

George