The idea is to lift a magnetic object by
a magnetic field at a location using electromagnetic
or the constructive interference of EM-waves.
Since EM-waves are composed of a magnetic field and a
electric field, by beaming many of them from the group
location above the ground, it should be possible
to create a magnetic field at the intersection of these
waves through some form of constructive interference.
The magnetic field could then be far above the earths
surface at 1km or 100km high.
A spinning magnetic object in this magnetic field would
then be levitated by this opposing magnetic field. The
spinning object would not fall over due to its spinning,
as the spinning magnetic toys can float above a
(Spin stabilized magnetic levitation - search google).
Note 1. MisterQED said em wave is alternating, but its
easy to find experiments on constructing standing EM-
waves. (Hertz standing wave between two reflectors).
Regardless if standing wave cannot be created in this
particular situation, the magnetic field of the object
being lifted could also be alternating by creating an
electrically powered alternating magnetic field through
use of coils of wires and current.
Also note that particular interference patterns of waves
generated from multiple sources can create a large
summation crest at a location in space.
Note 2. Ling said "The only way we can concentrate
magnetic fields is either by having very small air gaps,
or by conducting the magnetic field using something
other than air". Note that magnetic fields transfer
(almost) just as good in air as in empty outer
space. It has nothing to do with air, air doesn't
concentrate magnetic fields.
Note 3. I think some people mis-understand how EM-
waves transmit, an EM-wave is composed of an electric
field and a magnetic field at a particular frequency which
allows one field to create the other. The magnetic field
can be measured in a standing wave experiment, I did
this in high school science, very simple. Logically this
means that a magnetic filed can be created at a location
in space, although if only one small radio wave is being
used then its going to be a small magnetic field. There
are also many other radio waves creating many other
Its important to note that waves can be created so they
have constructive interference and destructive
interference and also standing waves can be created.
Therefore its quite a simple step to imagine the
interference of many strong EM-waves creating a strong
magnetic field at a location. Perhaps the power
requirements are huge, and it may fry any human beings
nearby but this is not a concern. The point is to lift an
object into space using a projected magnetic field.
Note 4. Consider two satellites in space at 100km distance between each other, an EM-wave such as a microwave is set up between then as a standing wave. An object in the middle of the two is experiencing a electric field and/or a magnetic field. Since there is a magnetic field here, classic standing wave experiment, then the object can use this to generate thrust.
Now consider the two satellites are above the earth atmosphere but at a large distance apart, so the beam goes through the atmosphere.
The object is in the atmosphere of earth and can therefore use the magnetic field of the standing wave beam to generate thrust.
So a solution that presents itself here is lift the object up to a height with helium gas baloon, then use this magnetic lifting mechanism to lift it into space.