ESR,electron spin resonance is used in spectroscopy to detect presence
of the materials,that have a ODD number of nucleons,materials that
have a half integer spin structure,they are called paramagnetic materials.
In a homogeneous magnetic field with this method we can find sharp microwave resonances in a given magnetic field,and the resonance with reference frequency/magnetic field strenght tells,what paramagnetic material is observed.Also this radiation,when it is coherent, gives rise to Maser effect,when in standing wave mode.

One of the paramagnetic materials is magnesium.When we have very pure
magnesium in a homogenous magnetic field,we can have magnesium to
emit coherent microwave radiation.With lot of simultaneously spin precessions in a paramagnetic material, this can lead to spontaneous magnetization.This magnetization is what we need to form the nested cylindrical EM fields to compress planck particle pairs (zero point field ).
MEC systems,that uses only ferromagnetic materials,probably does not radiate to it`s environment.

Planck particle pairs consists of the smallest particles,we can find.
Also Planck particle pairs have a positive and negative charge,and spin gives an magnetic field for PPP.
Now, with a external magnetic field (  nested cylindrical EM fields created by coherent spin precession radiation )we can collect or compress the PPP:s that have magnetic properties.

This locally compressed area of PPP should lead to repulsion from mass.
It is the same system,that in a large scale makes the universe to expand with a increasing speed.

Some thougts about construction of nested cylindrical electro magnetic fields on my web-page

http://www.kolumbus.fi/esa.maunu/

This is only a very short description,but i hope you can find what i mean 

Regards,

Esa