By means of the modification of an electron paramagnetic resonance (EPR) spectrometer, two experimental techniques have been implemented to measure the magnetosensitive non-resonant absorption of microwaves (MANRAM): magnetically modulated microwave absorption spectroscopy (MAMMAS) and low field non-resonant microwave absorption spectroscopy (LFNORMAS). These techniques are proposed to be used in the characterization of magnetic materials at microwave frequencies. They are very sensitive, hence require very little amount of material for test in the form of crystals, glasses, powders, liquids; these wireless techniques are non-destructive. Magnetically modulated microwave absorption spectroscopy is carried out cooling or heating a sample under study in presence of a modulated magnetic field. The temperature of the material is taken and a graph of it versus the modulated absorption of microwaves is constructed. Low field non-resonant microwave absorption spectroscopy measures the magnetosensitive-modulated absorption of microwaves, by the material, with respect to cycled sweepings of an applied dc magnetic field. We present results for the ceramic superconductor YBa 2Cu 3O 7− x (YBCO), the antiferromagnetic (AF) MnO oxide and ferroelectromagnetic Pb(Fe 1/2Nb 1/2)O 3 (PFN). The absorption spectra are shown highlighting their main characteristics.