  Synchrotron diffuse radiation (SDR) emission is one of the major Galactic
components, in the 100 MHz up to 100 GHz frequency range. Its spectrum and sky
map provide valuable measure of the galactic cosmic ray electrons (GCRE) in the
relevant energy range, as well as of the strength and structure of the Galactic
magnetic fields (GMF), both regular and random ones. This emission is an
astrophysical sky foreground for the study of the Cosmic Microwave Background
(CMB), and the extragalactic microwave measurements, and it needs to be
modelled as better as possible. In this regard, in order to get an accurate
description of the SDR in the Galaxy, we use - for the first time in this
context - 3-dimensional GCRE models obtained by running the DRAGON code. This
allows us to account for a realistic spiral arm pattern of the source
distribution, demanded to get a self-consistent treatment of all relevant
energy losses influencing the final synchrotron spectrum.
