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The goal of this multi-wavelength campaign is to study the flux and spectral evolution of the broad-band emission from radio to GeV (and TeV if the source flares) over a long baseline and over time-scales as short as one day (or hours/minutes). Moreover, a 80 ks XMM-Newton observation of the source is scheduled for 2015 August 23-24. This multifrequency data set will allow us to understand better the underlying physics in 1H 0323+342, as well as in gamma-ray emitting narrow-line Seyfert 1 galaxies.
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