The NCBJ team had proposed to use Cherenkov detectors equipped with diamond radiators for measurements of Runaway Electron beams within the Magnetic Confinement Facilities of the tokamak type many years ago. The main idea was the application of a Cherenkov Effect for measurements of electron-beams in the energy range of up to a few hundreds of keVs. Such a probe, being a direct detector of fast electrons escaping from tokamak plasma, could be used as an additional diagnostics of localized RE-beams, complementary to routinely used systems, based on hard X-ray detection. The diamond crystals were selected due to high refractive index and high thermal conductivity, which allowed to record Runaway Electrons with energies above 51 keV and, simultaneously, helped to keep radiators` temperatures at safe level. The RE beam signals recorded by Cherenkov probe usually occurs during current ramp-up and disruption phase. During RT-03 campaigns in 2024 we have observed an interesting periodic signals also in the middle of the discharge, which shows correlation with MGI and hard X-ray diagnostics. Such kind of signals were previously observed in other facilities, like COMPASS and Tore Supra, but was not previously present on TCV. The work shows overview of the signals recorded with Cherenkov probe, and their comparison with other diagnostics, particularly hard- and soft X-ray ones.