Typical TNR dipole (PZ-PY) spectrum (black line) and the corresponding dipole spectrum in the HFR frequency range (red line). The HFR spectrum is very variable with frequency. A model of the galactic radio background, as it should be seen by the RPW dipole with the antenna gain factor modeled by Vecchio et al. (2021), is indicated by the blue curve. Given the frequency resolution of the HFR spectrum (192 among the 321 possible frequencies), no measurements are reaching the galactic background for this particular spectrum.