(i) Gauribidanur RAdioheliograPH (GRAPH) GRAPH is a two-dimensional radio interferometric array dedicated to image the solar corona in the frequency range 40 – 150 MHz.
(ii) Gauribidanur Radio Interferometric Polarimeter (GRIP) GRIP is a one-dimensional radio interferometer system built by IIA to observe the polarized radio flux from the whole Sun simultanesously at many frequencies in the frequency range 40 – 150 MHz.
(iii) Gauribidanur LOw frequency Solar Spectrograph (GLOSS)
(iv) Gauribidanur RAdio Spectro Polarimeter (GRASP) GRASP antenna system is designed to observe the polarization properties of the non-thermal radio emission from the solar corona over the frequency range 50 – 500 MHz. It can produce both Stokes-I and Stokes-V spectra simultaneously.