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Extending large-scale air-shower arrays with radio antennas can increase thedetector's performance, as the radio emission by cosmic-ray air showersprovides an additional measurement of the electromagnetic component.Instrumenting the IceCube surface detector IceTop with radio detectors as wellas with new particle detectors in a hybrid approach will enhance themeasurement and reconstruction accuracy and allow for the characterization ofhighly inclined air showers. This will enable a better understanding of theatmospheric background for the in-ice neutrino measurements. It also opens theopportunity for new science cases, e.g. the search for PeV gamma rays from theGalactic Center, which is visible from the IceCube site year-round at aninclination of 61$^{\circ}$. Adding to several scintillator particle detectorsalready running at the South Pole, two prototype radio antennas have beendeployed at the IceCube site in January 2019 using the same DAQ system as thescintillators. The antennas serve as a test setup for a future deployment ofradio antennas extending the scintillator array planned inside the IceTopfootprint. In this proceeding, the antennas considered for deployment and thehybrid DAQ system processing the signals of the particle and radio detectorswill be introduced. First measurement results at the South Pole will bepresented and future plans for a full hybrid particle and radio detector arrayinside the IceTop footprint will be shown.

First measurements with prototype radio antennas for the IceTop detector array