The past decade and a half have been the golden era of experimental radio astronomy. The need for precision measurements of 21cm cosmology has triggered the development of unusual methods and techniques of radio observations, especially at low frequencies. Single dish experiments and technology demonstrator arrays for large future experiments like the SKA, HERA are breeding grounds for low-cost configurable radio telescopes. They can target a small number of high-impact observations and probe the science priority areas for the large observatories like the future Square Kilometer Arrays. 
 

In this talk, I will briefly discuss the precision technology development for global 21cm observation and its contribution to the field of power spectrum measurements - a science priority area of the SKA. I will also discuss how the technology development of 21cm power spectrum measurement enables global 21cm detection corroboration. I will then discuss how technology demonstrators of future large observatories are paving the pathways for new experiments with targeted science goals. Finally, I will further discuss a plan to build up a SKA-Low demonstrator array for deep learning of radio astronomy instrumentation and house several experiments with multifarious science goals.