NETWORK OF INTERNET-CONTROLLED HF RECEIVERS FOR IONOSPHERIC RESEARCHES von Koloskov, A. V., Yampolski, Y. M., Zalizovski, A. V., Galushko, V. G., Kascheev, A. S., La Hoz, C., Brekke, A., Beley, V. S., Rietveld, M. T.