Ionogram Pruhonice in operation again

Very good news came from the neighboring Czech Republic – the ionogram from Průhonice is again available at http://147.231.47.3/latestFrames.htm. With the help of an ionogram, it is possible to determine the conditions for the propagation of short waves over short distances. It is a useful aid for experimenters with small performances and also for competitors in domestic races such as SSB Liga, OM Activity Contest Cooling air can be up to seven times more efficient than radiant cooling.