3 ms·

Look at the graph in http://www.arrl.org/files/file/Technology/tis/info/pdf/hbkrf.pdf http://www.arrl.org/files/file/Technology/tis/info/pdf/hbkrf... You can s

Look at the graph in http://www.arrl.org/files/file/Technology/tis/info/pdf/hbkrf.pdf http://www.arrl.org/files/file/Technology/tis/info/pdf/hbkrf... You can see that the worst frequency range is 30 to 300 MHz meaning that range has the lowest acceptable power levels that are considered safe. The entire short article is quite good.

Johnythree 9y ago
But the article explains that is only for Thermal effects, and that there is no correlation with cancer risk. And that any power level below 7 Watt (eg any mobile phone) is completely exempt.