I thought you needed to be able to dial up the right frequency, so you know exactly where you are supposed to be going to....Or for example, you could end up on the Western Front during World War 1, facing the German machine gunners that are firing at the soldiers and you charging towards them ....BTW, imho the HDR cannot transport anything through time and space..it is all electricity magnetism and the relationship thereof.. dial to the frequency and you WILL be anywhere in "time"
it is what it is.. no one would be on this site if they did not 100% believe this is what it is .. and it IS!