WELL THAT HOW THEY DO IT WITH LIGHTNING BUT RADIO WAVES BOUNCE AROUND A BIT YOU KNOW LONG PATH , NVIS ALSO I THINK THERE MIGHT BE SOUNDCARD PROCESSING TIME ECT UNLESS YOU ARE THINKING ABOUT TRYING TO DETECT AT THE IF STAGE YES IT MIGHT BE MAY BE TOO MUCH AT LEAST WITH OUR STANDARD SSB RADIOS AND COMPUTERS GOOD TRY DAVID KF4WBS / NNN0LES From: Darko_9A3LI Sent: Monday, February 20, 2012 04:53 To: pskmail@xxxxxxxxxxxxx Subject: [pskmail] Re: Hackers? Well, not connection timeing, every server must have GPS receiver in that case, GPS time of detecting signal sending to one "main server" who calculate location from inforamtion collected from all other "pskmail" servers. If "trigger" time diference is more than 0.x seconds (uS, nS, something) than signal isnt from the same source. Main problem is detecting "trigger" and add to it precise time tag (gps) or how to do that. That can be nice challenge for programmers but very useful (maybe) for clients without gps and correct entered location to pskmail client. But maybe Im asking too much ! :) 73! Darko 9A3LI On Mon, Feb 20, 2012 at 9:37 AM, Rein Couperus <rein@xxxxxxxxxxxx> wrote: Interesting idea Darko, PSKMAIL RADAR.... I think our TCP internet connection timing is not precise enough for light speed radio..... Glad the server is back, I need it often from here... Rein EA/PA0R/M