Thanks Mitch I think we can close this thread as I cant find any light at the end of the rainbow.
73 Bill W4RM From: Mitch Wolfson, DJØQN / K7DX [mailto:dj...@gmx.net] Sent: Thursday, December 22, 2016 6:26 PM To: Bill OMara <w...@aol.com>; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 remote over satellite internet? Bill, There are no good news stories on using RemoteRig over satellite. A couple of people have been on the RemoteRig Forum where things like this are discussed at http://www.remoterig.com/forum/index.php and had tried in vain to get it to work. As Joe wrote, the latency is too high to make it work. To put it more in numbers, the speed of light is (only) 300,000 km/s and the geosynchronous satellites are in orbit at 40,000 km. Therefore, for the double round trip that is necessary for the packets, you have a trip of 160,000 km. This gives you a latency of 533 ms. Then you need to add on the normal ground latency that comes on top of this in the 200 ms range, giving you a delay of about three-quarters of one second! Things get difficult for SSB once you hit about 200 ms, so this just will not work due to physics. 73, Mitch DJ0QN / K7DX Mitch Wolfson DJØQN / K7DX 10285 Boca Cir, Naples, FL 34109 Skype: mitchwo USA: Home:+1-239-221-9600 - Mobile:+1-424-288-9171 Germany: Home:+49 89 32152700 - Mobile:+49 172 8374436 On 22.12.2016 17:56, Bill OMara via Elecraft wrote: Jim and others, I agree with everything that everyone has said..... That's why I was asking about a good news story? Has anyone tried it? Any real first hand reports? The specs don't always tell the truth, but most of the time they do! 73 Bill W4RM -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown Sent: Thursday, December 22, 2016 5:43 PM To: elecraft@mailman.qth.net <mailto:elecraft@mailman.qth.net> Subject: Re: [Elecraft] K3 remote over satellite internet? On Thu,12/22/2016 1:37 PM, Bill OMara via Elecraft wrote: Does anyone have any good new story's in running a k3 remoterig set-up over a satellite internet system? Hughes Net, Exede or others There are at least two issues. The most obvious is latency -- how much "turn around" time are you able to tolerate? You've got to make the round trip up and back to the bird, and that's in addition to digital encoding latency. The second issue is bandwidth. I've heard that satellite systems aren't exactly speedy. :) 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to w...@aol.com <mailto:w...@aol.com> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to dj...@arrl.net <mailto:dj...@arrl.net> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
