satelite internet

[bruceb58]

Re: satelite internet

Really, when you divide 22 by 186 what do you come up with? My calculator says 0.11xxx seconds. (Just over a tenth of a second.)

First of all, that's the distance if you are at the equator, 2nd of all, that's just the time to the satellite which then relays the info to the ip address that is getting pinged. The total one way latency, from the antenna, to the satellite, to a ground station and then to the receiver. Even if you use your 22K number(which is wrong unless you are at the equator), just the up and down from the satellite is 237mS. That doesn't even take into consideration any of the other latency in the system or atmospheric influences.

If you don't believe me, how about another source:
http://en.wikipedia.org/wiki/Satellite_Internet_access

For an internet packet, that delay is doubled before a reply is received. That is the theoretical minimum. Factoring in other normal delays from network sources gives a typical one-way connection latency of 500–700 ms from the user to the ISP, or about 1,000–1,400 ms latency for the total round-trip time (RTT) back to the user.

That 925ms ping the OP is getting sounds pretty good!

When you run a ping to calculate latency, you are only doing it one direction. If you doubt that go to a command prompt on your PC and type" Ping yourfavoritewebsite.com" and see what is reported back.

:facepalm::facepalm::facepalm: Maybe you should look again...it reports back the round trip latency. Maybe your definition of "RoundTrip Times" is different than mine!

 

[bruceb58]

Re: satelite internet

To the OP, don't worry about the latency number. Its normal. Basically, once the data is in the pipeline, the speed of the packets doesn't care. Think of the latency as the water running through a real long hose compared to a short one. Once the water eventually gets to the end of the hose, the amount of water coming out is the same as a short hose.

A better test than using the speed test sites is to some how download a file of a know size and time the transfer. If you have access to a FTP site that has fast upload speeds, download a 10Mbyte file and time how long it takes. Just remember that there are 8 bits in a byte so a 1Mbyte file is actually 8M bits. Speed is measured in bit rate.

You could have all sorts of problems affecting your speed. Alignment is super critical for satellite internet so if the person doesn't know what he is doing, you are going to have signal problems. Who did the alignment?

 

[Part-time]

Re: satelite internet

Thanks bruce, the guy that instaled it has been out twice and both times it was bang on the money.
Like I said earlier, I already called to disconect so I imagine sometime in the next few days I should start getting I-boat withdrawls...
I'll be moving up river in the spring so I'll see what I can get when I get there.

 

[bruceb58]

Re: satelite internet

Thanks bruce, the guy that instaled it has been out twice and both times it was bang on the money.
Like I said earlier, I already called to disconect so I imagine sometime in the next few days I should start getting I-boat withdrawls...
I'll be moving up river in the spring so I'll see what I can get when I get there.

Ok...good luck.

 

[bruceb58]

Re: satelite internet

You can't measure one way latency anyway unless you inject a timestamp in the packet and have synchronized time clocks on both ends. There are other methods as well but involve the setting up a IEEE 1588 protocol first.

 

[mscher]

Re: satelite internet

We used to have wild blue. Slightly better than having nothing at all, but not much.

1200ms ping times were "good". their satellites nodes were already overloaded with subscribers, so add massive traffic, with the "latency", for speed that would about equal a 9600 baud phone modem.

Plus the download restrictions my family easily and regularly exceeded, which the "thottle", would slow it down even more.

Never so glad to get rid of "high technology" in my entire life.

.

 

[Part-time]

Re: satelite internet

Well... I'm getting my internet fix with a smartphone now.
It's definitely going to take some getting used to.