First impressions on ure mywireless

Last time i checked radio waves travelled at the speed of sound ??? Plus, you have to calculate that his tower may only be 4km but from brixton to the data centre is considerably further.

Hopefuly me being very close to the data centre will make a considerable difference in ping times.
 
Well this is what I found Silver:P

"all electromagnetic waves, travel at the speed of light"

hehe looked it up :P

Regards
Cerberus
 
Ok, dont call me stupid... I havent done that to any of you,
but then howcome with Television, someone 20 kilometers away are a couple of seconds behind ? Mountains definitly give interference, even though I dont think that's the case with sentech, and well, I geuss it's maybe because TV doesnt use micro waves ? hehe
Someone elaborate with some nice scientific stuff ;) I'm bored wating for my application to be approved
 
TV also uses "microwave" or rather electromagnetic waves.
I seriously dought someone 20km further would be a few seconds behind. It could be they are receiving from a different transmitter which might have been relayed from another one.

If Sentech has one main tower and then relays (or hops) a signal from tower to tower to the data centre, then it might affect ping times I suppose. But they would be stupid to set up the network like that.

ProAsm, anything on that?

Ajax
 
Well, the different relays might make sense. But phone someone sometime ;) The phone line seems to work about at the speed of sound, hehe, but I do remember once talking to someone, and listening to quite a huge difference in time. Also, out of interist.
I had 2 tv's. one connected to arial, other to those crazy looking bunny ears, and there was also a delay. Could that be the cause of signal strength ? ( I know this is not the sabc forum, so you can ignore me if you really want to ;)
 
Do me a favour please - could you ping www.camelot-europe.com - quite keen to see what sort of impact the satilite has on International stuff :)
 
The wirelesss technology works similar to ADSL as far as the syncs go, and this is why some people call it Wireless ADSL.
Like ADSL which is Distance Dependant, so is Wireless technology.
Basically ADSL only travels 8 km on a copper wire, regardless of how thick or what quality the copper wire is.
Same goes with the Wireless Technology, it is distance dependant and that is a maximum of 5.7 km regardless of how good your signal is, how big your antenna is or how much power the transmitter is putting out.
However, signal quality in terms of Signal to Noise ratio will make a difference.

For example, it is quite feasible for a person living 3 km from a tower to be receiving the exact same signal strength and quality as the person living 5 km from the tower, but the chances are the person who is 3 km away will get say an 80 ping with 1% packet loss, whereas the guy 5 km away could expect maybe a 120 ping with 10% packet loss.
Note: This is only an example and not stated on any factual findings.
 
TV picture/sound, be it from the Roof Antenna or Bunny Ears will be perfectly in sync unless you are tuned into different frequencies (eg. Channel 9 and 12)

In most wireless technologies, the response time is dependant on your modulation techniques. If it takes long for the modem to convert the radio wave to digital signal and back, then your ping time will suffer. There's alot of overhead.
I'd like to see what the ping time is if you stand right next to the tower...anyone got a laptop and MyWireless ? :D

I've heard rumours of people on MyWireless getting 50ms pings.

Personally, I'm not too worried about ping times on MyWireless, if I wanna play a game, I'll dialup my ISDN and get a nice 30ms ping :)

My application form is printed and ready for faxing, just have to wait till "Q1 2004" to get a good signal which I'm hoping is very soon :D





--
 
If radio wave moves at the speed of sound then it will take forever to talk to the rovers on mars. And a Fighter plane will fly him self out of radio contact and his radar will lock on on himself[:D]

I say Lets burn them
 
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Noag</i>
<br />If radio wave moves at the speed of sound then it will take forever to talk to the rovers on mars. And a Fighter plane will fly him self out of radio contact and his radar will lock on on himself[:D]

I say Lets burn them
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

haha, I dont know what to say
 
The Speed of electromagnetic waves (and light) travels at the speed of 1 over the squareroot of mu and epsilon. Mu and epsilon are properties of te magnetic and electrostatic properties of the waves respectively. In a perfect vacuum, the speed of light is at an optimum. When you enter an atmosphere its properties change and the speed is slower. When you travel through electromagnetic cables it is much slower. Apparently the first telegraphs were so slow that you could almost outrace a telegram by horse. Today, due to improvements these speeds are closer to speed of light in vacuum but still slow. You will expect delays when you travel distance. In sattelite comms, you will expect to have huge delays due to the distance and due to conversion and also due to buffering. When the incoming data volume is higher than the rate that the outgoing pipe can handle, this gets buffered and are only send when a space becomes available. This does cause delays. It is annoying in speech and I suppose when you are a gamer. When you are an information hunter, it hardly matters.

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| Christiaan |
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Wireless technology is not neccesarily distance dependant for the same reason that ADSL is. Wireless technology such as 3G uses smaller cells than say GSM so that they don't have to carry so many subscribers at any one time as the bigger cells and therefore they can handle a much larger bandwidth per subscriber. The idea is thereofore to have many more base stations but all of shorter range than in the GSM case. The antennas on 3G technology is also selective and can sweep onto a specific subscriber and ignore anothers incoming signal. In this way more subscribers can be handled by putting more antennas and by selecting from subscribers that uses the same frequency to avoid clashes.

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| Christiaan |
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What happened to a provider being announced at launch that would offer MyWireless contract-free and a once-off fee for the modem?
 
That ping time of 90ms is not great. I started on 56K and had pings of 140ms. Then moved to 64k and got down to around 80ms. That download speed of 16 Kilobytes is right for 128Kilobits due to the way they measure things. Its the old story, a kilobyte is 8 times the size of a kilobit.So roughly as folows;
56Kilobits modem, download speed 6Kilobytes per sec
64K -----------------------------8K
128K ----------------------------16K
512K ----------------------------64K
Of course these speeds are only achieved under perfect conditions.
I have ADSL now and have reached max 56Kilobytes on download from international, only when uncapped of course and that translates to about 440Kilobits per sec. Quite far from the advertised 512k connection we are supposed to have.
The other thing that somebody else mentioned was that there internal Isdn modem was better than external. That is true, I dropped my ping on local servers from 80ms to 40ms.
Cerberus reckons that 100ms is ok. I doubt it. In 100ms you die about 6 metres back from where you thought you really were.
Now I have a ping of 20ms and sometimes I think that because I am updating the server so quickly, the guy with a 80ms ping time can see me before I can see him, because he only tells me where he is every 80ms. Never can win can you.
For me, my priority is ping time for gaming. Anything under 50ms would be ok. As far as download speeds go, I could possible live with 16Kb . Although once you have tasted the speed of adsl, it is a very difficult thing to give up. Really my 55Kb download is nearly four times what that guy was getting. What was he getting so excited about. Remember that software is growing bigger, not smaller. We need speed to make things happen on the Internet. That's why we cry so damn much when they cap us. Telkom takes us from our new Porsche, and keeps throwing us back into the old ox wagon. What do they want us to do, drag wires behind us wherever we go, so they can yank us back into there lager if we should happen to stray.
Will somebody else with "My Wireless" give us some more ping times for local servers. PLEASE.
 
As requested by LordZorg:
Pinging www.camelot-europe.com [193.252.123.35] with 32 bytes of data:

Reply from 193.252.123.35: bytes=32 time=410ms TTL=107
Reply from 193.252.123.35: bytes=32 time=423ms TTL=107
Reply from 193.252.123.35: bytes=32 time=413ms TTL=107
Reply from 193.252.123.35: bytes=32 time=444ms TTL=107

Ping statistics for 193.252.123.35:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 410ms, Maximum = 444ms, Average = 422ms
-
and a repeat of x2 Mweb pings:
Pinging kalahari.mweb.co.za [196.2.33.21] with 32 bytes of data:

Reply from 196.2.33.21: bytes=32 time=95ms TTL=119
Reply from 196.2.33.21: bytes=32 time=91ms TTL=119
Reply from 196.2.33.21: bytes=32 time=104ms TTL=119
Reply from 196.2.33.21: bytes=32 time=78ms TTL=119

Ping statistics for 196.2.33.21:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 78ms, Maximum = 104ms, Average = 92ms
--
and
Pinging karoo.mweb.co.za [196.2.128.100] with 32 bytes of data:

Reply from 196.2.128.100: bytes=32 time=113ms TTL=116
Reply from 196.2.128.100: bytes=32 time=108ms TTL=116
Reply from 196.2.128.100: bytes=32 time=138ms TTL=116
Reply from 196.2.128.100: bytes=32 time=109ms TTL=116

Ping statistics for 196.2.128.100:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 108ms, Maximum = 138ms, Average = 117ms
-
 
Heya

the local pings for gaming arnt that great.. but considering theres 0 packet loss its kewl. I ordered the 256k package so i hope the pings are decent. Concerning pings, if i get a patch antenna will it improve pings alot ?

Dr4k out
 
Perdition:

Sentech's MyWireless traffic does not traverse satellite channels. It goes via I.S.'s fibre circuits. Sentech gets their connectivity from IS as an upstream.

--deckert
 
I know, but the downstream is satellite (unless something has changed) and 430ms for the entire trip is excellent.
 
Hi,

Both upstream and downstream go via IS. Traceroutes outbound and inbound show traffic traversing the IS core infrastructure.

--deckert
 
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