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1xRTT max dl/up speed

 
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barney
EVDO Fledgling


Joined: 22 Mar 2007
Posts: 24

PostPosted: Sat Mar 24, 2007 9:09 am    Post subject: 1xRTT max dl/up speed Reply with quote

I wanted to find out if anyone can comment on this subject of telling me the max dn load/up load speeds that are possible in a 1xRtt location. I am "a newbie" on a trial of a sprint u720 usb and too far from a rev0 area.(50mi north). Nearest tower is 3 miles to south but offers only 1xRTT as far as I can tell.
I have my u720 hooked up to a Wilson Omni antenna.
Running win xp on my hp laptop with the usb y-cable.
My current specs right now are:
-96 dbi to –85 dbi on 1xRTT according to the Sprint connection manager.
50 – 120 download and 57 to 102 up.

Will an amp increase my dn/up load speeds or is this the max for me in this geographically challenged area of southern Or?

The guys at the 3GStore were excellent with the information they supplied me when I inquired about an amp.
Thanks to the moderators of this great site for excellent information and all who contribute. Smile
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Fox McCloud
EVDO Junkie


Joined: 02 Dec 2006
Posts: 618

PostPosted: Sat Mar 24, 2007 10:03 am    Post subject: Reply with quote

the max download and upload is 144k (or 18KB/s). Can this be reached? I'm not really sure, but, I would suspect you could get better speeds if you used a different antenna (such as a yagi antenna pointed directly at the tower). Also, if you wanted to totally blast your signal to the tower, you could use a yagi and a inline amplifier.

-85 to -91 dBi isn't really that great of signal; it's not terrible, but not apparently good, either; thus, why I think you could get better download and upload speeds.
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Michael
Site Admin


Joined: 13 Jan 2005
Posts: 6208
Location: Cary, IL

PostPosted: Sat Mar 24, 2007 3:37 pm    Post subject: Reply with quote

On 1xRTT, the average upload & download is 50Kbps - 100Kbps. With a great signal and other factors in your favor, you could average 115Kbps - 120Kbps.

Your signal isn't the greatest, but as Fox said, isn't terrible either.

Will an Amp help, yes. However, the limits of 1xRTT is going to be the factor here. If you would like to consistently get speeds on the higher end of your ranges, then the amplifier will help.
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JoeyDee
EVDO Fledgling


Joined: 01 Jan 2007
Posts: 19
Location: New York

PostPosted: Sun Mar 25, 2007 10:24 am    Post subject: Reply with quote

At my house, I get -85 through -95db with my u720 and a YAGI, my download speed is a steady 15KB/s, i've never sustained 18KB/s before, if you're getting 15KB/s right now, its not worth spending extra money on a technology that maxes out at 17-18KB/s

Latency is the killer for 1xRTT, not the speed. 15KB/s is plenty fast for most websites, but taking 1 second to get a response for each data request (your browser telling the website it needs image a, then image b, then image c for example) takes up most the time. EVDOs 150-300ms latency gives it the biggest advantage, not just the huge speed difference.

This is why in some cases a dial up connection of 48kbps might seem "faster" at loading webpages than a 120kbps 1xRTT connection.
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buckron
EVDO Fledgling


Joined: 10 Mar 2008
Posts: 18

PostPosted: Sun Mar 23, 2008 5:44 pm    Post subject: Hmmmm Confused Reply with quote

I thought 1XRTT was not a big deal with latency and that satellite internet was...I am just new to this also with a laptop and a U720. Just with the little antenna in the window i am pretty steady at approx 80kbps sometimes 100kbps,I am going to invest in a yagi and amp and hope for the best ..if i can not hit the EVDO i will return the equipment and take the loss on the shipping.I have read so much about antennas and boosters that i dont know what to believe regarding distance to EVDO tower.Going to try a 20 mile shot and will report back..some people say 6miles and others say 80..I hope i can say 20 NP !![/b]
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AZDude
EVDO User


Joined: 17 Mar 2008
Posts: 72
Location: Tempe, Arizona

PostPosted: Mon Mar 24, 2008 12:26 pm    Post subject: Reply with quote

Fox McCloud wrote:
the max download and upload is 144k (or 18KB/s). Can this be reached?


I've gotten 17KB/s before on the 1xRTT. Not all the time but I have for an entire download before (something like a 10MB file).
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3Gstore1
3Gstore Employee


Joined: 09 May 2007
Posts: 818
Location: USA

PostPosted: Mon Mar 24, 2008 12:33 pm    Post subject: Reply with quote

AZDude wrote:
Fox McCloud wrote:
the max download and upload is 144k (or 18KB/s). Can this be reached?


I've gotten 17KB/s before on the 1xRTT. Not all the time but I have for an entire download before (something like a 10MB file).


With an RSSI of -70 to -75 my download speed ranged from 12KB to 14KB/sec. I don't think I've seen this go over 15KB/sec consistently.
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