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SLOW speeds with Verizon EVDO

 
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Akkaid
EVDO Fledgling


Joined: 17 Mar 2008
Posts: 24

PostPosted: Thu Mar 31, 2011 7:30 am    Post subject: SLOW speeds with Verizon EVDO Reply with quote

All,

I am getting horridly slow DL speeds and have been for two years. I didnt know what kind of speed I should have until I found this forum and I have been happy with what I have. My BEST DL speed is around 65kbs, and that is late at night on a clear day. I am wondering if there is anything I can do to improve this. I know a LITTLE about changing RWIN settings, though I don't know how to find the best window size and the generic 65k something does nothing for me. Some detail about my setup-

Location: 800 Matts Ln, Appling, Ga, 30802
Antenna: Wilson Omni on a 30' pole
Modem: USB 720
Computer: Homemade AMD based system, Windows XP OS
Signal Strength: -65 to -55


Thanks in advance!
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Osage
EVDO Junkie


Joined: 01 Dec 2009
Posts: 530

PostPosted: Thu Mar 31, 2011 11:28 am    Post subject: Reply with quote

To Akkaid,

In a word, 65kb/sec down is slow by any standards, and in MHO, you should be taking any and all trouble shooting steps to understand why.

The first thing I would do is open your VZ access manager software while your computer is connected to the internet and in the lower right it should show your connection. Either its Evdo Rev A or 1xrtt. If its 1xrtt, that would explain your poor speeds, but if its Evdo Rev A, it implies SOMETHING is clearly wrong. But what is that something, the list of suspects are long, and you need to narrow it down or you are just wasting your time barking up too many wrong trees. It could be defects in your computer, it could be a too far distant Verizon tower, an overloaded tower, or maybe not a 3G capable tower, a bad modem or too long a lead in line from the antenna, and I am just starting to scratch the surface of possible causes.

Fortunately the 3G store has an excellent guide on troubleshooting and its, IMHO, the place for you to start.

http://3gstore.com/page/13_will_an_antenna_help_me.html

Read that page and then do a site survey. It would help if you can can borrow a friends lap top if you don't have one, and then take the lap top
and and just your modem on the road to find out where is your closest
Verizon tower. If download speeds radically improve, it rules out your computer, the tower, and your modem as the cause.

The other thing for me to note is that I too use Verizon, my RSSI is usually in the minus mid eighties, yet my download speeds vary between
200-1500 kbits/sec, and most of the time are at 700 kbits/sec plus minus
200. The other thing to note is that I almost always connect Evdo Rev A, but rarely it may slow down to 1xrtt in which case I can slow to about 65 kbits/sec

The last thing to note is that if nothing can improve your Verizon speeds at your location, I would either switch back to cheaper dial up or explore switching to other equally costly 3 or 4 G carriers that might be able to do the job at your location. In my case I explored using Virgin Mobile broadband2go, but when trouble shooting traced Virgin Mobile spotty service as being do to an overloaded local tower, I sadly concluded Virgin Mobile can't do the job for me. But I will not bad mouth Virgin Mobile because it works very well for many other users.
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Matt
3Gstore Employee


Joined: 02 Apr 2008
Posts: 1369

PostPosted: Thu Mar 31, 2011 11:37 am    Post subject: Reply with quote

Osage,

I went to reply and noticed that you've already responded with what I was going to suggest Laughing

I was wondering if he meant 65kB/s which would be the equivalent to 520Kbps down. Actually, either way that would be below the quoted Verizon rate of 600-1.4Mbps.

If it was 65Kbps I'd be willing to be he's connecting to the 1xRtt network.

Akkaid,

Please confirm if you see a National Access icon in the lower left hand corner of VZAccess Manager or a Broadband Rev A logo. According to the map your area is served with 3G, so you should be seeing 3G.
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Osage
EVDO Junkie


Joined: 01 Dec 2009
Posts: 530

PostPosted: Thu Mar 31, 2011 12:10 pm    Post subject: Reply with quote

To Matt,

I too checked the Verizon Access map for Akkaid's location, and it showed solid orange that predicts a stellar connection. But in the case of Verizon, and almost all other 3 and 4 G carrier maps, their coverage areas maps are often wildly over optimistic. And thus poor predictors of actual results in the real world.

But if the maps shows your location is not covered or is very close to areas not covered, then they become more reliable predictors for probable pessimism.

And the other thing to note is such 3 or 4G maps fail to show the exact locations of near by carrier towers. Which leads me to mention one thing I should have mentioned to Akkaid, that if he is line of sight to a distant Verizon tower, a parabolic antenna properly pointed might be a better choice.
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Akkaid
EVDO Fledgling


Joined: 17 Mar 2008
Posts: 24

PostPosted: Thu Mar 31, 2011 12:27 pm    Post subject: Reply with quote

I have my VZ manager set to only connect to Rev A, though it did go into Rev-0 the other day...didnth think that was possible.

I plan to do the site survey. The antenna cable is about 20' long, thats as short as it can be and get LOS to the tower. I do wonder how distance to tower could be the problem if my signal to noise is so good.

Is there a way to see what my RWIN settings should be? A program that can measure that stuff?
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Osage
EVDO Junkie


Joined: 01 Dec 2009
Posts: 530

PostPosted: Thu Mar 31, 2011 1:40 pm    Post subject: Reply with quote

To Akkaid,

On thing that might help is to have cell tower map of Appling, GA.

So I googled that and got, http://www.city-data.com/towers/cell-Appling-Georgia.html

And while the tower location does not allow easy identification of carrier, it looks like the nearest Verizon tower to you may be 10 miles away, which is really getting into only parabolic antenna range.

But you should be able to call some of the closer towers local without fees and see if they any offer 3 G data services.
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Akkaid
EVDO Fledgling


Joined: 17 Mar 2008
Posts: 24

PostPosted: Thu Mar 31, 2011 3:20 pm    Post subject: Reply with quote

How do I call a tower? That's a new one to me.
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Osage
EVDO Junkie


Joined: 01 Dec 2009
Posts: 530

PostPosted: Thu Mar 31, 2011 7:23 pm    Post subject: Reply with quote

Akkaid wrote:
How do I call a tower? That's a new one to me.

-----------------------------------------------------------------------------------
You can scroll down on the link I gave you and find all 37 towers listed in red on a map. You can left click on each tower to get a name and address.
You can scroll down a little more and find email and phone numbers for each of the 37 towers in your area. Plus GPS co-ordinates for each tower. Plus a fcc tower ID number.

Then you can make local calls to the registered owner and find out if they offer any 3G data coverage.

Then if you know the GPS co-ordinates of your house, that and a little trig can get you distance from your house. Or let google earth compute the distance for you.

The closer any 3G tower is to your house, the greater the potential it can deliver some speed. But 10 miles is St. Jude territory.

But that should all come out in the wash as you do a the antenna survey.
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Akkaid
EVDO Fledgling


Joined: 17 Mar 2008
Posts: 24

PostPosted: Mon Apr 25, 2011 1:46 pm    Post subject: Reply with quote

The nearest Antenna I can find is 3 miles away. I am still unable to do a site survey untill I find a laptop.

Is there a way to tell if the problem is my modem? Is the USB720 dated? What kind of 'defects' could be in my computer?

I read about EC/IO, but cannot find any methods of find that number or even what to do when its too low/high.

The only thing I don't have that I heard may help is an Amp.

Almost out of ideas. I did find however that if I skip the Access manager and connect as a dial up I get 100-90kbs. Still not great, but a 30% increase all the same.
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Osage
EVDO Junkie


Joined: 01 Dec 2009
Posts: 530

PostPosted: Mon Apr 25, 2011 3:47 pm    Post subject: Reply with quote

To Akkaid,

As memory serves me when I did your location survey, you may have some towers 3 miles away, the problem was, none of them were Verizon towers.

(1) The Verizon usb720 modem is what I have, it may not be the best available, but when my same Modem does far better than yours, you can't blame just per say the Modem.

(2) Until you can borrow, rent, or other wise get a hold of a mobile lap top, you are just spinning your own wheels?

(3) The other thing that really puzzles me is why you have any brand loyalty to Verizon for totally substandard service? Were I in your boat, I would be looking to equal priced Verizon competitors like ATT&T, Virgin Mobile, Sprint, or T-mobile to see if any of them could do much better. Don't be gullible and just sign up, all carriers offer a no cost trial period.
And in many areas of the country, some non cell phone companies offer Wimax services for about the same price. And then there is gasp the satellite internet option, but slow as they are, they can usually beat 100kbits/sec.

(4) Why have you not called Verizon tech support, at 1-800-922-0204. To see what support they can offer you? It can't hurt and may help. it sure beats doing nothing.
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0day
EVDO Heavy User


Joined: 26 Aug 2009
Posts: 145

PostPosted: Tue Apr 26, 2011 1:35 pm    Post subject: Reply with quote

I have the same speed (50-65 Kb/s) today, however yesterday it was 150 kb/s or more....

For past 2 weeks I haven't been complaining because although every once in a while (couple days a week) I have been having (50-65 Kb/s) but now I have days were it is a normal 150 kb/s or more.

So the good speed is very inconsistent....

I don't think it's throttling, I don't think it's overloaded tower, I don't think it's the weather....

There has to be an explanation to as why I get good speeds sometimes and other days I get dial up speeds.
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burningrave101
EVDO User


Joined: 11 Sep 2008
Posts: 52
Location: Missouri

PostPosted: Wed Apr 27, 2011 2:57 pm    Post subject: Reply with quote

If your signal strength is -55 to -65 RSSI which should be giving you full green bars in VZAccess and you are on RevA then you are connecting to a tower not that far away because without a parabolic grid antennta you aren't going to get a signal anywhere near that if the tower is like 6-10 miles away. You need to be calling Verizon tech support and troubleshooting with them to find out what the problem is instead of trying to figure it out on your own because the issue sounds tower related or your modem is broke.
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