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Signal Problems

 
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Jbear14
EVDO Newbie


Joined: 14 Aug 2008
Posts: 5

PostPosted: Thu Aug 14, 2008 2:32 pm    Post subject: Signal Problems Reply with quote

Ok I went and picked up my Verizon Wireless USB727 card today...

Where I am sitting with my desktop my cellphone has 2-3 bars of EVDO coverage and no cell phone service

Through my aircard though I either have no service at all or sometimes get enough for it to say connected to Broadband Rev-A but RSSI is above 100 and showing no bars.

I just ordered the 32" Omni External Antenna for it...is this gonna improve my RSSI?? Im hoping so considering my crappy chocolate phone is showing 3 bars of EVDO right now....and i am having to type this on my old dial up service >:O
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Jbear14
EVDO Newbie


Joined: 14 Aug 2008
Posts: 5

PostPosted: Thu Aug 14, 2008 2:33 pm    Post subject: Reply with quote

Also, the service is very jumpy.....even on my phone.

Antenna help with this as well?
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reggie14
EVDO Newbie


Joined: 09 Aug 2008
Posts: 7

PostPosted: Thu Aug 14, 2008 3:06 pm    Post subject: Reply with quote

It's hard to say what's going to happen in your situation, but in general I think the wilson antenna only drops the RSSI by 6-10db. Antenna place is key, though. Getting it up above obstacles that might be impairing the signal is important, and might drop your RSSI numbers quite a bit. What kind of signal strength do you get outside your house? Maybe just mounting the antenna on your roof would help matters greatly.

Do you know how close the nearest EVDO towers are? In my case, I saw my RSSI numbers jumping around all over the place in the -85-110db range because my modem kept trying to connect to different towers. Another thing that could be going on, if your tower is in a busy area, is that the tower is decreasing it's service area at peak hours so it doesn't get overloaded.

I strongly suspect you're going to have a difficult time getting reliable service without an amplifier. If you have line-of-sight to a EVDO tower a yagi antenna would probably be preferable to the omni-directional antenna.
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Jim_in_VA
EVDO Junkie


Joined: 09 Apr 2007
Posts: 560
Location: On the Chesapeake Bay, Virginia

PostPosted: Thu Aug 14, 2008 3:08 pm    Post subject: Reply with quote

Might help your modem, It won't help your phone unless you have a separate external antenna for that as well. If you have a USB extension cord try that with your modem and get it in a position to improve signal.
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Jbear14
EVDO Newbie


Joined: 14 Aug 2008
Posts: 5

PostPosted: Thu Aug 14, 2008 3:10 pm    Post subject: Reply with quote

isnt there a way to make it where it stops switching antennas? And i tried searching for the nearest antennas but they all have wierd company names and I dont know how to tell which is which.......

How would an amplifierhelp my situation? I am very new to all of this so consider me pure noob lol

I am only using it for gaming so all i want is a constant, decent ping.....could care less about DL speed =)
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Alex
Site Admin


Joined: 19 Sep 2006
Posts: 2309
Location: Dallas, TX

PostPosted: Thu Aug 14, 2008 3:16 pm    Post subject: Reply with quote

Jbear14 wrote:
I am only using it for gaming so all i want is a constant, decent ping.....could care less about DL speed =)

the majority of EVDO connection latency is caused by network between tower and the game servers, not between EVDO device and cell tower.

drive to the tower and test latency, you'll see it doesn't much matter how much you improve signal.

whatever you get while AT the tower, is as good as its going to get.

EVDO latency is inconsistent. it varies from tower to tower
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Jbear14
EVDO Newbie


Joined: 14 Aug 2008
Posts: 5

PostPosted: Thu Aug 14, 2008 3:20 pm    Post subject: Reply with quote

well my latency right now hops around like crazy, lowest being at 231 ms on WoW jumping to 2500........and im noticing on my VZAccess Manager that it keeps switching from Broadband Access too National Access, or Rev-A to 1Xtt........could that be the problem and is there anyway to make it stop doing that?
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Alex
Site Admin


Joined: 19 Sep 2006
Posts: 2309
Location: Dallas, TX

PostPosted: Thu Aug 14, 2008 3:25 pm    Post subject: Reply with quote

do some legwork. answer the questions at end of this article:

http://www.EVDOinfo.com/RSSI

pay attention to what RSSI is for both 1xRTT and EVDO

you need strong enough signal to EVDO to maintain that connection.
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Jbear14
EVDO Newbie


Joined: 14 Aug 2008
Posts: 5

PostPosted: Thu Aug 14, 2008 3:30 pm    Post subject: Reply with quote

My RSSI for both evdo and 1xrr is 100+, maybe everyonce in awhile dropping to the high 90s.....

Some of those questions i cant answer because I am on a desktop and can not go out driving to find out the RSSI.....perhaps i can find a laptop to borrow or something
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reggie14
EVDO Newbie


Joined: 09 Aug 2008
Posts: 7

PostPosted: Fri Aug 15, 2008 1:05 am    Post subject: Reply with quote

If you call up Verizon they'll probably tell you what towers are nearby. It might take a couple tries though. Apparently some of the customer service reps are trained to not give that information out, while others are perfectly happy to give it out. At least, that's how both Alltel and Sprint worked. I've never had Verizon, so I don't know what they do.

Can you tell us anything else about your house and the area around your house? Your desktop isn't in a basement, is it? It is near a window? What's your house made out of (brick, wood with vinyl siding, etc)? Do you have a lot of large trees around your house?

But, I think for any of us to be much help you'll need to do what Alex asked you to do. I'm particularly interested in what your signal strength is right outside your house. If it's still around -100db I think it would take a serious (and expensive) effort to give it working reliably.
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onedavester
EVDO Heavy User


Joined: 26 Jul 2008
Posts: 130
Location: Upstate NY

PostPosted: Fri Aug 15, 2008 11:08 am    Post subject: Reply with quote

How can he have such a strong EVDO signal on his cell with no antenna in the same location he is getting a lousy EVDO signal on his aircard?
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Capt.Dan
EVDO Junkie


Joined: 04 Jul 2006
Posts: 176
Location: Arizona

PostPosted: Fri Aug 15, 2008 1:18 pm    Post subject: Reply with quote

onedavester wrote:
How can he have such a strong EVDO signal on his cell with no antenna in the same location he is getting a lousy EVDO signal on his aircard?


Cells are on one tower and the Air-card is on another. I know some towers will handle Cell phones but no Air-card service. I found that out in W.Va. I would think that it would work the other way around too! Rolling Eyes
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