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Keys
EVDO Newbie


Joined: 07 Aug 2007
Posts: 6

PostPosted: Sat Mar 29, 2014 9:03 am    Post subject: Guru's Needed Reply with quote

I have a MBR1400 (firmware 5.1)and UML 290 (Verizon) on a motor coach sitting in Las Vegas. All firmware is up to date. The UML 290 is connected via a Wilson antenna on the roof. 100% signal -39db to EVDO A. On speed test, the connection download averages .43Mbs and 1.98Mbs Up. Ping averages 150ms. I try to force LTE, but it will not connect.

All said, I sit in the inside of the coach with my iPad or iphone and get LTE with speed tests in excess of 8Mbs download and 6Mbs up with a ping of 49ms

I have messed with the setting on the MBR1400 and nothing seems to help. Tower loads are very funky, but even if I run test simultaneously, I get the wildly different speeds. When I wifi connect the iPad or iPhone to the MBR1400 with the 290, the speeds drop to the slow speeds I get with a connected laptop through the MBR1400.

Lastly, I checked the UML 290 in a laptop with it connected through the USB port and I saw a very minor improvement.

So, it seems like I need a guru or two to help figure this out.

Thanks for any help. Bob
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torreyclark38643
EVDO User


Joined: 22 Mar 2014
Posts: 44

PostPosted: Sat Mar 29, 2014 9:33 am    Post subject: Reply with quote

Did you force it to LTE in the router or using the VZ Access Manager software?
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Keys
EVDO Newbie


Joined: 07 Aug 2007
Posts: 6

PostPosted: Sat Mar 29, 2014 9:42 am    Post subject: Reply with quote

Hi,

I forced LTE through the router using the modem setting in the edit portion of the connections manager.

eHRPD is enabled and Aux antenna is enabled

Bob
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dmc271
EVDO Heavy User


Joined: 31 Jan 2011
Posts: 115
Location: Oklahoma, USA

PostPosted: Sat Mar 29, 2014 10:27 am    Post subject: Reply with quote

Bob: Plug your UML290 in your computer and use VZ Access Manager (VZAM) see what Mode the modem is set to. In VZAM, press Ctrl+D, and then enter diagvzw for the password. What do you see?

You can also try the Pantech tool to view/edit the mode: http://bcbj.org/uml290/UML290PMTool_v1.0.0.2.exe

Also try with and without your external antenna.
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torreyclark38643
EVDO User


Joined: 22 Mar 2014
Posts: 44

PostPosted: Sat Mar 29, 2014 4:13 pm    Post subject: Reply with quote

dmc271 wrote:
Bob: Plug your UML290 in your computer and use VZ Access Manager (VZAM) see what Mode the modem is set to. In VZAM, press Ctrl+D, and then enter diagvzw for the password. What do you see?

You can also try the Pantech tool to view/edit the mode: http://bcbj.org/uml290/UML290PMTool_v1.0.0.2.exe

Also try with and without your external antenna.


That's exactly why I was asking if you had done it in the router or in VZAM, because if you use VZAM it changes the setting on the UML290 itself forcing it to connect to LTE no matter which device you have it plugged in to.
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Keys
EVDO Newbie


Joined: 07 Aug 2007
Posts: 6

PostPosted: Sun Mar 30, 2014 8:13 am    Post subject: Update Reply with quote

Thanks for all the suggestions. Here is an update with some strange twists.


    Did a hard reset
    I hooked the 290 to my desktop and with VZM got LTE immediately without antenna. Checked the connection and it was ticked Global. Went ahead and forced LTE.
    Put the modem back into the MBR1400 and it would not connect at all. Changed the setting back to auto/global and it connected at EVDO-A


I decided to try remoting the UML290 via a 1 meter USB extension cable and got it away from the MBR1400. I immediately got LTE and a huge speed increase. It jumped from ~.50 Mbs to 11Mbs down and the latency went from ~125ms to 54ms. Upload increased as well.

I then put the modem into my Surf400 without the cable and it stayed on LTE, but not as fast. I then used the USB extension and the speed went back up to the same as the MBR1400.

I then attached the antenna with the USB extension and the reception went from ~85% to 100% and the db dropped from -80db to -60db

So, it seems to me that the wifi on the MBR1400 is somehow interfering with the UML290. Seems like the same issue for the Surf400, but not as big of a loss. I am going to reroute the antenna cable and get the modem as far away from the MBR1400 as possible. Because this setup is on a motor coach, I am going to see if I can get some metal between the modem and the router.

Curious of what you all think. It almost seems like I have found a weak link in the MBR1400 or at least wifi interference with the UML290. Isolation seems to be the key.

Bob
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torreyclark38643
EVDO User


Joined: 22 Mar 2014
Posts: 44

PostPosted: Sun Mar 30, 2014 9:33 am    Post subject: Reply with quote

That's very interesting Keys! Another user saw the exact same issue with AT&T's LTE on the MBR1400. It'd odd because the MBR1400 uses the 2.4GHZ (2400 Mhz) frequency for WiFi and Verizon & ATT use 700-800Mhz for LTE so there really shouldn't be any interference...strange.

Just to see how much of an interference there is...try going into the routers admin page and disable WiFi, connect via ethernet cable and do a speed test to see how it compares with WiFi broadcast turned off. I'd be interested to see if it improves even more!

Sounds like an issue Cradlepoint should be looking into because the two frequencies are very far apart and shouldn't be interfering with each other. It also seems to be a problem with just the MBR1400 lately too.
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Keys
EVDO Newbie


Joined: 07 Aug 2007
Posts: 6

PostPosted: Sun Mar 30, 2014 10:30 am    Post subject: Reply with quote

torreyclark38643 wrote:


Just to see how much of an interference there is...try going into the routers admin page and disable WiFi, connect via ethernet cable and do a speed test to see how it compares with WiFi broadcast turned off. I'd be interested to see if it improves even more!


I did what you suggested. I put the modem in the 1400. Saw the latency drop from ~62ms to 183ms. I turned off the wifi radio and the latency went down to 65ms. I did speed tests and there was a lower speed down with the wifi radio on. I did the same test with the 1 meter USB extension and there was no difference with the wifi radio on or off.

The caveat is that I am in Las Vegas and the tower loads change every time an airplanes lands Laughing

This does not seem to be a fluke, so I am going to get the modem as far away from the router as I can. I am going to head to Fry's here and see if I can get a super clean USB extension cable.

BTW, The antenna connection does help. I do not see much difference between the antenna I have connected with or without the Wilson amp inline.

I also did run a simultaneous speed test with my iPad direct on Verizon and the 1400 with modem. They were pretty much identical in all three test perameters. This is another indication to me that remoting the modem makes a difference. When I did a simultaneous test before, there was a huge difference with the iPad on LTE and the 1400 registering EVDO-A

Bob
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evdovalerie
3Gstore Employee


Joined: 02 Feb 2012
Posts: 134

PostPosted: Mon Mar 31, 2014 2:02 pm    Post subject: Reply with quote

The need for a USB extension cable to separate the modem from the router to minimize interference has been around since the 4G modems came out. Cradlepoint has released several firmware updates since then as well, so I'm not sure when/if there will ever be a resolution in a future firmware release. We'll just have to cross our fingers for that one.

Just be careful about the USB extension cable length because anything longer than 10ft will need to be a powered USB cable.
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Keys
EVDO Newbie


Joined: 07 Aug 2007
Posts: 6

PostPosted: Mon Mar 31, 2014 2:10 pm    Post subject: Reply with quote

Thanks Valerie.

I thought it was strange that when I plugged the modem into my workstation that is buried in the metal cage of the motor coach that I got LTE. I initially used a 1 meter cheapy USB extension to see if it helped. When it did, I ran to Fry's and bought a 2 meter USB3 gold tipped extension. It may not be necessary, but I figured while I was at it I might as well go for the gold.

Since remoting the modem, I am maintaining speeds and LTE. Now if I could fix the tower load issues when the gamblers arrive Wink

Bob
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