[Openbts-discuss] WBX/DBSRX question

[Paul L. <the...@gm...>]

Hello,

On Thu, Jun 9, 2011 at 8:42 PM, Thomas Tsou <tt...@vt...> wrote:
>> const dboardConfigType dboardConfig = TXA_RXB;
>
> You should be fine. TXA_RXA, using only the WBX, will work too. Single
> board WBX is actually the more common use case.

Okay, I'll give it a try with only Single board WBX, maybe I have more
luck then. So I changed the code to:
const dboardConfigType dboardConfig = TXA_RXA;
sudo lsusrp
USRP 0
 RX d'board A: WBX NG RX
 RX d'board B: <none>
 TX d'board A: WBX NG TX
 TX d'board B: <none>

> Is the phone completely not seeing the BTS or does it find it, but
> fail to connect? What frequency are you operating at and does the
> handset support it? Are you using a transmit antenna and what is the
> transmit attenuation in OpenBTS (type 'power' at the prompt)?

I'm not seeing the BTS at all. Here is an output of the command:
cat openbts-uhd/public-trunk/apps/OpenBTS.config
http://pastebin.com/raw.php?i=VgsBReic

My opinion is that the frequency should be be fine, but yesterday I
listened to a talk where the guy said that it is really important what
is used. Knowing that I'm using my phone in Germany, what would be a
good value? resp. where can I find the information on how to improve
my chances?
output of OpenBTS > power
current downlink power -7 dB wrt full scale
current attenuation bounds 7 to 30 dB

> Any errors in the TRX log?
Here is the output of TRX log (looks good to me):
~/openbts-uhd/public-trunk/apps$ cat test.TRX.out
1307690294.0115 FORCE 3075462864 Logger.cpp:120:gSetLogFile: new log
path test.TRX.out


Output of openbsd26.log:
http://pastebin.com/raw.php?i=xxnrR08H


> If you have access to a spectrum analyzer, you can see if you're
> transmitting at the expected frequency.
Unfortunately I do not own a spectrum analyzer :/

Sorry if I provide you with incomplete information, I'm not en
electrical engineer so I might not provide you with all the info you
need. If so tell me I'll try to do it better next time.

Thanks for your help,
Paul