Question about OpenBTS

GNU Radio
1

Hello,
I want to set up the OpenBTS, and I want to know which board is
better, USRP1 or USRP2? Or any other suggestion? Thank you.

Best regards,
Pan, Luyuan

2

On Sun, Jun 3, 2012 at 9:49 AM, Pan, Luyuan [email protected] wrote:

Hello,
I want to set up the OpenBTS, and I want to know which board is better,
USRP1 or USRP2? Or any other suggestion? Thank you.

Both USRP1 and USRP2 work with OpenBTS and neither can be considered
“better” without describing your requirements. USRP2 / N2xx will
support higher bandwidths with the GigE interface if that is important
to you. USRP1 (or B100) will be cheaper. For stable clocking, the
USRP1 requires hardware modification to support an external 52MHz
clock signal. Other devices can use a more accessible internal or
external 10 MHz reference source.

Also, OpenBTS is not gnuradio, and the openbts-discuss or usrp-users
lists may be better sources for that type of information.

http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

Thomas

3

On 2012/6/4 23:28, Thomas T. wrote:

external 10 MHz reference source.

Also, OpenBTS is not gnuradio, and the openbts-discuss or usrp-users
lists may be better sources for that type of information.

openbts-discuss List Signup and Options
http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

Thomas
Sorry, This may not the proper place to ask question about OpenBTS, But
I just want to ask one more questions. My scenario is : I want to set up
a BTS, scan the user nearby and get their IMSI, then attract them to my
fake BTS and broadcast them a message.

  1. I want to use USRP1 to do the project, Is it enough? (I have both of
    USRP1 and USRP2 at hand)
  2. Is it that SMS-CB a better choice for me? (my ultimate goal is to
    broadcast some messages)
    Thank you for your help!
    –
    Best regards,
    Pan, Luyuan
4

On 6/5/2012 10:01 PM, Pan, Luyuan wrote:

USRP1 requires hardware modification to support an external 52MHz
Sorry, This may not the proper place to ask question about OpenBTS,
But I just want to ask one more questions. My scenario is : I want to
set up a BTS, scan the user nearby and get their IMSI, then attract
them to my fake BTS and broadcast them a message.

  1. I want to use USRP1 to do the project, Is it enough? (I have both
    of USRP1 and USRP2 at hand)
  2. Is it that SMS-CB a better choice for me? (my ultimate goal is to
    broadcast some messages)
    Thank you for your help!

Is it legal to do that?

5

If it’s with his own phones it’s a grey area, for others obviously
it’s not legal. USRP’s can get into a grey area when not used as
“Testing Equipment” pursuant to
47 CFR § 15.121 - Scanning receivers and frequency converters used with scanning receivers. | Electronic Code of Federal Regulations (e-CFR) | US Law | LII / Legal Information Institute .

To answer your question, both USRP1 & 2 can handle the signal, so it’s
up to your preference. SMS-CB would most likely work for simple
messages.

On Tue, Jun 5, 2012 at 2:17 PM, hOWARD wONG