Re: [Discuss-gnuradio] Question about OpenBTS

2012-06-05 Thread Andrew Davis
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 http://www.law.cornell.edu/cfr/text/47/15.121 . To answer your question, both USRP1 & 2 can handle the signal, so it's up to your pref

Re: [Discuss-gnuradio] Question about OpenBTS

2012-06-05 Thread hOWARD wONG
On 6/5/2012 10:01 PM, Pan, Luyuan wrote: On 2012/6/4 23:28, Thomas Tsou wrote: On Sun, Jun 3, 2012 at 9:49 AM, Pan, Luyuan 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

Re: [Discuss-gnuradio] Question about OpenBTS

2012-06-05 Thread Pan, Luyuan
On 2012/6/4 23:28, Thomas Tsou wrote: On Sun, Jun 3, 2012 at 9:49 AM, Pan, Luyuan 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 "

Re: [Discuss-gnuradio] Question about OpenBTS

2012-06-04 Thread Thomas Tsou
On Sun, Jun 3, 2012 at 9:49 AM, Pan, Luyuan 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 requ

[Discuss-gnuradio] Question about OpenBTS

2012-06-03 Thread Pan, Luyuan
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 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailma

Re: [Discuss-gnuradio] Question about OpenBTS BM 2009 RF chains

2009-09-11 Thread David Burgess
Hanwen - The -60 dBm refers to the signal level at the output of the USRP, not the final ouput of the BTS. The leakage signal is amplified by the PA, but in the full BTS design you reference it is subject to an additional 70 dB attenuation in the duplexer. So the actual output level at t

[Discuss-gnuradio] Question about OpenBTS BM 2009 RF chains

2009-09-08 Thread hanwen
Hi, I read the following article describing the RF chain of OpenBTS will be used in BM'09. http://sourceforge.net/apps/trac/openbts/wiki/OpenBTS/BM2009RF In the "RX/TX isolation" part, it says that "The USRP outputs noise in the receive band about 80 dB below the transmit signal level, or around -