Re: [Discuss-gnuradio] receive sensitivity of B200
Are you rx'ing only with the B200, or tx'ing too? If you have a VHF antenna, you can tune it to your local FM radio stations and you will see them on uhd_fft if things are set up correctly. Adding to what Marcus said, check the correct LED is lit to verify you're using the right antenna port. M On Sun, May 18, 2014 at 11:56 PM, Marcus D. Leech mle...@ripnet.com wrote: On 05/18/2014 05:49 PM, Robert Light wrote: Hi, I use B200 with OpenBTS at 900MHz. I get very low range (about 10m only) and I identified that this is due to receive channel in B200. Changing rxgain between 0 and 70dB makes vey little difference. Does anyone know how the receive sensitivity of B200 compare with, for example, WBX? What could be the reason for this low sensitivity? uhd_fft spectrum looks normal , in the sense that I do not suspect a broken LNA. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio Are you on the correct antenna port? The B2xx RF section is roughly the same noise figure and total gain as a WBX. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] receive sensitivity of B200
Hi, I use B200 with OpenBTS at 900MHz. I get very low range (about 10m only) and I identified that this is due to receive channel in B200. Changing rxgain between 0 and 70dB makes vey little difference. Does anyone know how the receive sensitivity of B200 compare with, for example, WBX? What could be the reason for this low sensitivity? uhd_fft spectrum looks normal , in the sense that I do not suspect a broken LNA. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] receive sensitivity of B200
On 05/18/2014 05:49 PM, Robert Light wrote: Hi, I use B200 with OpenBTS at 900MHz. I get very low range (about 10m only) and I identified that this is due to receive channel in B200. Changing rxgain between 0 and 70dB makes vey little difference. Does anyone know how the receive sensitivity of B200 compare with, for example, WBX? What could be the reason for this low sensitivity? uhd_fft spectrum looks normal , in the sense that I do not suspect a broken LNA. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio Are you on the correct antenna port? The B2xx RF section is roughly the same noise figure and total gain as a WBX. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
