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Re: [Discuss-gnuradio] lowest power of the signal that LFRX can receive


From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] lowest power of the signal that LFRX can receive
Date: Tue, 15 Mar 2011 20:07:20 -0400
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Thunderbird/3.1.7

Dear all,

What is the lowest power of the signal that LFRX can receive?

Really appreciate any of your help

Yan

The LFRX has almost no gain, so you're limited by the noise floor of the ADC. In the USRP2, you can probably reliably detect signals down to about -60dBm or so. In the USRP1, you need somewhat more signal, about -50dBm or so. But those are ballpark numbers. But it depends on the details, and what kind of signals you're trying to detect, and whether you want to
  demodulate them, or merely detect their presence, etc.

--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org





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