Hi all, I have a USRP2 and a BasicRX. I am new to GNURadio and I am still learning. I have successfully tested the USRP2 with BasicRX. What I have read so far the BasicRX is capable of receiving RF signals from 1-300MHz. But on the FFT window generated by the GRC, it will only display up to 100MHz, limited by the maximum samples. I have searched through the discussion list that the frequency is wrapped and the BasicRX needs a frontend RF circuit.
Basically I will need a LNA, a frequency mixer and an oscillator. To my understanding, if I multiply the RF input signal with 100MHz, the whole band ranging from 100MHz - 200MHz will be brought down to 0-100MHz. So I can display it to the FFT window. If I want to scan 200MHz-300MHz, I shall multiply the RF signal with 200MHz. Please correct me if I'm wrong. I have been browsing minicircuits to get the parts needed and I'm not sure if I got everything right. As for the LNA, I have the ZFL-1000LN+ http://www.minicircuits.com/cgi-bin/modelsearch?model=ZFL-1000LN%2B&search_type=info For frequency mixer, I have found the ZFM-3+ http://www.minicircuits.com/cgi-bin/modelsearch?model=ZFM-3-S%2B&search_type=info For oscillator, I have found the ZX95-200+ http://www.minicircuits.com/cgi-bin/modelsearch?model=ZX95-200%2B&search_type=info Are these components correct and enough for me to build the RF frontend? Thank you for your answers. Regards, Ahmad Zaki Yaacob _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
