Here is an excellent article about that:
http://www.g8jnj.net/softwaredefinedradio.htm
Here is where I’ve found it:
http://www.rtl-sdr.com/measuring-the-input-impedance-of-the-rtl2832u-direct-sampling-input-pins/
Here is an excellent article about that:
http://www.g8jnj.net/softwaredefinedradio.htm
Here is where I’ve found it:
http://www.rtl-sdr.com/measuring-the-input-impedance-of-the-rtl2832u-direct-sampling-input-pins/