http://www.gnuradio.org/trac/wiki/OpenBTS/DesktopTestingKit said that the ISM band filter on the RFX900 will need to be removed, as described in the wiki link. However, I don't find any information about how to remove the ISM band filter in the wiki link. I read the discuss-gnuradio list and know that I need to bypass the filter with a capacitor and cut away the filter. Does it mean I need to remove the filter FIL1 and put a 100pf capacitor on C204? Sorry for this basic question. I am new in this field.