Hi List, Hayati Aygün released a new fork from librtlsdr providing trove of new features, enabling features provided in R820T that were (finally) made public by the leak of the proper documentation of its registers. In my specific case, the eye-popping feature is the availability of a new ExtIO library, used in some software like HDSDR (which I use as a panadapter) with bandwidth control. This is especially useful in HF bands, where strong broadcasts nearby can be heavily attenuator with a narrower bandwidth. I found use of BW control in VHF as well; for the very same reason; strong nearby stations generating signal images that can be just put outside the bandpass - and bye bye. His ExtIO build can be found here (bonus point: it is open source) and requires rtl_tcp (download here) to feed the stream to ExtIO. A big thank you to Hayati for the enhancements and evolution of librtlsdr. - RF.