Hello Now improved RTL-SDR dongles are widely available, according to sellers' notice they support bias tee and direct conversion. So far rtl-sdr driver has support for bias tee for some time, but the last tag 0.6.0 is quite old and does not have this. Some distributions tend to stick to releases/tags of packages, so they still have rtl-sdr-0.6.0 without bias tee support.
Is there a chance to have new tag of rtl-sdr (if the bias tee support is finished)? -- Wojciech