NooElec NESDR Mini USB RTL-SDR & ADS-B Receiver Set, (Previously TV28T v2), RTL2832U & R820T Tuner, MCX Input. Low-Cost Software Defined Radio Compatible with Many SDR Software Packages. R820T Tuner & ESD-Safe Antenna Input, Guaranteed
These DVB-T dongles have new-found popularity since it was discovered they can be used as very inexpensive software defined radios.These units are based on the R820T tuner IC made by Rafael Mirco.  There is also an RTL2832U IC on board of course, which allows for interfacing to a large number of popular SDR software packages.The connector type on the antenna and USB board is MCX.