Sticks with this combination RTL2832 R820T are relatively new on the market. The main difference to all the other supported tuners so far is that it uses low IF 3.57 MHz architecture instead of Zero IF. That means the tuner is only connected to the In Phase ADC input
So far the tuner driver comes straight from the kernel driver that Realtek supplies, and setting gain manually is not supported yet, though functions still that awaits there. There is still is a lot that needs to be done, the best thing most Preliminary would be Being redundant as it seems.
The driver originally had a frequency limitation of 40 MHz to 900 MHz, but tests showed that the PLL of my stick can achieve lock up to 1766 MHz, and indeed both ADS B at 1090 MHz and L Band DAB at 1463 MHz Also, the PLL could lock again at 1850 MHz to 1860 MHz
Given that the supply of E4000 based sticks is dwindling, I m pleased to see a new tuner that has the potential of becoming a good replacement, and staying for a while on the market.