Thank you for the comment.
Maybe I didn't use the correct wording. When I said "bench tune them" I was under the impression they are able to "pre-program" the hardware to optimize the receive sensitivity in the specify application frequency band (if they could do that it would be news to me) before they ship them out.
Read this from their listing on Amazon and you can see what led me to ask the question.
r/https://www.amazon.com/Stratux-1090ES-UAT-Radio/dp/B01ENU1DQC/ref=sr_1_20?ie=UTF8&qid=1534797955&sr=8-20&keywords=stratux
Two "nano" sized SDRs, 1x pre-programmed for Stratux 1090ES, 1x pre-programmed for Stratux 978 MHz/UAT. Does not include antennas.
New: Now with updated R820T2 tuner.
Looks like this may be the ticket for the combo?