Good afternoon all,
Received my new dongle and new LNA (both Outernet “brand”). Installed both and got about a 3dB SNR. About 10 minutes later, SNR dropped to nothing and I had an idea - I wonder if the LNA and/or the dongle is getting too hot? It is a sunny day here in Northern Alabama and right at 88 deg F / 31 deg C.
So I got a big fan and pointed right at my RPi, dongle, and LNA. After about three minutes…SNR is back to hovering around 3 dB. I suspect something in my setup is getting too hot and with the fan, I’ve got enough cooling to keep things working properly. 
It has a status of “waiting for data” so I think I’m going to see if I can learn how to put something on the carousel. 
Thanks much,
ben