The tuner snapshot I posted a few posts back showing a SNR of 2.65dB with RSSI of -122.73 was taken a couple months ago when I was playing with the small cardboard and foil patch that was modeled after a what I could discern from a web snapshot of the Outernet patch.
This tuner snapshot is the same receiver setup with the antenna disconnected:
Now, let's do some math... The difference between the antenna connected and the antenna disconnected is 3dB, which is approximately the SNR with the antenna connected, considering how much SNR jumps around. So, the assertion that a lower RSSI means better signal is false. In this case, lower RSSI means no antenna.
For comparison, the Outernet patch, today, a few minutes ago, is here:
Now, the SNR is 8.37 with RSSI of -112.87, for a difference of approximately 13dB from no antenna reading of -125.74. Where's the missing SNR???? It's noise. Or is it?
Let's put the cardboard patch back on...
Now, the difference in RSSI of the cardboard patch compared to the RSSI of the Outernet patch is 4.34dB, while the SNR of the cardboard patch is 6.77dB compared to 8.37dB of the Outernet Patch, a difference of 1.6dB (I'm quite proud of that, BTW)
As you can see, the SNR/RSSI is not necessarily directly related. The SNR is the most important figure. I'll let you stew on that..