[Orion] Question about noise floor

[BarryG]

 Appreciate W4ZV sharing his experience with the Orion AGC.  I've read Ten-Tec's excellent articles, and maybe I've missed something, but it seems like a piece of the puzzle is missing.  My understanding is that the digital AGC applies a varying degree of compression to signals above the threshold.  The digital AGC does not amplify - a signal will emerge with the maximum gain if the digital AGC applies no compression to it. If this understanding is correct (and perhaps it is not), can someone please explain the following from the Optimization document:"The threshold value in the AGC system acts like an IF gain control for the receiver chain – turn the value low (like to .37 uV) and the receiver gain comes up, as do the signal levels."  I would think that lowering the threshold will introduce compression and would lower the receiver gain.  I'd appreciate any help with what I'm missing here.  Perhaps the architecture is actually more complex. Thanks & 73,Barry N1EU(no Orion yet to play on)     

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