It’s the gain control range. Not the absolute gain. I don’t know of the top of 
my head how much of that range is gain and how much is attenuation. 



Sent from my iPhone

> On Sep 29, 2020, at 1:43 PM, Mark Koenig via USRP-users 
> <usrp-users@lists.ettus.com> wrote:
> 
> 
> The TwinRx daughtercard identifies as having 0-93dB gain range.  Is this 
> true?  If I dial in 90dB am I truly getting 90dB of gain and my incoming 
> signal is amplified that much or is there some sort of offset and the gain 
> range is something different?  I believe the UBX-160 offers 0-31.5dB.
> 
> Thanks
> 
> Mark
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