Re: [Discuss-gnuradio] RX Gain (UHD vs libusrp2)

[Marcus D. Leech]

On 28/03/2011 10:02 AM, Jason Abele wrote:
> > Even setting ADC-digital = 6.0, ADC-digital-fine = 0.5 and setting the
> > WBX-PGA0 to same value used with libusrp2
> > the result is not the same as in I'm losing something like 20 dB.
> > Is this expected ?
> Missing 20dB sounds like maybe you have the other antenna port
> selected.  Have you tried swapping antenna ports or using a call to
> set_rx_antenna() to explicitly select your antenna port?
>
> Jason
Also, the USRP2 has no VGA in front of the ADC -- the only gain control 
you have is the WBX itself, which is a total range of 31.5dB, AFAIR.