[hpsdr] HPSDR Signal Overload ( In the digital processing???)

[Greg - ZL3IX]

Not quite accurate, Joe.  An LTC6400-20 provides 20 dB of gain in front 
of the ADC.   I think one would have to call this a preamp.

The switchable attenuator is in front of the preamp, and cancels its 
gain when switched in.

73, Greg ZL3IX

On 2011-04-07 01:05, Joe Martin K5SO wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> There is already a 20 dB switchable attenuator on the Mercury board.  
> The attenuator is switched in when the "Pre-amp" selection is "OFF".  
> Direct connection (no attenuation) occurs when "Pre-amp" is "ON" 
> (there is no pre-amp on Mercury, as was discussed on the reflector 
> recently).
>

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