[hpsdr] Multiple receivers on single mercury with down converters

[David McQuate]

He's wanting to bring the signals from two separate antennas into a 
single Mercury, but keep the two signals separate so processing can done 
in software.  If the two down-converters have IF frequencies of 50 and 
40 MHz, and the two receivers in the single Mercury are tuned to 50 & 40 
MHz, their digital outputs should be phase-coherent, if the 
down-converter local oscillators maintain coherence.

Dave
WA8YWQ

On 8/27/2012 1:05 PM, David Bridgham wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> On 08/27/2012 05:53 PM, David McQuate wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> If you want phase coherence, you'll need to generate the two local
>> oscillators for the two down-converters very carefully--or they will
>> have random, and varying phase relationships.
> Why wouldn't you just use a single, common LO for the two down-converters?
>
>   -Dave
>
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