Re: [linrad] USB peripheral Radio

[Richard Hosking <richardh@xxxxxxxxxxxxxxxx]

I am looking at some other devices which might be more useful than the 
USB system with its limited 12 bit resolution.
Eg the AD9874 is an IF subsystem with 16 bit resolution, 90dB dynamic 
range, and a baseband bandwidth of up to 270 KHz with I/Q serial data 
output. This could be used with a front end mixer/LO for the band of 
interest, with an IF of between 10 and 300 MHz. Two of these devices 
could be split in parallel for better strong signal handling (one of 
them with an attenuator of say 30 dB - select the second one for strong 
signals)

How difficult would it be to adapt Linrad to such a device? (ie control 
software with digital data input rather than analog)
Any ideas?
Thanks

Richard 

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