Osmo SDR board - buy

Alan Campbell alan_r_cam at yahoo.com.au
Thu Mar 29 00:16:26 UTC 2012


Any idea when the SDR boards will be available to buy? And the cost?

I was planning an SDR myself when I first saw the Osmo design. 

There are enough similarities to make yours worth buying - namely, the same FPGA I was looking at.
I'm debating whether to buy the Lattice XP Brevia FPGA development kit. All else being equal, I'd rather give YOU guys the money...

Regards,

-- Alan Campbell


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My own design ? 

That uses a SINGLE 12-bit ADC, clocked at 48 MHz  (same as USB clock, makes for simpler circuit).
The "Zero IF Tuner" becomes a superhet design, with an IF output of 60 MHz. 

Undersampling & downsampling in the FPGA gives a 12MHz bandwidth (actually less, depends if IFstage bandwidth & degree of downsampling)

2-stage RF front end: 1-30MHz (si 570 is 61-90MHz)  and VHF 140-150MHz (si 570 is 80-90MHz).
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