[CQ] Cheap SDRs?

[AF6MQ]

is that why they're separate?
i thought it was so FFT and other IQ based algos could
have a big part of the computation "done in hardware" so to say?


i'm ordering an SoftRock Lite i will be attaching to my HF receiver's  
IF.
http://kb9yig.com/
Tony says he's out of the Si570 clocks, so thats why the others
are blanked out from shopcart till he gets more in.

my kenwood ts-570's 1st IF is 73mhz which is a wee too fast for the  
softrock,
but the 2nd IF is 8.33mhz, has the optional filter selector,
and therefore is easy tap for a limited "panadapter" for my rig.
even if my whimpy 48khz usb sound card  only gives me +/-10khz,
thats still a better "view" than i have now (none).

i have no idea what IF a broadcast-FM receiver would use,
but the same idea should work.

now i have to look inside my pcr-1000 and see where its IF(s) can be  
tapped,
what a tool that would be!

--gaspo.

> Some schemes use one signal, some use I and Q. I and Q are just two
> demodulated signals 90 degrees out of phase of each other. Using them
> allows you to get the higher resolution of both DACs combined, rather
> than just one DAC.
>
> Thanks
>
> Bruce
>
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