Re: K3: course wanted: Panadaptor 101

Posted by Jack Smith-6 on May 24, 2007; 3:38pm
URL: http://elecraft.85.s1.nabble.com/K3-course-wanted-Panadaptor-101-tp447983p447989.html

Yes, of course. I had forgotten it was an I/Q demodulator.

Jack K8ZOA


[hidden email] wrote:

>> A 192 kb/s sample rate gives you a usable bandwidth (Nyquist = sample
>> rate/2) of 96 KHz, assuming a brick-wall anti-alias filter. More likely,
>> the usable bandwidth will be about 80 KHz with a practical anti-alias
>> filter.
>>    
>
> Make that 80 or so kHz lower side band and 80 or so kHz upper side band, and
> then you have 160 or so kHz total, without breaking Nyquist. This assumes that
> you have I & Q signals.
>
> This is what Flex-Radio does.
>
> See:
>
> http://www.flex-radio.com/Data/Doc/qex1.pdf
> http://www.flex-radio.com/Data/Doc/qex2.pdf
> http://www.flex-radio.com/Data/Doc/qex3.pdf
> http://www.flex-radio.com/Data/Doc/qex4.pdf 
>
> vy 73 de toby
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