Re: Has anyone built Ashhar's Specan?

Jerry Gaffke

Maybe switch between the 45khz crystal filter, the 12mhz crystal filter, and analyzing the audio with an ADC.
Jerry, KE7ER

On Wed, Jul 26, 2017 at 10:17 am, Ashhar Farhan wrote:
you could just do rms of the audio. the main challenge would be that given 3 khz bandwidth, the 30 mhz scan would need a reading every 1.5 khz. that means, 20,000 readings for the full scan. it will take a long time. this ia why specans have variable bandwidths.

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