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Author Topic: Softrock/PowerSDR Anomalies (AKA Bugs) - Distortion on AM - Anyone else notice?  (Read 10768 times)
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WA1GFZ
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« Reply #25 on: February 15, 2009, 10:22:05 AM »
John,
Interesting thought. It could be duplicated with a signal generator to see where the sound card / QSD falls apart. I never tested anything further out than about 20 KHz.
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w3jn
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« Reply #26 on: February 15, 2009, 11:29:55 AM »
Another thought - doesn't that softrock downcovert to a 10 KC IF or something?  If you're trying to beat 30 KC worth of stuff thru it, the images on the low end will screw it up I'll bet
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WA1GFZ
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« Reply #27 on: February 15, 2009, 04:47:13 PM »
True,
With a 10 KHz baseband you have about 2 X 9 1/2 KHz of usable bandwidth until you run into zero.  All these problems go away with Mercury, Perseus and QSR1. How quickly I forgot.
Without I/Q you will see images. 
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