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Old November 5th 07, 09:02 PM posted to rec.radio.amateur.boatanchors
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Default Seeking advice on regenerative receiver

Your feeling is correct -- regeneration in the IF will narrow the IF
response, but won't correct for images before the IF.


I agree, but in my case regeneration occurs in the converter stage, not in the
IF amplifier! That is reason why I am wondering about.

With a 500 kHz IF, I would have images only 1 MHz away. So I am worrying about
the image frequency.

73

Tony I0JX

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Old November 5th 07, 09:34 PM posted to rec.radio.amateur.boatanchors
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Default Seeking advice on regenerative receiver

Antonio Vernucci wrote:
Your feeling is correct -- regeneration in the IF will narrow the IF
response, but won't correct for images before the IF.


I agree, but in my case regeneration occurs in the converter stage, not
in the IF amplifier! That is reason why I am wondering about.

With a 500 kHz IF, I would have images only 1 MHz away. So I am worrying
about the image frequency.

Well, is the regeneration feeding back energy at IF or at RF?

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Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" gives you just what it says.
See details at http://www.wescottdesign.com/actfes/actfes.html
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Old November 5th 07, 10:42 PM posted to rec.radio.amateur.boatanchors
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Default Seeking advice on regenerative receiver


Well, is the regeneration feeding back energy at IF or at RF?


It is feeding back IF energy into the grid where also the RF signal is applied

73

Tony I0JX
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