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#11
August 26th 13, 12:09 AM
posted to uk.radio.amateur,rec.radio.amateur.boatanchors,rec.radio.amateur.homebrew
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Crystal phasing & single signal reception
"Percy Picacity" wrote in message
... In article , "gareth" wrote: snip You're still missing the point that in addition to the peak response, there is also a deep null. No I'm not! It can be adjusted with the 'phase' control to null a signal *at IF* near to the wanted one. Adjusting the position of the null has no affect on beat frequency with the wanted signal, or the beat frequency of the unwanted signal (it gives the BFO a less strong IF interfering signal to beat with but it does not affect the frequency of the beat note, just the loudness). Tuning the BFO has no effect on the null. The two controls do not interact, though they both have an affect on readability. Straw Man |
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