View Single Post
  #221   Report Post  
Old July 10th 07, 11:26 AM posted to sci.electronics.basics,rec.radio.shortwave,rec.radio.amateur.antenna,alt.cellular.cingular,alt.internet.wireless
Jimmie D Jimmie D is offline
external usenet poster
 
First recorded activity by RadioBanter: Feb 2007
Posts: 287
Default AM electromagnetic waves: 20 KHz modulation frequencyonanastronomically-low carrier frequency


"Ron Baker, Pluralitas!" wrote in message
...

"Dana" wrote in message
...

"Ron Baker, Pluralitas!" wrote in message
...
Do you understand that a DSB signal *is* AM?

So all the AM broadcasters are wasting money by
generating a carrier?


How did you jump to that conclusion.


Is "DSBSC" DSB?


There have been attempts to remove the carrier but receivers could not be
manufatured at a reasonable price that would demodulate the signal with the
fidelity of an AM BCB signal. Probably could be done today but what would
you l do with all those AM rx that suddenly dont work when the transition is
made.