[AMRadio] Dentron Clipperton on am?..

[Kim Elmore]

Thanks, Geoff!

Yes, it is interesting.

What I'm looking for amounts to a rigorous Fourier analysis of some 
of the things I see discussed. For example, does inverting the phase 
of the audio really change the power in the side bands? If so, by how much?

It's been awhile since I took time series analysis, but I think that 
all inverting the audio phase is multiply the entire Fourier series 
by -1. The signs are arbitrary, though, as long as the relative signs 
remain unchanged. So, because the power density is given by the 
square root of the sum of the squares (a Minkowski L2 norm for those 
so inclined) the power distribution across the spectrum remains unchanged.

I am quite ready to be shown my error, though. I'll try to make time 
to pull out my time series notes to check what I've written though. 
Again, I'm pulling it all out of rather dusty memory...

73,

Kim N5OP (still working on getting the Globe Champ airworthy)

At 05:53 AM 4/12/2011, you wrote:
>On 04/11/2011 08:42 PM, Kim Elmore wrote:
> > Discussions like this are interesting and I hope not to open a can of
> > worms, but I think the proof of any assertion like this lies within
> > some estimate of the actual power in the side bands. That's where any
> > signal that we want lies and it's what is detected. Has anyone done
> > an analysis to show that more power is in the side bands one way than
> > another? Any spectrum analysis or spectrum analyzer displays?
> >
>
>There's some good discussion on this, Kim, at
>http://www.qsl.net/wa5bxo/all-about-modulation.htm and at
>http://www.qsl.net/wa5bxo/amtech.html
>
>Very interesting reading.
>
>73 = Best Regards,
>-Geoff/W5OMR
>
>
>
>______________________________________________________________
>Our Main Website: http://www.amfone.net
>AMRadio mailing list
>Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
>List Rules (must read!): http://w5ami.net/amradiofaq.html
>List Home: http://mailman.qth.net/mailman/listinfo/amradio
>Post: AMRadio at mailman.qth.net
>To unsubscribe, send an email to amradio-request at mailman.qth.net with
>the word unsubscribe in the message body.
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html