View Single Post
  #27   Report Post  
Old February 25th 06, 04:49 AM posted to rec.radio.cb
Frank Gilliland
 
Posts: n/a
Default Cobra 25LTD Classic tune up

On Sat, 25 Feb 2006 02:59:08 GMT, james wrote
in :

On Fri, 24 Feb 2006 18:45:59 GMT, Lancer wrote:

+Yes, really now...Jay has never had a mean thing to say to anyone in
+this group. I took exception at your condisending attitude to him.

*****

He proceeded to explain to me how AM worked and asked me to refer to
an old ARRL handbook.



Sifting back through the thread it appears that you began this
disagreement with an obtuse remark. To wit:

On Sun, 19 Feb 2006 15:40:53 -0800, Jay in the Mojave
wrote:

+Hello All:
+
+I am hearing that many guys are addeding in another modulation IC, and
+Modulation transformer to double the audio power, allowing a higher
+carrier power to be 100% modulated.
+
+Jay in the Mojave


******
The carrier in Double Sideband Full Carrier Amplitude Modulation
should remain constant during modulation. If not, then you have a far
greater problem.

james


Like, where did -that- come from? It sounds like you misconstrued his
remarks in your zeal to spout off something you read in an old text
book that you picked up at a flea market. Well, read the book again
but begin with the first chapter, which will usually state that
Fourier analysis is only a mathematical tool for advanced engineering
concepts (i.e, IMD analysis) and is not normally used to explain the
general principles of amplitude modulation; a comprehension of the
differences between the domains of time and frequency are usually
considered to be sufficient for most educational purposes.


Instead I referred back to my college
communications textbook and quoted an equation that is the standard
form to mathematically explain how AM works.



Well, your 'education' is lacking since the formula you provided is
only the basic groundwork for Fourier analysis; the analysis of
non-linear mixing of any two signals requires a function (or several
fuctions if there are more than two signals or if the signals are
non-sine) requiring an iterative progression in order to integrate the
distortion products. But I don't see how -any- of that matters when
all Jay was talking about was boosting the audio in order to fully
modulate a bigger carrier on a CB radio.....


Now is that is pompous or being condisending then I apologize to him.
It was my intention to properly explain mathematically how AM works.
Your reply to me seemed to be more of an attack. I don't try to attack
but explain technicaly the best that I can.



It wasn't needed, nor was it requested.


There is no intention of
ill will.



You were trying to toot your own technical horn. This is CB radio. Get
with the program.








----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----