[ICOM] IC-7000 AM Modulation Problem

K8CM k8cm at qsl.net
Fri Apr 7 16:44:49 EDT 2006


At 03:49 PM 4/7/2006, you wrote:
>DB is simply a method of comparison based on logarithm if I recall my EE math.
>
>The logarithm of any given number is the exponent of a power to 
>which another given invariable number, called the base, must be 
>raised in order to produce that given number. Thus, let 10 be the 
>base, then 2 is the logarithm of 100, because 10^{2} = 100, and 3 is 
>the logarithm of 1,000, because 10^{3} = 1,000.

I think something is missing between these two paragraphs  ...  oh, 
looks like Mac covered it.


>So, 10 to the 3rd is therefore 2x.  3db gain (or differential 
>perhaps might be easier to think about) is a comparison of one value 
>to another, in simple terms.   3 dbd would then be 2x over a dipole.
>

73  <>  Carl
     >:-} 



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