[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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