On 11/16/2011 9:28 AM, V G wrote: > On Wed, Nov 16, 2011 at 8:21 AM, Kerry Wentworth > wrote: >> Think of it this way: >> >> Assume you have a sine wave with a period of 360 uS at 2V p-p. >> 30 degrees after a 0 crossing, the voltage will be .5V. At 45 degrees >> it will be .707V, and at 60 degrees it will be .866V. This is the >> definition of a sin wave. >> You can break it down further, and say that, for any 2 points (T1 and >> T2), the voltage at T2 would be >> V2 =3D sin(T2) * (V1 / sin(T1)) >> If you have a different value of V2, then you don't have a sin wave, >> even if it LOOKS like a sin wave. > THANKS! That makes a lot of sense. Finally clicks. > > Also, I found this to be very useful: Demo 1: Time Domain vs. > Frequency Domain of a Sinusoid > http://library.wolfram.com/infocenter/Demos/7774/ > Is there a way to view the demo without having access to the Mathmatica=20 product? I have not checked YouTube yet, I will do that next... BTW, once you get hooked on the RF subject there is no cure, it will be=20 with you for your remaining life. It will pop into you head when you really ought to be doing something=20 else much like a computer virus. The ARRL Radio Amateur Handbooks provide a good foundation to get started. Once again I recommend that you just jump in and become a licensed Ham.=20 You are missing out on a lot. I have the good fortune to know a young fellow (11 years old) who passed=20 his Extra class test this year. I think he did it on memory but the=20 questions he is asking on the air now indicate that he plans to fully=20 understand the technical details pronto! Passing the test before you know algebra is cool! --=20 John Ferrell W8CCW "The man who complains about the way the ball bounces is likely to be the one who dropped it." =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .