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#1
July 10th 03, 04:52 AM
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'Doc wrote: Jim, And also only 50% modulation... 'Doc How do you arrive at that figure? |
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#2
July 10th 03, 10:29 PM
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JJ, 500 / 1000 = 50% 'Doc |
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#3
July 10th 03, 11:24 AM
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'Doc wrote: JJ, 500 / 1000 = 50% 'Doc That is not correct. To 100% modulate an rf carrier the audio power must equal 50% of the unmodulated carrier power. It takes 50 watts of audio to 100% modulate 100 watts of carrier. This is assuming high level modulation where the audio is applied to the output stage. At 100% modulation power is increased 1.5 times the unmodulated carrier power. So for 100 watts with 100% modulation, the output would be 150 watts, with 100 watts in the carrier and 25 watts in each sideband. Get a book and look it up. |
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