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'Back swing' is applying more 'modulation' to a carrier than the total power of that carrier. The excess produces a 'negative' signal which decreases the total power of 'modulation' + carrier and so that output meter shows a drop in power... a 'backswing' of the meter's needle.

All of the above is an over simplification, it isn't scientifically accurate. It should give you the idea though. I don't have any way of drawing the wave forms to show that so some imagination would be nice.!

'Modulation' means a variable frequency signal (voice).
'Carrier' means a constant signal of a fixed frequency.
When that 'modulation' signal is combined/applied to the carrier signal it produces an Amplitude Modulated signal... AM -mode- signal.

Single Sideband signals are still Amplitude Modulated signals but it has the carrier and one sideband of that AM signal removed.

Nothing 'new' in this, just a different way of saying it...
Paul

<blockquote data-quote="Paul-W5lz" data-source="post: 593974" data-attributes="member: 50240">&#039;Back swing&#039;&nbsp; is applying more &#039;modulation&#039; to a carrier than the total power of that carrier.&nbsp; The excess produces a &#039;negative&#039; signal which decreases the total power of &#039;modulation&#039; + carrier and so that output meter shows a drop in power... a &#039;backswing&#039; of the meter&#039;s needle.All of the above is an over simplification, it isn&#039;t scientifically accurate.&nbsp; It should give you the idea though.&nbsp; I don&#039;t have any way of drawing the wave forms to show that so some imagination would be nice.!&#039;Modulation&#039; means a variable frequency signal (voice).&#039;Carrier&#039; means a constant signal of a fixed frequency.When that &#039;modulation&#039; signal is combined/applied to the carrier signal it produces an Amplitude Modulated signal... AM -mode- signal.Single Sideband signals are still Amplitude Modulated signals but it has the carrier and one sideband of that AM signal removed.Nothing &#039;new&#039; in this, just a different way of saying it...Paul</blockquote>

[QUOTE="Paul-W5lz, post: 593974, member: 50240"] 'Back swing' is applying more 'modulation' to a carrier than the total power of that carrier. The excess produces a 'negative' signal which decreases the total power of 'modulation' + carrier and so that output meter shows a drop in power... a 'backswing' of the meter's needle. All of the above is an over simplification, it isn't scientifically accurate. It should give you the idea though. I don't have any way of drawing the wave forms to show that so some imagination would be nice.! 'Modulation' means a variable frequency signal (voice). 'Carrier' means a constant signal of a fixed frequency. When that 'modulation' signal is combined/applied to the carrier signal it produces an Amplitude Modulated signal... AM -mode- signal. Single Sideband signals are still Amplitude Modulated signals but it has the carrier and one sideband of that AM signal removed. Nothing 'new' in this, just a different way of saying it... Paul [/QUOTE]

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