Quote:
Originally Posted by Bow If you have the same radio modified for say... a 2 Watt "Dead Key" and 37 Watts of "Swing"?
Wouldn't you have a lot of over modulation,splatter, and the ability to to get a "Worked all Toasters" award from your neighbors? |
the 4:1 ratio for 100% modulation applies to
symmetrical AM.
Where symmetry means the peak reduction in power (due to modulation) is the same as the peak increase in power.
Because with
AM, modulation is alternating reduction and increase in total power.
Where you get into trouble is when the reduction in power attempts to go past zero power. This hits like a hammer on a nail, meaning its abrupt and wide in bandwidth. This is splatter.
On the opposite end of the cycle, the increase in power, the modulation can exceed 100% with a only tiny increase in distortion. To be loud, you dont want more on the negative side, only more on the positive.
Over negative modulation is a problem with radios and swing kits.
Positive side modulation becomes an issue with power amplifier transistors only able to put out limited power.