[AMRadio] 4-1000A Grounded Grid Class-C


Larry Szendrei ne1s at securespeed.us
Thu Oct 3 08:56:23 EDT 2013


On 10/3/13 8:31 AM, Bry Carling wrote:
> I'm guessing 90% modulation is hard to distinguish from 99% mod on the air...
>
> Bry Carling
> http://af4k.com
>
True, but you'll definitely notice a difference between 90% vs. 120-150% 
on positive peaks. There are plenty of signals on the air with positive 
peaks exceeding 120%, that don't exceed 100% on negative peaks, due to 
the natural asymmetry in the male voice. You need a transmitter with the 
headroom to allow it, though, and a plate-modulated grounded-grid stage 
won't (without also modulating the input signal, that is).

73,
-Larry/NE1S


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