B
Simple way to change mike phase, reverse the leads on the mike elementAnd a question.
If I wanted to use mic phasing and modulator phase reversal for improved audio density on AM with a plate modulated transmitter, is there a very simple means of doing so without specific equipment to determine that phasing and phase reversal?
And...
Is a plate modulated transmitter required for this to work?
Curious...
- 'Doc
freecell,
what is your opinion of compressing the negative peaks of an AM signal so they cant exceed 100% and allowing the positive peaks to exceed 100%?
LC
a 100% negative peak = 0, so how can it exceed zero/100% - modulation? the modulation is already turned off.you can't turn it off anymore than off.
thats like trying to turn a bulb onto negative brightness.
I think NU9N got the overmodulated labels for low-level and high-level backwards.
High-level is where modulation power is applied to the DC power of the final(s). Also known as "plate modulation".
Low-level is where modulation is applied before the final amplifier and then amplified by linear devices.
When you over-modulated on a high-level design, the output signal will appear as double-sideband reduced carrier, but not splattering.
Its the low-level design that splatters on >100% negative peaks.