Assuming you set your processor's limiter to 100%, you still need
to set the output level to the radio so it doesn't overmodulate. Even
just 101% modulation means clipping; pump that with 100% average noise
and you have the potential for some serious bleedover. And there's no
way for the average user to determine the precise point at which his
radio is at 100% modulation. Radios are set at the factory for 95% to
98% modulation to allow for slight variations in tolerance that happen
during normal operation; for you to claim that your processor limits
modulation to 100% all of the time is not only absurd, it's impossible
because of the tolerance limitations of the radio.

I think this is the last of your comments I didn't have time to
respond to before. You are certainly correct that you need to set the
radio so it doesn't overmodulate. In the VoiceMax installation
instructions it says that for a precise modulation level, you should
use a scope. While it's true there's no perfect way to do this without
a scope... you should be able to get reasonably close by having an
assistant monitor your transmission during the adjustment. This is
also covered in the VoiceMax installation instructions. Even levels up
to 110% modulation will not cause excessive bleedover. The people you
hear on the air bleeding 20+ channels are usally running a combination
of excessive power with perhaps upward of 130% modulation. That is a
deadly splattering condition all right.

However, I don't agree with your statement that factory radios are set
to 95-98% possible modulation. There is no way there is enough margin
here to assure they will not exceed the 100%. That's why they they
normally set to around 85%. Both my Cobra radios were in that
vicinity. I have never put a factory radio on the scope and seen more
than 90%!