SRA-198 microphone frequency response

Lower frequencies rob efficiency, but higher frequencies actually help the signal become more intelligible at a greater distance.

 

Clarification....
Over short distances high frequencies are more noticeable because lower frequencies are drowned out by background sounds, like the rumble of traffic, and our ears are not as sensitive to low frequency sounds as they are to sounds in the 4,000-7,000Hz range.
So with your signal barely clearing my noise floor, unless you're passing up to 4000hz audio
I'm going to have a difficult time being able to differentiate between your signal and the noise. I guess this explains why I can easily pick out one of Mark's radios out in the distance because they cut through the airwaves like a knife through butter.
I guess it also explains where the term mud duck come from.

 

I also like to communicate with the least bandwidth required it's just the spectrum of bandwidth that I like to use is a bit closer to what the human ear is capable of detecting. There's lots of people out there that are into high fidelity and trying to sound like an AM broadcast station with lots of bass. Unfortunately they don't realize that what they are doing is decreasing the efficiency of their station.

 

Technically that's above 100% modulation.
Anything over 4 times the carrier is beyond 100% modulation

 

Does this constitute High Fidelity?
.086 hertz to 7500 hertz

 

Maybe not structurally but acoustically it's about the perfect Communications microphone for noisy environments.