This is a fit for something I want to make.
I want to make a mic for tracking wildlife. I want to make it so you can hear the
faintest, furthest away sounds. Anotherwords, I want to crank the gain up to
infinity and beyond and I DON'T want to hear transistor hiss.
I want to use a 6mm mic case and I have 3 volts from batteries to work with. I
want to use an onmi first.
I am not familiar with RF mics. Is this an application best tried as an RF mic?
Also if I have to have the capsule 6 inches away from the PCB, is this going to
be a problem?
If we want to try this as an RF thing, this may be useful; I have a friend around
the corner that owns a big time RF testing facility. I can get him in on this too if
that brings anything helpful to the project. He's one of those crew cut, slide
rule, short sleeve shirt, 60's NASA type guys, who has designed tons of DOD
RF stuff.
So what's the concept of the RF mic and is this the way to go for MAXIMUM
low noise and high gain? What needs doing to make it work?
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--- In micbuilders@..., "junkmail48188" <keith@n...> wrote:
If there is enough interest in having ECM manufacture a replacement
for the WN60/61 capsule. Then how about manufacturing a capsule that
could be used in a RF mic? The capsule would be the capacitor in the
rf oscillator circuit. The resulting FM signal would then be
demodulated into a low impedance balanced output to the recording
device.
The mic electronics could be powered from 48V phantom power.
This type of microphone would be a very low noise mic!!
Anyone got any ideas, semantics, or sources of information???
Keith
