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Boom Mic - Just Mic



 
 
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  #1  
Old November 1st 05, 02:53 PM
Gary G
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Default Boom Mic - Just Mic

I have designed and built a headphone adapter/transformer
for some custom-molded in-ear headphones that offer
excellent noise isolation (passive).
I actually use them as a musician.

In the plane, they sound very nice and are quite comfortable.

So - what I want is a boom mic.
I've actually ordered/purchased a couple off eBay, and find
that they aren't quite working right. (I haven't lost much $, though.)

Can anyone point to a regular ol' boom mic (head band or holder
required)?

Quite frankly, I like my earphones better than 5 or 6
over-ear sets I've tried (and mine are not very cumbersome).
So I'd like to just buy (used of possible - money is an issue . . .)
some boom headset that has the .206/.210" connector and use
the yoke PTT switch.

Any help would be greatly appreciated!

Thanks,

Gary


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  #2  
Old November 1st 05, 03:39 PM
Toks Desalu
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Default Boom Mic - Just Mic

You might want to post this to rec.aviation.homebuilt.

Toks Desalu
PP-ASEL
Dyin' to Soar


"Gary G" wrote in message
...
I have designed and built a headphone adapter/transformer
for some custom-molded in-ear headphones that offer
excellent noise isolation (passive).
I actually use them as a musician.

In the plane, they sound very nice and are quite comfortable.

So - what I want is a boom mic.
I've actually ordered/purchased a couple off eBay, and find
that they aren't quite working right. (I haven't lost much $, though.)

Can anyone point to a regular ol' boom mic (head band or holder
required)?

Quite frankly, I like my earphones better than 5 or 6
over-ear sets I've tried (and mine are not very cumbersome).
So I'd like to just buy (used of possible - money is an issue . . .)
some boom headset that has the .206/.210" connector and use
the yoke PTT switch.

Any help would be greatly appreciated!

Thanks,

Gary




  #3  
Old November 1st 05, 04:04 PM
RST Engineering
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Posts: n/a
Default Boom Mic - Just Mic


"Gary G" wrote in message
...

I have designed and built a headphone adapter/transformer
for some custom-molded in-ear headphones that offer
excellent noise isolation (passive).


That's the easy part.




So - what I want is a boom mic.
I've actually ordered/purchased a couple off eBay, and find
that they aren't quite working right. (I haven't lost much $, though.)

Can anyone point to a regular ol' boom mic (head band or holder
required)?



That's the hard part. What you don't realize is that between this "regular
ol' boom mic" and the radio (generally inside the earcup of a headset or in
a little box on the headset cord) is an amplifier and matching circuit to
take the relatively low output of the "regular ol' boom mic" and kick it up
to match a carbon mic simulation.

That's the hard part.

Jim


  #4  
Old November 2nd 05, 01:14 PM
Gary G
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Default Boom Mic - Just Mic

That would imply that some DC votlage is supplied along
one of the conductors (much like Phantom Power in
sound mixing consoles).

Does anyone know which pin and what voltage that is at?

Thanks and regards,

Gary
  #5  
Old November 3rd 05, 11:22 PM
Mike W.
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Default Boom Mic - Just Mic

12v across the mic plug ( on the ring and sleeve, not the tip ).

"Gary G" wrote in message
...
That would imply that some DC votlage is supplied along
one of the conductors (much like Phantom Power in
sound mixing consoles).

Does anyone know which pin and what voltage that is at?

Thanks and regards,

Gary



  #6  
Old November 4th 05, 03:53 PM
Gary G
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Posts: n/a
Default Boom Mic - Just Mic

Perfect - thanks.
I can test the set I have now in our lab.
 




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