[AMRadio] Dreaded D-104

[Jim Wilhite]

:You are correct Bob, it is really easy.  To do this I put up a three sided 
box around the mic lined with sound deading material.  I put the speaker on 
the open side then I attach a scope to the outpput and run the audio 
generator across the manufacturere's range to see what I find.

You may be surprised at what you find.  Make the box so it is about a foot 
from the mic.

Jim
W5JO




----- Original Message ----- 

> Use an audio generator, feed its output into a speaker, and observe the
> microphone output on an oscilloscope.
>
> The other method is to READ the manufacturer's DATA Sheets.
>
> It gives the output voltage or dBm, AND the frequency response.
>
> It isn't rocket science.
>
> Bob - N0DGN
>
> On 10/6/2011 10:45 AM, Warren Elly wrote:
>> I use an ac voltmeter to compare output of d-104 cartridges
>>
>> 73, Warren W1GUD
>>
>> On Oct 6, 2011, at 10:18 AM, Bob Macklin wrote:
>>
>>> I'm just curious?
>>>
>>> Does anyone know how to measure the characteristics of a microphone. I 
>>> don't
>>> suspect many (if any ) hams have what it takes to measure the
>>> characteristics of a microphone.
>>>
>>> Most of the measurements hams could do would be subjective.
>>>