From: digilyd@hotmail.com   
      
   Dick Pierce wrote:   
      
   > In addition to the other uses cited elsewhere, so-called RF   
   > microphone carrier systems are used for instrumentation purposes   
   > notably where extremely low frequency reponse is required.   
      
   I remember the big Sennheiser Brochure mentioning that MKH106's were   
   available in version with a lower response limit of 1 or 0.1 Hz on special   
   order.   
      
   > Referring again to Bruel & Kjaer, their microphone carrier   
   > system with an appropriate capsule is capable of measuring   
   > down to frrequencies approaching DC (i.e., it can act like an   
   > electronic baramoeter), while still maintaining response up to   
   > 150 kHz. Used with something like a B&K 4147 capsule, you have   
   > an acoustica measuring system with response from under 0.01 Hz   
   > to over 20 kHz within a 2 dB envelope.   
      
   Ahem, yes, they like their transducerspecs to meet or exceed exceed normal   
   semiconductor circuit specs ... O;-)   
      
     Kind regards   
      
     Peter Larsen   
      
   --- SoupGate-Win32 v1.05   
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