REFLECTOR: Cockpit Voice Recorder

[Laurence Coen]

Jack,

Yes you can  That is exactly what I did.  The unit that I have has an input 
for an electret mike and required a couple of resistors to attenuate the 
audio to the proper level.  The resistors fit inside a standard audio jack. 
A mini plug and some shielded audio wire and you're done.

Larry Coen
N136LC
  ----- Original Message ----- 
  From: Jack Sheehan
  To: Velocity Aircraft Owners and Builders list
  Sent: Wednesday, January 24, 2007 10:42 AM
  Subject: Re: REFLECTOR: Cockpit Voice Recorder


  Ron,
  Could you buy or make an adapter and just plug it into a passenger 
headphone jack?
  Jack
  N55XL
  Race 55

   At 04:45 PM 1/23/2007, you wrote:

    Several months back, someone suggested using a digital recorder as a 
CVR.

    I found a fantastic value in a 2 GB MP3 player that also includes an 
audio line in for hours worth of recording.

    I had a cheap one that I found at CVS last year that really didn't work 
very well, so I decided to do a search and see if I could find a better one. 
I found this outstanding Transcend 520 at Tiger Direct for $59.95.  Besides 
playing 2 mb worth of Jimmy Buffett it will also record hours worth of 
audio.  (I have an audio input jack that ties into my intercom system).

    http://www.transcendusa.com/Products/ModDetail.asp?ModNo1

    http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo%29864&CatId$75

    Oh, did I mention, it also has a great FM tuner and doubles as a 2 mb 
Flash Drive too!!! 15 hours on a AAA battery.

    I installed a 1/8" stereo jack and wired it to my intercom head set jack 
using a 100 ohm resistor.  You will want to wire the headphone into both 
sides of the 1/8 jack so that both tracks will be recorded into the 
Transcend.  It is easy to set up and record hours worth of CVR, then 
download to your PC for later review using a USB cable. Everything that you 
hear in your headset is recorded with great quality - even at the lowest bit 
rate settings. Great way to record performance data - data is accurately 
time stamped too,

    Ronnie Brown


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