Avionics-List Digest Archive

Mon 09/14/09


Total Messages Posted: 4



Today's Message Index:
----------------------
 
     1. 12:24 AM - Re: Radio Noise (jetboy)
     2. 03:57 AM - Re: Need KT-70 pinout and instruction manual. (n4291p)
     3. 04:16 AM - Re: Re: Radio Noise (Larry Florman)
     4. 10:15 AM - Re: Re: Radio Noise (Doug McNutt)
 
 
 


Message 1



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    Time: 12:24:56 AM PST US
    Subject: Re: Radio Noise
    From: "jetboy" <sanson.r@xtra.co.nz>
          
      
      Have you fitted the large (approx. 25,000 uF) capacitor to the regulator DC output?
      This is covered in some of the Rotax info and installation manuals for some
      of the homebuilt market radios. best to use a 105 degree C rated capacitor
      and not in the cabin area.
      Ralph
      
      --------
      Ralph - CH701 / 2200a
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=262894#262894
      
      


    Message 2

    

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    Time: 03:57:43 AM PST US
    Subject: Re: Need KT-70 pinout and instruction manual.
    From: "n4291p" <n4291p@hotmail.com>
          
      
      Hello Don,
      
      I to need a pin out and operating manual for the KT-70 mode S transponder and do
      you know how to program the aircraft 8 digit codes 
      
      Thanks for your help. 
      Jan Prikkel jr
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=262899#262899
      
      


    Message 3

    

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    Time: 04:16:30 AM PST US
    From: Larry Florman <larryflo@prodigy.net>
    Subject: Re: Radio Noise
          
      
      Yes, There is a 22,000 installed.
      
      Sent from my iPhone
      
      On Sep 14, 2009, at 3:21 AM, "jetboy" <sanson.r@xtra.co.nz> wrote:
      
      
      Have you fitted the large (approx. 25,000 uF) capacitor to the regulator DC output?
      This is covered in some of the Rotax info and installation manuals for some
      of the homebuilt market radios. best to use a 105 degree C rated capacitor
      and not in the cabin area.
      Ralph
      
      --------
      Ralph - CH701 / 2200a
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=262894#262894
      
      


    Message 4

    

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    Time: 10:15:19 AM PST US
    From: Doug McNutt <douglist@macnauchtan.com>
    Subject: Re: Radio Noise
          
      
      At 04:13 -0700 9/14/09, Larry Florman wrote:
      >Yes, There is a 22,000 installed.
      >
      >On Sep 14, 2009, at 3:21 AM, "jetboy" <sanson.r@xtra.co.nz> wrote:
      >Have you fitted the large (approx. 25,000 uF) capacitor to the regulator DC output?
      
      If the noise can be described as a whine you may have a bad diode in the alternator.
      I donno about the Rotax but perhaps it has diodes mounted externally?
      
      One test is to see if the pitch of the whine changes  with engine speed. Another
      is an oscilloscope connected to the power bus.
      
      -- 
      --> So are we going to celebrate the start of a new decade at the end of this year?
      Or do the tens start at in January 2011? <--
      
      

    

    


    

    

    

    

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