AeroElectric-List Digest Archive

Thu 10/31/19


Total Messages Posted: 3



Today's Message Index:
----------------------
 
     1. 12:46 PM - Re: Glastar Dipole comm antennae behind doors (LouNathanson)
     2. 12:54 PM - ADS-B for combined satellite/ground using a dipole (LouNathanson)
     3. 01:30 PM - ADS-B for combined satellite/ground using a dipole (LouNathanson)
 
 
 


Message 1



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    Time: 12:46:58 PM PST US
    Subject: Re: Glastar Dipole comm antennae behind doors
    From: "LouNathanson" <Lou@CometRider.com>
          
      
      Thanks, Bob!  It had never occurred to me to step back and see the obvious:  that
      that front antenna was simply peaking well below the av band.  I will experiment
      with trimming it
      
      I will also look forward to your balun.  
      
      Thanks,
      -Lou
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=492066#492066
      
      


    Message 2

    

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    Time: 12:54:44 PM PST US
    Subject: ADS-B for combined satellite/ground using a dipole
    From: "LouNathanson" <Lou@CometRider.com>
          
      
      I am currently equipped with ADS-B meeting the 2020 US mandate.  However, I do
      fly frequently in Canada, and am starting to thing about getting ahead of the
      game for that.
      
      The currently available "diversity" solutions (which alternately ping a top and
      bottom-mounted antenna) are pretty expensive, and would require ditching what
      I have now.
      
      So...I've been wondering if, given that I have a composite airframe, I could mount
      a vertical dipole, tuned for 1090 MHz in the tail cone, and have it work with
      both satellite and ground ADS-B stations.  
      
      I do understand that I might be cutting the power available to ping either type
      of station by half -- or arguably a bit better than that, since the dipole might
      be more efficient than a quarter-wave with a limited ground plane. 
      
      Thoughts?
      
      Thanks,
      -Lou
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=492067#492067
      
      


    Message 3

    

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    Time: 01:30:39 PM PST US
    Subject: ADS-B for combined satellite/ground using a dipole
    From: "LouNathanson" <Lou@CometRider.com>
          
      
      I am currently equipped with ADS-B meeting the 2020 US mandate.  However, I do
      fly frequently in Canada, and am starting to thing about getting ahead of the
      game for that.
      
      The currently available "diversity" solutions (which alternately ping a top and
      bottom-mounted antenna) are pretty expensive, and would require ditching what
      I have now.
      
      So...I've been wondering if, given that I have a composite airframe, I could mount
      a vertical dipole, tuned for 1090 MHz in the tail cone, and have it work with
      both satellite and ground ADS-B stations.  
      
      I do understand that I might be cutting the power available to ping either type
      of station by half -- or arguably a bit better than that, since the dipole might
      be more efficient than a quarter-wave with a limited ground plane. 
      
      Thoughts?
      
      Thanks,
      -Lou
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=492069#492069
      
      

    

    


    

    

    

    

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