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Stratux alternative ADS-B antennas?

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farmrjohn

Joined: 31 Dec 2018
Posts: 57

Posted: Wed Jan 02, 2019 12:42 pm Post subject: Stratux alternative ADS-B antennas?

Hi, new to the list.  I'm interested in a Stratux for ADS-B in but would prefer a less visible antenna array for the ADS-B.  Are there alternatives?  I'm planning on powering the unit via aircraft power/USB  cable and not using it as a portable.  

John

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farmrjohn

Joined: 31 Dec 2018
Posts: 57

Posted: Sat Jan 05, 2019 3:34 pm Post subject: Re: Stratux alternative ADS-B antennas?

I have received the components and assembled the Stratux. Is the reason it uses two separate antennas for the  two ADS-B frequencies because the computer board takes two USB receivers, one for each frequency. Some other integrated ADS-B in receivers can utilize a single antenna which can be remote.  Would that be due to different circuitry inside the unit?  It would be nice to get rid of the “rabbit ear” antennas I the cockpit. Any help/comments appreciated. John

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rick(at)beebe.org
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Posted: Sat Jan 05, 2019 9:27 pm Post subject: Stratux alternative ADS-B antennas?

Yes, there are two         different receivers in there, each with its own antenna. You         could use a tee to tie one antenna to both receivers I guess.         Personally I like that each receiver gets an antenna optimized         for its particular frequency. You can certainly remote mount the         two antennas. Open Flight Solutions sells a plastic holder with         a suction cup to hold them in a rear window, for instance. I've         also seen some 3D printed versions on, probably, thingiverse.     

The Stratux is built         on a Raspberry Pi single board computer and a couple software         defined radios. I'm pretty sure every other ADS-B receiver has         custom receiver and decoder circuitry inside it.

            

--Rick

          On 1/5/2019 6:34 PM, farmrjohn wrote:

     

      	  Quote: 	
		          	  Quote: 	
		  --> AeroElectric-List message posted by: "farmrjohn" <faithvineyard(at)yahoo.com> (faithvineyard(at)yahoo.com)



I have received the components and assembled the Stratux. Is the reason it uses two separate antennas for the  two ADS-B frequencies because the computer board takes two USB receivers, one for each frequency. Some other integrated ADS-B in receivers can utilize a single antenna which can be remote.  Would that be due to different circuitry inside the unit?  It would be nice to get rid of the â€œrabbit earâ€ antennas I the cockpit. Any help/comments appreciated. John





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farmrjohn

Joined: 31 Dec 2018
Posts: 57

Posted: Sun Jan 06, 2019 9:03 am Post subject: Re: Stratux alternative ADS-B antennas?

Thanks for the tip on the remote mount.  Now I'm also considering switching to the remote gps antenna.  That way the stratux could be mounted in the shade vs. in direct sunlight even though it has a built in fan.  John



 	  rick(at)beebe.org wrote: 	
		  Yes, there are two         different receivers in there, each with its own antenna. You         could use a tee to tie one antenna to both receivers I guess.         Personally I like that each receiver gets an antenna optimized         for its particular frequency. You can certainly remote mount the         two antennas. Open Flight Solutions sells a plastic holder with         a suction cup to hold them in a rear window, for instance. I've         also seen some 3D printed versions on, probably, thingiverse.     

The Stratux is built         on a Raspberry Pi single board computer and a couple software         defined radios. I'm pretty sure every other ADS-B receiver has         custom receiver and decoder circuitry inside it.

            

--Rick

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