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DIY Marker beacon antenna

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mrspudandcompany(at)veriz
Guest

Posted: Wed Jan 08, 2014 9:07 am Post subject: DIY Marker beacon antenna

I have a wooden airplane in which I will be installing a Marker beacon 

receiver.



My question is:  Is it relatively simple to fabricate an antenna, or should 

I consider purchasing one?



I assume it can be put on the inside of the airframe without a significant 

loss of signal strength.



Roger

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mrspudandcompany(at)veriz
Guest

Posted: Wed Jan 08, 2014 10:08 am Post subject: DIY Marker beacon antenna

 	  Quote: 	
		   I have a wooden airplane in which I will be installing a Marker beacon 

 receiver.



 My question is:  Is it relatively simple to fabricate an antenna, or 

 should I consider purchasing one?



 I assume it can be put on the inside of the airframe without a significant 

 loss of signal strength.


	




        After posting the above, I searched the archives and found lots of 

info

        to answer my question.



        Looks like I will run a coax to a convenient place and then a 40"

        piece of wire for the antenna, or just strip the braid off the last 

40"

        of the coax and attach it inside the fuselage.



        Marker beacons will most likely disappear in the near future anyway.

        Just thought that since I already have the receiver, there is no 

reason

        not to put it to use.



        Roger 

--



Do you have a slow PC? Try a Free scan http://www.spamfighter.com/SLOW-PCfighter?cid=sigen

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tim2542(at)sbcglobal.net
Guest

Posted: Wed Jan 08, 2014 10:52 am Post subject: DIY Marker beacon antenna

Yeah I started to answer your question but I'm not an avionics expert, but have a bit of experience. So my input is a marker beacon will work off a wet noodle, you can actually just put a rubber duck or length of wire out the back and it will receive. 

They are rather large if made resonant, but if you want I can get you the dimension for a foil antenna if that will work. 

And your right, already an approach certified GPS will serve for those approaches that use a MB for a fix.

Tim

 	  Quote: 	
		   On Jan 8, 2014, at 10:06 AM, "R. curtis" <mrspudandcompany(at)verizon.net> wrote:

> I have a wooden airplane in which I will be installing a Marker beacon receiver.

> 

> My question is:  Is it relatively simple to fabricate an antenna, or should I consider purchasing one?

> 

> I assume it can be put on the inside of the airframe without a significant loss of signal strength.

       After posting the above, I searched the archives and found lots of info

       to answer my question.

       Looks like I will run a coax to a convenient place and then a 40"

       piece of wire for the antenna, or just strip the braid off the last 40"

       of the coax and attach it inside the fuselage.

       Marker beacons will most likely disappear in the near future anyway.

       Just thought that since I already have the receiver, there is no reason

       not to put it to use.

       Roger 

 --

 Do you have a slow PC? Try a Free scan http://www.spamfighter.com/SLOW-PCfighter?cid=sigen

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BobsV35B(at)aol.com
Guest

Posted: Wed Jan 08, 2014 11:55 am Post subject: DIY Marker beacon antenna

Good Afternoon Tim,  

  

 If I may be so bold, are you sure you wish to go to the trouble of  installing a Marker Beacon receiver and an Antenna?

  

 The Marker Beacon is no longer a required piece of equipment for an ILS  approach. There are a few marker beacons that are still used as step down fixes  for a few Non Precision Approaches, but they are disappearing rapidly. A very  few Category II and Category III approaches are still using them, but that is  about it. Those that are still in service are rapidly being replaced with other  style fixes. I would imagine that if you are planning IFR flight, you will have  an IFR approved GPS installed. I know of no marker beacon sites other than the  ones for Category II and II that are not also a designated waypoint. For those,  the GPS can be used in lieu of the Marker Beacon.

  

 No big deal, but you could save fraction of an ounce or so and little bit  of labor by not installing the Marker Beacon at all.

  

 Happy Skies,

  

 Old Bob

 Do Not Archive

  In a message dated 1/8/2014 1:20:07 P.M. Central Standard Time,  tim2542(at)sbcglobal.net writes:

 [quote]-->    AeroElectric-List message posted by: Tim Andres    <tim2542(at)sbcglobal.net>



Yeah I started to answer your question    but I'm not an avionics expert, but have a bit of experience. So my input is a    marker beacon will work off a wet noodle, you can actually just put a rubber    duck or length of wire out the back and it will receive. 

 	  Quote: 	
		    	


  	  Quote: 	
		  [b]

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mrspudandcompany(at)veriz
Guest

Posted: Wed Jan 08, 2014 3:23 pm Post subject: DIY Marker beacon antenna

[quote]   If I may be so bold, are you sure you wish to go to the trouble of    installing a Marker Beacon receiver and an Antenna?

    

    

    	  Quote: 	
		       The trouble of installing the Marker Beacon Receiver is minimal.       It is already installed in my audio panel, so the only effort is to add the      antenna.  Bob N. in an old post said a "wet string" would work as an      antenna, but I discarded that as too much trouble to keep the string moist      on an approach.

      

     I am only installing it because it is there and can be activated with      very little effort and could possibly be used as a backup indicator.       If it wasn't there, I would NOT go out and purchase one. 

      

     Roger

	
[b]

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