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A little expert help here...

usafhaynes1
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usafhaynes1 Enthusiast

usafhaynes1

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I do have an ADF wire antenna on top that I'm about to remove since the airplane no longer has an ADF.  Can anyone confirm it's the second part of the ADF antenna?

I have two solid com antenna's, gps antenna, elt antenna on top.  transponder antenna on bottom and this monstrosity.  I do have a LORAN that is inop and not sure which antenna it's connected to.  I'll be removing the LORAN when I'm ready to install a DME.

OR75 Veteran

OR75

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it is a Loran antenna

 

looks very similar to a CI-122 Loran antenna

 

Best way to confirm is when you remove it, the part number will be writen somewhere near the coax connector.

usafhaynes1 Enthusiast

usafhaynes1

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Understood...my plane is in mx hangar until tomorrow (waiting 72 hours for glue to dry on a newly installed fuel sump that was leaking, they basically resealed left tank after install).  As soon as I have access, I will  take better pictures and post them for an accurate assessment.  My hope is that I can remove the object if it's from the Loran.

Jerry 5TJ Grand Master

Jerry 5TJ

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Yes, it is a 75 MHz Marker Beacon receiver antenna.  To verify:  Measure the length starting from the forward end at the fuselage, around the bend and to the back of the horizontal element.    It will be about a quarter wavelength at 75 MHz, which happens to be exactly one meter in free space.   In English terms, about 39 inches.

 

The smaller boat-hull shaped Marker Beacon antennas are more common now.  Search Ebay and you'll find a bunch of 'em. 

 

Here's a picture of the old style antenna without the airplane:

 

av-533.jpg

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