As promised, here are the photos illustrating the method I use to secure the Marco Polo tracker tag to my machine. It won't win any awards for looks but it's strong, secure and it works.
This is the component I modified to carry the Marco Polo Tracker tag.
In Australia it called an electrical conduit tee junction and costs around $2 from any electrical wholesaler.
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The female conduit lugs have been removed leaving holes that are flush with the body of the junction. (A hacksaw or angle grinder with a fine cutting blade make short work of this.) Then file off any rough edges.
A small modification is also required to the inside so as the tag can be inserted. The photo shows where I’ve filed the plastic away, (none too neatly), to achieve this. The black strip is the cable tie used to hold the tag “housing” to the machine.
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The tee junction cover needs a hole drilled in it as shown, to allow the antenna wire to protrude.
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This photo shows the tag in place with the “housing” held in position with a heavy duty cable tie.
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With the tag in position, the housing “lid” can now be screwed down.
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With the tag in place, the cover screwed down and the cable tie inserted thru the housing and fastened, the assembly in complete. (Don’t forget to activate the tag of course!)
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The first of the final two photos shows the completed housing with tag in place and in case you’re wondering, your bird will still fit into it’s case (see last photo), with slight pressure against the cable tie by pushing against the tag housing to clear the styrofoam.
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I’ve done dozens of flights using this configuration with no mishaps to either machine or tag. Good luck!