Finally, I have some time to post some basic information about my Audio Jack Hack. I have been working on this project for some time and have actually been using and abusing it for a while (broke my first one in Vallarta 3 months ago). I guess you can call it real world testing, but I have also done other testing on it.
The design has gone through various design iterations and improvements, but still only exists in "hacked" form. I actually plan on manufacturing come next year but for now I am working on more exciting designs. For now I will post pictures if my design and see what kind of feedback I get. This is one tough hack to do and I have ruined many antennas!
Antenna functionality is not affected, but I have also been experimenting with modifying the internals to get something better tuned for the 1900 MHZ spectrum. Also, the original jack still works and you can use the headphones on either jack for phone calls. Wired headset still works and will work on new jack with adapter.
Speakerphone use via powered speakers should work and I have a working prototype, but is does not quite fit in the antenna... yet!
Also, I have submitted a patent application to the United States Patent Office for this design.
I hope you guys like it!!!