Remember that your faulty headphones are inside a big faraday cage, and the nav antennas are outside.
I am not sure how much effect this has, but it's something to keep in mind.
I am not sure how much effect this has, but it's something to keep in mind.
Take an ILS (instrumental approach) frequency 108Mhz. Any piece of wire of around two feet (half dipole) can be a pretty effective antenna at that frequency. Say, headset cable + an output cascade of the amplifier self-excited at this frequency? Doesn't happen in real life, but still...