Dring Dring... ding ding ding damg
Sometimes I saw (if I'm not slacky) VOR xyz out of service on Fir Notams, did anyone seen this?
Magic electrons. When the puck cracks, they all leak out and then the antenna becomes unreceptive.
Puck cracks, moisture and dirt seeps in creating a path to ground. See above.
Yes, that is my understanding as the older antennas, such as on many pipers with an external balun, the signal is radiated to the center conductor via the small unshielded loop at the antenna end and via the open end of the balun end? So, there is not much that can go wrong with the dipole antenna unless it is cracked or the whisker is damaged as there are no "electronics' inside older Piper style antennas such as the Rami AV-12Most likely a "balun" as stated here:
The "cat whisker" type of VOR receive antenna is a dipole, i.e. has two elements and no ground. As such it is considered BALanced. The coaxial cable used to connect it to the receiver is UNbalanced since the outer conductor is connected to ground. For best results a balun should be used to convert from one to the other.
