Somthing Weird Just Happened

I was sitting at home in New York City today, watching television with my father. I don't have cable so I used an old FM antenna, the wire type that comes with a stereo, and made it pick up a few tv channels. We were watching channel 25, which is a public channel like PBS, when a helicopter began flying over my building.

That in itself isn't too weird since helicopters fly down the west side all the time to land at the heliport a little ways down. However, as the helicopter got closer the signal on the television got worse. I'm sure it was directly related as the closer it got the worse the signal became. When the helicopter was directly over my building the signal was completely messed up, it was making vertical S shaped waves that moved down the screen. As the the helicopter began to get further away, heading south, the signal became that much better until I couldn't hear the helicopter anymore and the signal was perfect again.

Now, I'm not going to jump to any conclusions but even my father though it was weird and noticed it without my saying anything. This has never happened before as far as I can remember even though helicopters fly by here all the time. I do, however, see some weird things such as the FujiFilm/NYPD surveillance blimp (Yes, the same one from that Alex Jones video).

Am I unaware of a normal dirsturbance that can be caused by a helicopter or is this something a bit more mysterious? Could it have been an NYPD surveillance chopper maybe operating a FLIR or radar device? I doubt it was a FLIR now that I think about it as it was 2:50 pm and it's only slightly overcast.

Before I jump to conclusions I need to know if anyone else knows of somthing normal that could have caused this.

could just be electomagnetic or physical interfence from the chopper, or pure coincidence!

The chopper could have been using a high-powered radio device, or be providing "downlinks" for plenty of services other than government (tv camera links for live broadcasts, eye in the sky radio reports etc)

Best bet is if you see it again to get the registration off the tail of the chopper, that way you can find out who its registered too.

I figured it was some form of equipment, I was just wondering if it was anything anyone knew about. I guess it would have to be pretty strong to effect my tv signals from as far away as it did.

I couldn't get the number since I can't even really see the sky out of that window thanks to Verizon. The joys of living in NY, I have a wonderful view of the backside of a utility building.

not really, youd be amazed what a little rf will do,
a 4 watt CB transmitter can knock the pictures off a streets worth of tv sets!

Any electrical device operating at or near the frequency that your TV was picking up could easily cause interference. Or the Helicopter could have just been blocking the signal.