Adirondack case guy
Well-known Member
I was sitting here by my compuker this morning with a cup of coffee. I mentioned that there was a helicopter coming. One of those big twin rotor ones. They have a distinct sound.
It is a real crisp clear morning here, 4F, light breeze 6-15mph and wind chill of -6. I kept looking out the window to see it. She said she couldn't hear anything where she was sitting., only 6' from me in her side of the ell cove. The sound persisted for a couple of mins. sometimes loud and other faint. I got up to look out the door to see if I could see it and the sound went away. WTF. I sat back down and sound was back again. Got the wifey to come to my chair and see if she could hear it. Whew!!!, she did, but neither of us knew what the noise was. as it had been 20 mins. that I had been hearing it.
FINALLY the bulb lit in my head. We have a big TV antenna mounted on the roof over the family room. When the wind speed got over 5mph up to about 12mph the sound was loud. Turns out that the wind blowing thru the antenna was causing it to vibrate, and the vibration was transferring down the mast to the roof mount. The ell cove created the perfect acoustics to make a sound like a helicopter out in the distance. Amassing what can happen when certain conditions are just wright.
Loren
PS- I have a Davis weather transmitter mounted on the roof also, so I could correlate the wind speed to the sound.
It is a real crisp clear morning here, 4F, light breeze 6-15mph and wind chill of -6. I kept looking out the window to see it. She said she couldn't hear anything where she was sitting., only 6' from me in her side of the ell cove. The sound persisted for a couple of mins. sometimes loud and other faint. I got up to look out the door to see if I could see it and the sound went away. WTF. I sat back down and sound was back again. Got the wifey to come to my chair and see if she could hear it. Whew!!!, she did, but neither of us knew what the noise was. as it had been 20 mins. that I had been hearing it.
FINALLY the bulb lit in my head. We have a big TV antenna mounted on the roof over the family room. When the wind speed got over 5mph up to about 12mph the sound was loud. Turns out that the wind blowing thru the antenna was causing it to vibrate, and the vibration was transferring down the mast to the roof mount. The ell cove created the perfect acoustics to make a sound like a helicopter out in the distance. Amassing what can happen when certain conditions are just wright.
Loren
PS- I have a Davis weather transmitter mounted on the roof also, so I could correlate the wind speed to the sound.