Residential 60Hz sound resonating off wall of house at telco messenger line 1

[wilber cox]

I'm attempting to identify a loud "possible 60Hz" sound at a residential house where the telco messenger cable is attached to the house. (see sound file attached) This sound is loud enough to be heard in the drive-way and in the house on windy days. Two telephone poles supply service to the house, power on the north side of the house where there is NO sound, and landline telephone from Verizon which is not connected to house wiring on the south side of the house. (this is the side of the house where the sound is coming from). The sound is definitely coming down the telco messenger cable appears to be mechanical in nature with a 60Hz component that I've recorded and analyzed using software (see screen shot attached). First Energy (power company) engineer believes it to be WIRE GALLOP. I've read that Wire gallop frequency is <3Hz and Aeolian Vibration frequency is up to 150Hz. But I find it hard to believe that either of these would match the frequency AND duration profile.

I believe the vibration is being manifested by a First Energy electrical issue or condition (natural or otherwise) from their 4K power feeder cable or other equipment, on or near the pole then vibrating down the telco pole though the telco messenger wire attached to the house.

If someone with power distribution experience could advise, it would be appreciated.

Facts:
1.) There is no electrical leakage at the telco lines, house aluminum siding, power service drop to the house, or supplying power service drop pole. (tested from First Energy engineer and myself)
2.) This sound does not emanate from First Energy's electrical service drop to the north side of the house
3.) Sound emanates only from the telcom side of the south side of house AND telcom supplying telephone pole (no power transformer at this pole)
4.) Telco messenger line has no slack and is possibly transferring more sound than normal from pole to house, (natural or otherwise).
5.) Verizon copper will not respond to this query.

Frequency analysis screen shot:

http://files.engineering.com/getfil...rom_telco_line_possible_60hz._red_makings.jpg

Sound file (LISTEN TO THE WHOLE WAV FILE, MORE SOUNDS TOWARD THE END):

http://files.engineering.com/getfil...high_voltage_nosie_coming_from_telco_wire.wav

Power service pole:

http://files.engineering.com/getfil...gy_power_service_pole_north_side_of_house.JPG

Telco service pole:

http://files.engineering.com/getfil...31&file=telco_drop_to_south_side_of_house.JPG

Telco drop to south side of house:

http://files.engineering.com/getfil...b7&file=Telco_drop_to_north_side_of_house.JPG

 

[Compositepro]

"This sound is loud enough to be heard in the drive-way and in the house on windy days."

If this is true, you have already ruled out an electrical cause. It is a resonance problem actuated by aerodynamics. Lower the cable tension by adding a turnbuckle where the cable attaches to the house. On hang some weights on the cable and experiment with their position.

 

[davidbeach]

Also, if electrical in nature you'd be seeing sharp spikes in the frequency analysis, not the weighted noise that you're showing. Mechanical noise driven by the power system would be at 120Hz and harmonics, not down at 60Hz. Transformer hum is at 120Hz, not 60Hz.

 

[wilber cox]

Thank you Compositepro, I'll try that.

 

[wilber cox]

Thank you for the advice Davidbeach, most appreciated.