Topband: Low band noise

[Bruce]

Thank you for those who emailed information. They basically thought the larger windmill arrays did not generate much noise. One test, checking all bands, was from a mobile K3 with a 9 foot whip antenna.  Unless the whip was loaded to 1.8 Mhz it may not pick up much noise at one mile. The most probable windmill installation noise source is the inverter.

Smaller home/farm  1 phase  type may give off more wideband noise. Some are using transformer-less inverters.

Noise is ever increasing in many areas. There is a need to monitor noise sources, and installing more directive receiving antennas.     

http://www.solacity.com/connections.htm

Watch the inverter video for more info. Highly informative.
http://www.power-one.com/renewable-energy/products/solar/string-inverters/aurora-uno-single-phase/pvi-30363842-north-america/series


I have no affiliation with any of the companies.
73-Bruce-K1FZ 


Getting noise from my NW direction. Does not seem to be local. Started wondering what, at distance,  could be causing it. At times it seems to have a rhythm like a motor.

There are a lot of power generating wind mills showing up.  Checking through Google, they generate DC and convert to  3 phase AC it with an inverter. The frequency and phase of the inverter is controlled with a sample from the power grid. 

Bruce-K1FZ
www.qsl.net/k1fz/beveragenotes.html
www.qsl.net/k1fz/pennantnotes.html