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Wireless: Freespeak harmonics interfere with satellite equipment

Wireless: Freespeak harmonics interfere with satellite equipment

Apr 06, 2019


A FreeSpeak system in use in Brazil located at a glass-wall studio at the top of a building was found to cause interference with this particular satellite device:
ParabolicAntenna: Andrew 7,5 meters(diameter)Receptor:Tandberg TT1260.The satellite dish was on the roof of a building next door to the studio building but some levels below the glass studio...

In order to solve the problem, the customer introduced this bandpass filter in line with the aerials. Note that it is necessary to use gender adapters as the antennas use reverse SMA connectors.VBF-1945+Manufacturedby: Minicircuitshttp://www.minicircuits.com/pages/npa/VBF-1945+_NPA.pdf

The gender adapters can be obtained from Mouser:
Models 132171 RP           132171RP-10 http://www.mouser.com/Search/ProductDetail.aspx?qs=LgeqI7%252b1o3WPK66YDDZu3g%3D%3D

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