[Lowfer] 2200meter noise, plasma tv?

Dexter McIntyre W4DEX dexter.mc at gmail.com
Sun Nov 28 11:21:52 EST 2010


Recently a noise has appeared on 2200 meters that I wonder if the source 
may be a new plasma tv in the area.  The primary signal I receive that 
generates noise over the 2200 meter band is about 125 kHz.  The noise 
extends up to about 138 kHz.  I've heard that plasma televisions 
generate a lot of broad band noise so this may be coming from another 
source, maybe a switching power supply?   My nearest neighbor is about 
800 feet away but I've heard the sets can be heard over a mile away.  
Retailers appear to be dumping plasma sets which makes me paranoid.

I've eliminated my house as being the source of this noise.


mp3 of the noise at 125kHz:  
http://www.w4dex.com/lf/temp/2200m_growler/125khz_growler.mp3

mp3 of the noise at 138kHz:  
http://www.w4dex.com/lf/temp/2200m_growler/138khz_growler.mp3

SDR-Radio screen shot showing the strongest signal at 125 kHz which 
extends up to 138 kHz:
http://www.w4dex.com/lf/temp/2200m_growler/2200meter_growler.jpg

Dex


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