Saturday, 21 November 2015

Ham Radio & PLT devices

Over the past few years and again recently I have heard a lot of chatter regarding PLT interference. Especially with Ham radio and shortwave bands. These devices plug into a power wall socket in your house and allow you to create a wired network via your mains wiring in the property. It’s a perfect solution for properties that cannot send a wireless signal from one end to another (Just like mine).  It does however have a draw back. In creating a wired network these PLT devices create a lot of mains born interference and this can effectively block out any amateur radio bands.

In recent stories I have heard audio samples and read stories of how these devices can create S9+20db of noise. Thus reducing the amateur bands unusable.

I wanted to see for myself the effect of using PLT devices in my property. So I visited PC World and purchased 2 devices from NetGear. The Powerline 500 promise 500Mbit/s and this would solve a huge problem I have in my home right now, but feared for what it would do to my beloved radio.

The results were interesting and nothing what I expected. You can see my full test in the video below – but for a spoiler alert keep reading....


The results were - It did nothing. It had zero effect on any of the bands I use at home. After the video I monitored the shortwave bands and tried other frequencies. Again, nothing.  I tried it while the network was busy - I streamed 4K films and copied a 25Gb file. Guess what. Nothing.

The moral ? – Don’t believe the hype.