recommended noise reduction device

@James Del Principe

The key to RF noise reduction is to get rid of it before the antenna port as that is the point the RF signal we are trying to receive is already corrupted. We need to eliminate that corruption. This should be a priority.

Doing it after the antenna port means you are removing some of the signal that is part of the signal you want to hear. Is this what we really want?

I can honestly say that about 80% of the noise we hear is on our own property. Not all, but a lot. Enough to make a huge operational difference. I came up with this number from members of our own contest club that all had a hard look at their own how. Just about ever switching power supply in a house (mostly chargers) are the enemy. There is just myself and my wife in my house and I found 12 bad wall chargers, 1 CISCO 100mb POE commercial switch, one bad LED light bulb and 18 LED small decorative LED bulbs used to light the kitchen counter. That took my 80m noise from a very solid S9 to S6.

I found most of these by walking around the house with my Yaesu VX7R on some frequency (I can't remember now) in AM mode. It might have been 30Mhz or so (if it goes that low). You would be surprised what you find. Just hope it isn't the Refridgerator (as was the problem with a friend of mine). When he unplugged the fridge, the noise on 80M went from 10db over S9 to S5. That was an expensive fix for him as he not only had to find a new one but he also had to convince the XYL to buy a new one. That came out of his hobby budget.

73