Is this an appropriate place to cry about blowing up the 180° phasing cable on your Yagi's T match? It turns out sealing the ends of this cable with silicone, was appropriate for 12 years, but not 13! Corrosion between the Silicon and the aluminum or copper metals, caused this seal to fail over time.
Once moisture got in, the Corona Arc turned the connection into a 0.1 ohm short. Silicone may not be the long-term solution for these applications. To make a long story short, I am now experimenting with a marine grade sealant by 3M called 5200. I'm told it already passes the microwave oven test, meaning it is a good insulator to RF.
Once moisture got in, the Corona Arc turned the connection into a 0.1 ohm short. Silicone may not be the long-term solution for these applications. To make a long story short, I am now experimenting with a marine grade sealant by 3M called 5200. I'm told it already passes the microwave oven test, meaning it is a good insulator to RF.
