Here is a nifty way to re-purpose a useless low pass filter into a useful 50 ohm RF dummy load. Depending on the low pass cabinet and whatever resistors you have on hand a very powerful device can be constructed. Check out the current prices of dummy loads and you will be shocked! Presented here, a cheaper choice. Remember, this is just a Tech Tip, you can construct this device as you see fit. I am just recommending this method. Hope you like.