Dummy Load

My Uncle Andy gave me an old circuit board with a few 50 ohm terminators on it. I looked them up online.

I believe it will handle 40 watts up to 9 GHz. However, I don't know if I have the exact data sheet, so I'm not entirely sure.

It's almost impossible to remove the chip resistor from the board. (small blue square in the middle of the picture) I cut the board out around it and mounted the assembly to a large chunk of copper. The chunk of copper was left over from the 1296 amplifier project. A panel mount N connector was added for pumping RF into it. A few pieces of heat sink were added surrounding the load for good measure.

I haven't had a chance to heat up the copper yet. I have a 70 watt amplifier for 2304 that needs modified and a 40 watt amplifier for 3456 that needs tested. They will heat up that copper just fine.

The heavy piece of copper had rubber feet added to it. The weight of the copper will keep the load from being pulled off the bench by heavy connector cables.