I'm building a really simple resistive load for power supply noise measurements. One of my requirements is that all connections between power supply, load, and measuring device be shielded to avoid noise pickup. My plan was to fasten a wirewound resistor to the inside of a diecast enclosure and use a panel-mount SMA connector for the power supply and measuring device connections (I was going to use an SMA tee to allow connections to both). Because I'm not too worried about adding inductance to the load (it's already a wirewound resistor after all), I was going to solder one side of the resistor to a solder lug lock washer (something like
https://www.digikey.com/en/products/detail/keystone-electronics/7316/316689 but of the appropriate hole diameter). The other side, of course, would solder to the SMA center pin.
However, my searches haven't turned up much, except for this:
https://www.aliexpress.us/item/3256803753366565.html. I don't really want to wait that long for something though.
I don't really want to deal with coaxial cable on the inside. The pig tail would be pretty long to reach both ends of the resistor, and it just seems unnecessary.
Another option is I could try to solder a wire to the inside of the enclosure right next to the coaxial connector, but IIRC people have told me soldering to aluminum isn't easy.
Or, I could just wrap wire around the threaded portion of the SMA connector on the inside of the enclosure and just fasten a nut on top of it, but that seems like it could come out.
Anyone know of something I could use? Or, is there a better way to do this?