Metal film resistors are notoriously fragile. They will typically meet their published dissipation specs just fine, but they go from being OK to being an open in a flash (literally) when overstressed. I personally would never use one in any application where the power they were expected to handle wasn't rigid controlled. Check with any industrial control manufacturer and you will hear the same story.
73, Dave AB7E juergen piezo wrote: > A 2nd option could also be a dummy load using one of those very cheap RF film > resistors. This would have to be mounted onto the case for a heatsink. > > John > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html