Dave, I can vouch for that statement. I do use the Caddock Thick Film 50 ohm resistors as precision dummy loads. They are flat up to 500 MHz with good mounting using no leads. They MUST be mounted on a heat sink, and yes, they will go open in a flash if the rated power is exceeded (don't bother to ask me how I know that).
So, recommending them for a K3 application may not be the best, but if you want an inexpensive dummy load, got a heat sink from a defunct computer CPU cooling device and one of those resistors and connect it to a BNC or UHF jack using zero length leads - but don't exceed its power rating (they are available up to 100 watts). 73, Don W3FPR David Gilbert wrote: > 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 > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
