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Title: Power tube disposal Post by: K8DI on September 15, 2023, 03:37:41 PM What’s the right way to dispose of dud/bad power tubes with thoriated tungsten filaments?
I was gifted a big box full of used 4PR400C tubes that were maintenance pulls from a laser metal cutting machine at some long-closed factory. Half of them have very low emission (3kV on the plate, no bias, draws 150mA). Some are shorted. A few have some life left, and I’ll keep those. But what do I do with the bad ones? Tossing them in the trash seems irresponsible… Ed Title: Re: Power tube disposal Post by: KL7OF on September 15, 2023, 05:16:24 PM "Thoriated tungsten TIG welding electrodes are not considered dangerous and may be disposed of in the trash"
This refers to 2% and 3% Thoriated electrodes that range in diameter from .030 to .125. I believe there are larger diameters as well. I haven't found any recommendations for tube disposal Title: Re: Power tube disposal Post by: W7TFO on September 15, 2023, 06:19:57 PM I take all my 4-400 or 4-1000 no emission duds to a hamfest, and sell them for $2.00 as desk lamps.
Keeps them out of the trash... It has bought me lots of coffee & donuts over the years. 73DG Title: Re: Power tube disposal Post by: Pete, WA2CWA on September 15, 2023, 06:49:33 PM Target Practice AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
"Specialty" lamp mounted in wood base Snow Globe Random color blinking light show display "Hammer Time" |