FozzTexxDon't have an official #FujiNet CoCo cartridge? No problem! Just use the official #FujiNet RS232 cartridge and a CoCoEPROMpak installed inside a #3DPrinted CoCo cartridge instead!
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Mark J. Blair
@NF6X@oldbytes.space
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A feral engineer lurking near Riverside, CA, USA
@revengeday @syndicate Ok, fine, I'll impulse-buy it.
Oh, neat. After leaving the unit turned on for a while, it began emitting bursts of clicks with increasing frequency. There's a faint orange glow inside the tube. It still doesn't respond to known-spicy items which it previously had strong opinions about.
@kimmy Needs a trigger warning spoiler! š¤£
I see some similar looking GM tubes on eBay from assorted eastern European countries, but priced around 1/3 the cost of a new mid-range RadiaCode scintillation detector.
I don't have the gumption to debug the Geiger counter more this weekend (I'm in the middle of a cold), but I think the most reasonable next step would be to remove the GM tube and see if it shows any sensitivity in a kludgy bench setup with my old HP 711A 0-500VDC power supply.
I'm also tempted to use my counter's failure as an excuse to get one of those newfangled lowish-cost scintillation detectors which can do gamma ray spectroscopy, like one of the RadiaCode units or the new RadView AlphaHound AB+G. So tempting...
I don't suppose any of you hoopy froods know anything about debugging Geiger counters?
My #Radiascan701A #GeigerCounter died a while back. It acts normally, except it is insensitive to known-spicy objects. I finally got around to breaking the warranty sticker to peek inside. I measure around 230VDC across the GM tube, and it emitted a click when I touched the DMM leads to the contacts. Maybe the electronics are still working, but the tube lost vacuum?
@fozztexx Oh wow, I forgot I made the 3D model!