The Polaroid camera for the Tek 'scope was pretty cool. And the comments about the Simpson 260 made me feel good about finding one at a recent hamfest, but I don't think mine is an extremely rare Model 2.
Finding Your Best Crystal Radio 'DX Diode' (Part 2)
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Readers may recall my summertime blog, "*Finding Your Best Crystal Radio
‘DX Diode'*". It described a theoretical method I tried in order to see
which o...
2 hours ago
Before storage scopes, scope cameras were used to capture one shot events. The Tek C 59 camera for 7000 series scopes was common, and I used one frequently in troubleshooting pressure spikes in hydraulic systems, where pressures were destroying O-rings in control valves. I used piezoelectric shock accelerometers designed for use in gun and cannon barrel testing to measure the peak pressures encountered in the hydraulic system, whereas a suitable material was found to withstand the system pressures.
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