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"Chuck Harris" wrote in message ... Ed Price wrote: Designing and building a product to provide many years of use, and then capable of being repaired without access to unique components and/or exotic service equipment, is a concept so rare as to be thought a scam. Ed wb6wsn Imagine your cell phone if it was designed to be repaired, and used only common components. It would be the size of a briefcase. Do you think cell phones would be popular if they had to be briefcase sized? What about spectrum analyzers that needed to be contained in several 6 foot high rack cabinets? Is the world better or worse now that a 100MHz oscilloscope can be made the size of a paper back book? -Chuck, WA3UQV We were talking about repair and service equipment, not consumer items. A consumer item is expected to have a short life-cycle, and repairability is often not a concern. I never saw "multi-six-foot-rack analyzers"; the oldest & biggest I can recall were Singer FIM analyzers, which were about 24" wide by 30" tall and deep, and took four guys to move them (and the plug-in RF heads were a one-man lift!). OTOH, everything inside was reachable and easily repairable. If that 100 MHz scope can be built to have a reasonable cost to lifetime ratio, then it could be considered a consumer item, and a non-repairable investment. But to me, if I have to pay $10k or more for a piece of test equipment, it had better last quite a few years and allow me to do re-calibration and even moderately severe repair. Ed |
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