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#20
September 29th 06, 04:29 AM
posted to rec.radio.shortwave
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Cable Ohm Question
HFguy wrote:
m II wrote: craigm wrote: m II wrote: craigm wrote: You couldn't read the resistance with a multimeter, at least not in any practical way. But, a DC meter would read the characteristic impedance of an infinitely long transmission line. I'd like to try that, but my electronics dealer only stocks 500 foot lengths of coax. Will the numerous coax couplings needed to make an infinitely long chunk of cable ruin the validity of my meter readings? Mike, You should be quoting Frank, not me. Look closer at my post. I posted links that indicate what Frank wrote my be wrong. Read the material in the links and decide for yourself. (You would need a pile of cash to buy enough fittings, anyway.  )I mistakenly thought the double set of quotation marks would take care of the assignation. I should have been more judicious in my clipping. As for the fittings costing money, well....I was going to purchase only a few every weekend until the goal was met. How hard can it be? Only two couplings per roll of cable..shucks, I'll be done in no time. I read a quiz concerning infinity years ago. It may have been by Martin Gardner. The problem being that you own a hotel with an infinite number of rooms. They are ALL occupied. A stranger appears at the registry desk desperately needing a place to stay, You actually get them one of your hotel rooms, empty. How do you do it? mike http://en.wikipedia.org/wiki/Hilbert's_paradox_of_the_Grand_Hotel nice work. I found the following URL in room 324^1345 http://en.wikipedia.org/wiki/Hilbert...he_Grand_Hotel mike |
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