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Richard Harrison wrote:
Gene Fuller wrote: "There is no problem with Terman`s words, but I believe you are missing his intention." I parsed Terman`s words carefully trying to avoid misinterpretation. There is a RCA FM Coverage Calculator (special slide rule) pictured and described on the internet. Text accompanies the rule. This text says the range of the rule is for a radius of urban coverage of 1000 microvolts per meter and a radius of rural coverage of 50 microvolts per meter. They obviously anticipate a much higher urban noise level than found in rural areas. The rule has distance scales of 4 to 100 miles, and 16 to 143 miles.. The text says: "If you hold up 1 meter of wire at exactly the right angle, this is exactly how many millionths of a volt are generated between its ends. And just how are you going to measure that voltage without getting an opposite voltage in your voltmeter leads. Or alternatively how can you present that voltage at the input to a receiver? You can't. So the above tells us zip about the question Reg asked. Roy answered the question correctly and you haven't even attempted it. Why is that? Andy |
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