View Single Post
  #143   Report Post  
Old December 20th 05, 02:40 PM posted to rec.radio.amateur.antenna
Andy Cowley
 
Posts: n/a
Default Antenna reception theory

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