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#1
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Fred:
"How much string was on ball of string at the beginning" --MINUS-- "How much string is on the ball when you have cut the string off you need" = L(length of string) gessh! amateurs really should know that formula! tongue-in-cheek I just hate having to unwind the ball, measure the string, then do it again after cutting! John "Fred W4JLE" wrote in message ... How long is a piece of string? "redhat" wrote in message oups.com... what is the electrical length of a transmission line in degree? regards |
#2
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The correct answer is "No, How Long is a Chinaman"
"John Smith" wrote in message news ![]() Fred: "How much string was on ball of string at the beginning" --MINUS-- "How much string is on the ball when you have cut the string off you need" = L(length of string) gessh! amateurs really should know that formula! tongue-in-cheek I just hate having to unwind the ball, measure the string, then do it again after cutting! John "Fred W4JLE" wrote in message ... How long is a piece of string? "redhat" wrote in message oups.com... what is the electrical length of a transmission line in degree? regards |
#3
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On Mon, 4 Jul 2005 22:15:24 -0400, "Fred W4JLE"
wrote: The correct answer is "No, How Long is a Chinaman" Yes, his is. |
#4
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Fred:
I should have pointed out: It is easier and quicker to work with small balls, than large balls--of string. The women seem especially good when it comes to this, I am studying them closely to see why. dirty-old-man-type-grin John "Fred W4JLE" wrote in message ... How long is a piece of string? "redhat" wrote in message oups.com... what is the electrical length of a transmission line in degree? regards |
#5
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Take the line outside at night where you can hear crickets chirp.
Count the number of times it chirps in 15 seconds, and add 40. Thats the degrees. (temperature). http://www.srh.noaa.gov/elp/wxcalc/f...cketChirp.html Now measure the transmission line, Then get a copy of the ARRL Antenna Handbook or the ARRL Amateur Radio handbook, and find out why you asked the wrong question. "redhat" wrote in message oups.com... what is the electrical length of a transmission line in degree? regards |
#6
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![]() "Hal Rosser" wrote in message .. . Take the line outside at night where you can hear crickets chirp. Count the number of times it chirps in 15 seconds, and add 40. Thats the degrees. (temperature). http://www.srh.noaa.gov/elp/wxcalc/f...cketChirp.html Ummmm..... You have to specify the species of cricket. Each species has a characteristic chirp factor. Also are your degrees F, C or K? |
#7
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![]() Ummmm..... You have to specify the species of cricket. Each species has a characteristic chirp factor. Also are your degrees F, C or K? This is from http://www.noblenet.org/reference/crickets.htm The formula for this is to count the number of chirps in 15 seconds and add 39 to calculate the temperature (degrees Farenheit.) If there are 30 chirps in 15 seconds, the temperature should be about 69 degrees F. This formula is said to be accurate within one degree. A variation is to count the chirps in 13 seconds, and add 40. Sources: "Cricket thermometers," Field & Stream, July 1993, Vol. 98 Issue 3, p21. and from http://www.almanac.com/outdoors/crickets.php we have this: To convert cricket chirps to degrees Fahrenheit, count number of chirps in 14 seconds then add 40 to get temperature. Example: 30 chirps + 40 = 70° F To convert cricket chirps to degrees Celsius, count number of chirps in 25 seconds, divide by 3, then add 4 to get temperature. Example: 48 chirps /(divided by) 3 + 4 = 20° C =========== there's apparently a small descrepancy (1 degree) in the sources. |
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