天线溃电点计算（Calculation of breakdown point of antenna）.doc

天线溃电点计算（Calculation of breakdown point of antenna） I make a little experience with 144M sticks A few days ago, I tried to make a 144 trillion stick antenna Data and graphs can be found everywhere Id like to say something about the tricks 1\ if there is no professional antenna instrument, there must be at least one standing wave table (accurate or not), as long as the standing wave size can be displayed 2\ familiarize yourself with your radio station for minimum power and frequency range 3\ radio must use less than 5 watts of power (not burned) 4\ would like to do 145 megabytes of antenna, do not calculate in accordance with 145 of the data, will regret it 5\ antenna material to be two or three meters rich (more insurance) 6\ takes the minimum and maximum transmit frequency of your radio station and divides it by 2. The frequency is the frequency of the antenna you want to do 7\ line to use 5 mm or 7 mm diameter (commonly known as bar 5-7), 75 Europe, 50 Europe The 8\ shortening factor is 0.98 9\ only do two 1/2 wavelengths, and all the other sections should be well done Adjustable tail 50 cm. The first standing wave 10\ every 20K measured a standing wave, the book out of the law, to find the center frequency point, measuring the length of the 1/2 wavelength just now, with the current central frequency point to calculate the real shortening factor, I dont need to talk about the rest. Everybody knows Im using a microphone wire, silver plated, with a reduction factor of 0.98. Theoretically, I should not buy a line that is shorter than its coefficient of shortening You can buy 7 millimeters of 75 Euro line (cheaper), mainly failure, do not feel bad, Length is short, 1 mm may be changed from 145 to 147, we must pay attention to size Never adjust the antenna parts that have already been made while standing the standing wave, There is a short note route of the standing wave method, if not according to his method, and core core method, leather middle string into the small t