Data Entry Information

Enter DB Loss of Cable Per 100 Ft. At The Desired Operating Frequency?
   This value is typically obtained from the manufacturers data sheet or catalog. Most manufacturers list the cable loss at several frequencies in decibels loss per 100 feet or 100 meters. Other frequencies can usually be interpolated from the manufacturers printed data.

Enter Length of Cable in Feet?
   This is simply the length of the cable measured in feet

Enter Measured Power into Cable in Watts?
   This is the actual measured power going into the coaxial cable. This value is usually obtained by inserting an inline wattmeter as close to the transmitter output connector as possible. Sometimes it might be necessary to measure the transmitter power with only the inline wattmeter and a dummy load first to extablish a good reference.

Enter Measured Power out of Cable in Watts?
   This is the actual power feeding the load at the far end of the coaxial cable. This value is usually obtained by inserting a wattmeter between the cable and the antenna or load. Sometimes it might be necessary to substitute a known good dummy load for the antenna to obtain a useful reading.