Signal Levels of Loop Antennas for AM Home Transmitters
Signal Levels of Loop Antennas for AM Home Transmitters
Not only is the magnetic loop a popular receiving antenna for the AM bands (long-wave
and medium-wave in Europe, medium-wave in North America), it is also a good choice when
it comes to feeding the signal of a home transmitter (commonly known as "Heimsender"
or "Heimsenderlein" in the German language part of this forum) into an AM radio set
that only has a build-in AM antenna (loop or ferrite rod).
This paper is about calculating signal levels provided to AM receivers by home
transmitters powering a magnetic loop. It's specific goals are to
- provide the reader with ready to use formulas to calculate the equivalent
radio frequency signal level (in µV/m) provided to the receiver
- give the reader an idea of the typical output power needed by a home transmitter
- give estimates on possible interference with other nearby receivers and undesired
emission of electromagnetic radiation
- present a cost-efficient way to approximately measure radio frequency noise levels
in the AM bands
To thank the Author because you find the post helpful or well done.