CHAPTER 14Receiving Antennas for High Frequency
Antennas are reciprocal devices. That is, just as transmitter power applied to the feedpoint of an antenna results in a field of a certain strength at a remote point, fields originating remotely can impinge upon that same antenna and create a received signal voltage and power at that same feedpoint.
Under most—but not all—circumstances, the best antenna to use for transmitting is also the best antenna to use for receiving. Sometimes, however, the use of a separate receiving antenna (or antennas) can lead to better reception and an overall improvement in communications reliability. This is especially true for the very low frequency (VLF), low frequency (LF), medium frequency (MF), and lower high-frequency ...
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