Total posts : 45366
I got the opportunity yesterday to discuss this subject, and other antenna-related subjects, with Prof. V. T. (whom I have previously mentioned in other threads) for a few hours. He showed me about six pages from his engineering project notebook, in which, using the Friis Transmission Formula, he demonstrated that, when transmitting and receiving surface waves, a vertical monopole above ground has 6 dB more gain when transmitting than when receiving. Although this finding is not new, it is not mentioned in any of the standard antenna books. So, the Professor thinks that this fact is worth retelling, and he intends to submit his derivation to an IEEE publication.