![A dish antenna with a diameter of 20.0 \ m receives (at normal incidence) a radio signal from a distant source, as shown in Figure below. The radio signal is a continuous A dish antenna with a diameter of 20.0 \ m receives (at normal incidence) a radio signal from a distant source, as shown in Figure below. The radio signal is a continuous](https://homework.study.com/cimages/multimages/16/untitled-11004336145478788758.jpg)
A dish antenna with a diameter of 20.0 \ m receives (at normal incidence) a radio signal from a distant source, as shown in Figure below. The radio signal is a continuous
![Proceedings | Free Full-Text | Spectro-Temporal Analysis of the Ionospheric Sounding of an NVIS HF Sensor Proceedings | Free Full-Text | Spectro-Temporal Analysis of the Ionospheric Sounding of an NVIS HF Sensor](https://www.mdpi.com/proceedings/proceedings-42-00079/article_deploy/html/images/proceedings-42-00079-g001.png)
Proceedings | Free Full-Text | Spectro-Temporal Analysis of the Ionospheric Sounding of an NVIS HF Sensor
![File:Application of vertical-incidence ionosphere measurements to oblique-incidence radio transmission (IA jresv20n5p683).pdf - Wikimedia Commons File:Application of vertical-incidence ionosphere measurements to oblique-incidence radio transmission (IA jresv20n5p683).pdf - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Application_of_vertical-incidence_ionosphere_measurements_to_oblique-incidence_radio_transmission_%28IA_jresv20n5p683%29.pdf/page1-1200px-Application_of_vertical-incidence_ionosphere_measurements_to_oblique-incidence_radio_transmission_%28IA_jresv20n5p683%29.pdf.jpg)