I am just starting to dig into HAM radio, and in reading the guide on technician’s test, it refers to knife-edge diffraction. could someone explain to me, where this would be used, and how it is calculated. What problem does this solve or identify in a real world scenario.
In: 1
If there is a wall between the transmitter and the receiver, then radio waves can be bent by the end of the wall. At some point oyu will be able to receive a signal even though you can’t see the transmitter tower yet.
Radio waves can bend around certain edge forms. This explains why you can receive transmissions even though there is a hard ridge, like a mountain crest between you and the transmitter. I’ve had a General License in HAM for years. I’ve seen it, recognized it but could never predict it. Calculation is not possible el15.
https://www.gaussianwaves.com/2019/04/modeling-diffraction-loss-single-knife-edge-diffraction-model/
Latest Answers