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Hello, I want to know if it is possible to make a plugin that adds signal fading and white noise to imitate the conditions heard on HF radio. This will be interesting for those who are using morse code over internet (murmur/mumble), as it is usable for learning morse code. More info about it here: http://internetcw.weebly.com/ First, what is fading? In wireless communications, fading is variation of the attenuation of a signal with various variables. These variables include time, geographical position, and radio frequency. Fading is often modeled as a random process. The suns radiation also influences this process as it affects the layers in the earth's atmosphere who are reflecting radio waves. Actual measurements of fading: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2001RS002495 How to simulate HF ionospheric channels in mathlab: https://www.mathworks.com/help/comm/ug/hf-ionospheric-channel-models.html;jsessionid=b893834ebb8a14d96b3bf317b2f9