Long range radio transmission is possible when the radio waves are reflected from the ionosphere. For this to happen, the frequency of the radio waves must be in the range
![Frequency Range- ELF, LF,MF ,HF, VHF, UHF, SHF, EHF, ULTRAVIOLET, INFRARED, X-Ray & Application - YouTube Frequency Range- ELF, LF,MF ,HF, VHF, UHF, SHF, EHF, ULTRAVIOLET, INFRARED, X-Ray & Application - YouTube](https://i.ytimg.com/vi/IWuVmtSwZOU/maxresdefault.jpg)
Frequency Range- ELF, LF,MF ,HF, VHF, UHF, SHF, EHF, ULTRAVIOLET, INFRARED, X-Ray & Application - YouTube
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![Frequencies for communication VLF = Very Low FrequencyUHF = Ultra High Frequency LF = Low Frequency SHF = Super High Frequency MF = Medium Frequency EHF. - ppt download Frequencies for communication VLF = Very Low FrequencyUHF = Ultra High Frequency LF = Low Frequency SHF = Super High Frequency MF = Medium Frequency EHF. - ppt download](https://images.slideplayer.com/32/9806724/slides/slide_2.jpg)