Q.1 Define & explain critical frequency and maximum usable (MUF) frequency. Critical frequency एवं maximum usable freq
![MUF values and corresponding skip distances for any potential radio... | Download Scientific Diagram MUF values and corresponding skip distances for any potential radio... | Download Scientific Diagram](https://www.researchgate.net/publication/342047372/figure/fig5/AS:1010280209317890@1617880980641/MUF-values-and-corresponding-skip-distances-for-any-potential-radio-frequency-to-be.png)
MUF values and corresponding skip distances for any potential radio... | Download Scientific Diagram
![Radio Wave Propagation. VLF ( 3 – 30 KHz) and LF (30 – 300 KHz) Propagation Marc C. Tarplee, Ph.D. ARRL Technical Coordinator SC Section. - ppt download Radio Wave Propagation. VLF ( 3 – 30 KHz) and LF (30 – 300 KHz) Propagation Marc C. Tarplee, Ph.D. ARRL Technical Coordinator SC Section. - ppt download](https://images.slideplayer.com/27/9231677/slides/slide_20.jpg)
Radio Wave Propagation. VLF ( 3 – 30 KHz) and LF (30 – 300 KHz) Propagation Marc C. Tarplee, Ph.D. ARRL Technical Coordinator SC Section. - ppt download
![OH6BG ヤリ on Twitter: "Enhanced the contour lines for coverage maps in all #VOACAP online services. Added a new functionality for the VOACAP Amateur Radio service: MUF Maps. A new button is OH6BG ヤリ on Twitter: "Enhanced the contour lines for coverage maps in all #VOACAP online services. Added a new functionality for the VOACAP Amateur Radio service: MUF Maps. A new button is](https://pbs.twimg.com/media/EV9wStHWsAcenIr.jpg:large)