Radio Navigation - Radio Wave Propagation
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- เผยแพร่เมื่อ 16 ก.ค. 2024
- This video consists of the following:
Radio Wave Propagation
Properties of Radio Waves
Radio Spectrum
Surface wave
Space wave
Sky wave
Quiz Link: goo.gl/9jTwpP
All Radio Navigation links: planesohead.blogspot.com/2018...
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• Radio Navigation - VDF
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Cheers and Happy landings! :) - วิทยาศาสตร์และเทคโนโลยี
At 10:00 Higher the Frequency, More will be Critical Angle and MORE will be the Skip Distance.
2nd, at 9:50 More the Ionisation, lesser will be the Critical Angle and LESSER will be the Skip Distance .
please mention that, as that's the basic of radio waves and if students get conflicting things in mind then it only confuses them when actual question will come in exam
I’m really enjoying this radio series so far! Looking forward to more videos.
Sit tight!
Many thanks for this wonderful video.
Thank you!! Really helping at Radio Navigation
This is probably the best discussion of propogation I've come across, and gave a good introduction to the idea of Critical Angle/Ray. If I may say so though, I think a few words on Near Vertical Incident Skywave ("NCIS") would have been helpful, ie (as you know), the beaming of HF signals towards the Ionosphere at a very steep angle, resulting in their refraction/reflection back to Earth at a commensurately steep angle, so that coverage can be achieved in what would otherwise be a zone of 'dead space', or in areas that theoretically ought to be reachable by Line of Sight (I think!) or Groundwave transmission, but where, in fact, the existence of very mountainous terrain means that a lot of 'dead spots' exist because they are in radio 'shadow'. Also, personally, I would have appreciated a few words on how the different means of propogation relate to the broadcast radio bands (VHF/FM, and Short, Medium and Long Wave, as they used to be known, also known as - loosely speaking - 'AM')... although it may be that you have covered this in another video.
Thank you for your comment! It'll help everyone else!
Great video sir please make a video on vortex generator
Thanks a lot brother.
Nice video. Could you make videos about the following topics:
1.Equation of motion for level, unaccelerated flight
2. Thrust and power required for level, unaccelerated flight
3. Power available for propeller and het engines
4. Variation and power required with altitude
5. Rate of Climb
6. Glide angle
It would be really nice to make these video since I want to study it for my academic test for admission to TU Delft Aerospace Engineering. Thanks 🙏.
Make a playlist for the RTR exam. Mainly on Part 1.
Good point on critical angle and dead space
Thank you!
At 5:30 your diagram for Night should depict a much depleted E Layer. "At night the E layer weakens because the primary source of ionization is no longer present. After sunset an increase in the height of the E layer maximum increases the range to which radio waves can travel by reflection from the layer."
Thank you! I'll try to put it in if possible! Thanks for your comment and suggestion!
I am a little confused. My understanding is that higher frequencies are weaker than the lower frequencies but as explained here, the higher frequencies escapes thru the ionized layer because of their strength and doesn't get reflected back to earth.
Yes i wonder how they transmitet video from the moon
Weaker for range but have lots of energy because of frequency, they can break things because of their frequency.
Just have a one quick doubt
DUCTING used VLF band as per you mentioned in your video But I guess VHF and other frequencies are used!!!
DO reply and clear my DOUBTt!?
Ducting is a phenomenon which generally lower band and even lower band of VHF ranges also get affected so accordingly range gets decided.
Hallo. Thanks for the videos. Is range not 1.25? ( 4:02 of the video)
That is anyway an approximation. Can use either, doesn't matter.
Teaching is an art… Not everyone knows it. You are just reading out brother.
Some "basic" topics for pilot level of understanding don't need a lot of explanations and is not rocket science and hence it may seem reading to you. You can choose to not use the video. Thank you.
can i skp unit 2 of radio nav after this video?
Not really but this is fundamental to build your further knowledge.
@@poh I cleared nav in Jan :-)
Congratulations
@@poh thank you I have regulations in 5 days , recently got eliminated in air india cadet program going to write the exam disheartened so
Please speaking to bangla,,,i like it video
I’m struggling to understand this accent
Lol well that can't be really changed overnight.