That depends upon the technology you are using, Tetra standard, DMR, Apco 25, etc. In India ministry of Communications grants 25 khz, 12.5 khz channel spacing, even 6.25 khz is sufficient in some digital Modulations using APCO 25 Standard VHF walkie talkies.
Correction, VHF is not handy, base sation is widely used, handy VHF if just for mobile communication, but it always connected with VHF base station through antenna
Hi there... Im a Kayak Guide currently constructing a guide class in the Patagonia and for us Radios are very important, could you please tell me why the UHF frequencies can go trough objects and VHF can't? I understand it has something to do with the Freq Width but I don't know how.
Dear sir, thank you for all your love and support for my channel .. Like light Rays, radio waves also undergoes reflection, refraction, diffraction, dispersion etc. Do you know why there is something visible even if sun light is not directly reaching there. This concept of light is called diffraction from the edge of doors, windows etc.. likewise the radio waves whose wavelength is approximately equal to the length or dimensions of objects like buildings, doors , windows then radio waves diffracts and dispers and enters into the houses.. inside the building. the wavelength of UHF is about the order of openings of buildings, hence it penetrates inside... But the frequency of VHF is higher so it reflects back and unable to penetrate inside. Like mesh reflectors of dish antenna if frequency is higher it reflects,
Vhf freq range is use for short range communication i think its maximum range is 30 to 40 kms and its depend on weather if weather is clear then this range increse and uhf is medium range communication
What is the minimum difference between two different VHF frequinces to be used in channels
That depends upon the technology you are using, Tetra standard, DMR, Apco 25, etc. In India ministry of Communications grants 25 khz, 12.5 khz channel spacing, even 6.25 khz is sufficient in some digital Modulations using APCO 25 Standard VHF walkie talkies.
Thank you for this video. Best video on internet.
SIR you are giving nice information 👍
Brief but Precisely and good for layman.
Thank you for your valuable feedback 🙏
Good👍
Jabardast sir ji...please keep uploading videos..
Thank you for all your love and support 🙏
Very nice demonstration sir, kindly comment on quadruple antenna , lambda by 4 antenna, how to make it and how it works, thank you
Informative video for all radio enthusiast. Need one video on HF Frequency
Sure
Correction, VHF is not handy, base sation is widely used, handy VHF if just for mobile communication, but it always connected with VHF base station through antenna
Hi there... Im a Kayak Guide currently constructing a guide class in the Patagonia and for us Radios are very important, could you please tell me why the UHF frequencies can go trough objects and VHF can't? I understand it has something to do with the Freq Width but I don't know how.
Dear sir, thank you for all your love and support for my channel ..
Like light Rays, radio waves also undergoes reflection, refraction, diffraction, dispersion etc. Do you know why there is something visible even if sun light is not directly reaching there. This concept of light is called diffraction from the edge of doors, windows etc.. likewise the radio waves whose wavelength is approximately equal to the length or dimensions of objects like buildings, doors , windows then radio waves diffracts and dispers and enters into the houses.. inside the building. the wavelength of UHF is about the order of openings of buildings, hence it penetrates inside...
But the frequency of VHF is higher so it reflects back and unable to penetrate inside.
Like mesh reflectors of dish antenna if frequency is higher it reflects,
Please kindly let us know the equipments of ham radio
We have noted will come up with some solutions either in from of other video lecture/documentry . Thank you for all your love.
Thank you
Thank you sir..
Welcome
Can u please tell me how you are making such nice animations videos...I also want to make for my knowledge
I am using camtasia software
Goodd
Thank you for your support and love
Pls tell me sir
I am using camtasia software
Thank you
Vhf freq range is use for short range communication i think its maximum range is 30 to 40 kms and its depend on weather if weather is clear then this range increse and uhf is medium range communication
144-148 amateur vhf
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