You are welcome!

carrierwaves do not travel further than signals. In fact, some radioamateurs use signals without carrierwave to get greater distance. It is called "single side band", either upper or lower. (SSB, USB, LSB) Higher frequencies don't have larger coverage, but in shortwave they do have a bigger "dead-zone")

You are so welcome!

You are welcome!

Thank you for watching!

It depends. AM is cheaper and transmits over longer distance, but with noises and lower quality. FM is in high quality, but expensive and transmit over the shorter distance.

@@sunnyclassroom24 sir, example if i am using a transciever radio @27Mhz FM and my friend i using a transciever @27Mhz AM, can we talk to each other? or can we hear each other?

@@neildelacruz6643 maybe not.

@@sunnyclassroom24 thank you sir for the reply..i am learning from your videos..

@@neildelacruz6643 You are welcome!

thanks a lot for leaving nice comment.

Yes, on FM it changes carrier frequency up and down from main tuned frequency and it is called bandwidth. There is narrow bandwidth and wide bandwidth. Narrow bandwidth is used for voice communication where is not important complete audio spectrum such bass and treble audio frequencies like on police, army, fire department... communication so the bandwidth is narrow and it could be 30kHz, 25kHz, 12kHz, that means on 30kHz bandwidth it changes 15kHz up from main frequency carrier and 15kHz down from main carrier frequency, on 25kHz bandwidth it changes 12,5kHz up and 12,5kHz down, on 12kHz bandwidth it changes 6kHz up and 6kHz down from main frequency carrier. The narrow the channel bandwidth is the lower the quality sound reproduction is (cutting bass and treble audio range), but benefit is you can have more frequency channels on the same range. On wide channel bandwidth such demand on commercial radio broadcasting 87,5-108 MHz where people are listening the music and demanding high quality sound reproduction, you need to modulate whole audio spectrum from 20Hz-20kHz the basses, midrange, treble, then stereo subcarriers, pilot, left an right channel, you need wide bandwidth such 200kHz, that means 100kHz down and 100kHz up from main frequency carrier to compress whole information. The television channels take even wider bandwidth 8 or 9MHz, that means 4,5MHz down and 4,5MHz up to modulate sound and picture on frequency carrier. Previous when was TV analog modulation you could on one channel modulate only one TV station. Sound was FM and picture was AM modulated, today when is digital broadcasting you can modulate on one frequency TV channel up to 10 different TV programs which package of different TV programs on one frequency is called multiplexer.

AM can travel over a longer distance.

You are welcome, Altaf. I am from China, originally.

You are welcome!

higher freq = higher bandwidth but lower area coverage.it also used in 5g that they have to built many nanocell to gain more bandwidth

there's no such thing as "AM frequency". What you are missing is that on high-frequency bands there simply is more space ("bandwidth"). On mediumwave and longwave, stations are just 9 or 10 KHz apart. On shortwave they can be 5 KHz apart. On the FM-band (aka "3-meterband"), that is 87.5-108.5 MHz, they are at least 100 KHz apart. Also, the higher the frequency, the more information you can modulate

@@farenzu4578 "higher freq = lower area coverage". Not necessarily. Most high frequencies all have a comparable area with a radius of a few dozen kilometers. 5G needs more stations than other frequencies because it uses a frequency of 600+ MHz that gets absorbed by oxigen - just like visible light gets absorbed by fog

It depends on your location. some times AM is very clear and stable.

Can someone please explain it to me

Because lower frequency means larger wavelength and hence larger area.

Groundwave/Skywave propagation.

Wrong question. Low frequencies (longwave, mediumwave, shortwave) get reflected by layers high up, whereas high frequencies like UHF go (almost) straight into space. These things are notr dependent on modulation-type

phase modulation produces by FM mostly same concept.

Thank you for watching!

I prefer FM locally.

Thank you!

i use 1.5

Thank you for your nice comments!

Hi