Radio help

[biferi]

Can anyone tell me what Radio Band are Line of site and Groundwave and skywave??
V.L.F
L.F.
M.F.
H.F.
V.H.F
U.H.F

 

[sniperviper21]

may i ask why you keep asking these questions?
are you wanting us to do your homework?
Studying Electronics degree?

Studying Telecommunications are we?

I will answer the question, if you answer my questions.

 

[biferi]

Well I know that Radio Waves start out as Groundwaves and as the FREQ. gets higher the Radiowaves turn into diferant Bands.

But I get lost at what waves are Ground and Skywaves and Line Of Site and things like this.

 

[sniperviper21]

Well I know that Radio Waves start out as Groundwaves and as the FREQ. gets higher the Radiowaves turn into diferant Bands.

But I get lost at what waves are Ground and Skywaves and Line Of Site and things like this.

line of site - like CB's

ground waves - wave propagated on or near the earths surface.

sky waves - often called ionospheric waves, are radiated in an upward direction and returned to Earth at some distant location because of refraction, kind of like when angling a light at a mirror and it bouncing in a direct angle off the mirror back into the air.




and google is your friend.
http://www.google.com/#hl=en&q=radi...qi=g10&oq=radio+wave+prop&fp=6b22d27f49a5e7dd

 

[biferi]

Well I know that thanks but all the Bands I gave you witch Bands are for Skywave Groundwave Line of Site????
Thanks

 

[sniperviper21]

skywaves-
V.L.F
L.F.
M.F.
H.F.


Generally Direct wave ( and line of site)
V.H.F
U.H.F
S.H.F
E.H.F

 

[biferi]

Thank you for all the help.

But one thing
V.H.F
30,000 kHz to 300,000 kHz

U.H.F
300,000 kHz to 3,000,000 kHz

What are the FREQ for SH and EHF??


and are they Radio Spectrum waves as well I never seen them before.

 

[sniperviper21]

requency in the SHF/EHF (20 GHz to 50 GHz) region.

NASA

 

[biferi]

So SHF is 20 GHz to 50 GHz
then what is the range for EHF

 

[sniperviper21]

same as EHF it seams.