Newbie Quest: Definitions & Band Limits For VHF, UHF, etc. ?
 

Hello:

Newbie Queast.:

What are the generally accepted freq. limits and definitions for the various
bands:

LF

HF

VHF

UHF

etc.

Thanks,
Bob

"Robert11" wrote in message
...
Hello:

Newbie Queast.:

What are the generally accepted freq. limits and definitions for the
various
bands:

LF

HF

VHF

UHF

etc.

The frequencies usually jump like this:

..3 mhz to 3 mhz LF
3 mhz to 30 mhz HF
30 to 300 VHF
300 to 3000 UHF

In article ,
"Ralph Mowery" wrote:

"Robert11" wrote in message
...
Hello:

Newbie Queast.:

What are the generally accepted freq. limits and definitions for the
various
bands:

LF

HF

VHF

UHF

etc.

The frequencies usually jump like this:

.3 mhz to 3 mhz LF
3 mhz to 30 mhz HF
30 to 300 VHF
300 to 3000 UHF



Bzzzzzzt, Wrong answer, would you like to try for whats behind Door No.
3?

30Kkz to 300Khz LF
300Khz to 3.0Mhz MF
3Mhz to 30 Mhz HF
30Mhz to 300 VHF
300 Mhz to 3Ghz UHF
3Ghz to 30Ghz SHF


me who actually had to learn this stuff in Phyics 101

Me wrote:

Bzzzzzzt, Wrong answer, would you like to try for whats behind Door
No. 3?

3Ghz to 30Ghz SHF

http://www.k5rmg.org/bands.html

--
"A positive attitude may not solve all your problems, but it will annoy
enough people to make it worth the effort." -Herm Albright

Robert11 wrote:
What are the generally accepted freq. limits and definitions for the
various bands:

As defined by international treaty, currently the "Radio Regulations"
(IRU, Geneva, 2001), the designations for the bands are (view with fixed
font!):


Freq. 30kHz 300kHz 3MHZ 30MHz 300MHz 3GHz 30GHz
VLF | LF | MF | HF | VHF | UHF | SHF | EHF
| | | | | | |
Band
--4----|---5----|---6----|---7----|----8----|----9---|---10---|---11--
| | | | | | |
Wave- | lw | mw | sw | | | |
length 10km 1000m 100m 10m 1m 10cm 1cm


After using up the adjectives very/ultra/super/extremely, they gave up and
band 12 (300-3000 GHz) has no name. The bands below 9 kHz (the lowest freq.
subject to treaty) are usually referred to as ELF.
/* barry /&

F. Barry Mulligan . net...

I like your soup!


^ --4----|---5----|---6----|---7----|----8----|----9---|---10---|---11--
^ | | | | | | |
^ Wave- | lw | mw | sw | | | |
^ length 10km 1000m 100m 10m 1m 10cm 1cm


So can we use the same adjectives in describing the wavelength?


| | | | | | |
Wave- elw | lw | mw | sw | vsw | usw | ssw | esw
length 10km 1000m 100m 10m 1m 10cm 1cm



Frank