Why is it termed "SHORT" WAVE ?

--
CL -- I doubt, therefore I might be !

On Wed, 5 Oct 2005 08:08:01 -0700, "Caveat Lector"
wrote:


Why is it termed "SHORT" WAVE ?
Meters times Megahertz equals 300.

"David" wrote in message
news
On Wed, 5 Oct 2005 08:08:01 -0700, "Caveat Lector"
wrote:


Why is it termed "SHORT" WAVE ?
Meters times Megahertz equals 300.


Then why is 300 kilohertz and 3000 kilohertz termed Medium Wave ???

--
CL -- I doubt, therefore I might be !

Why is it termed "SHORT" WAVE ?

Because it is shorter than medium wave, which in turn is shorter than
long wave - back when these types of radio signals were the commonly
used wavelengths.

Of course, now with microwaves and picowaves, the name becomes much
less meaningful. In fact, the term H(igh) F(frequency), which seems to
have replaced SW for many purposes, is not really accurate either.

Bruce Jensen

"bpnjensen" wrote in message
oups.com...
Why is it termed "SHORT" WAVE ?

Because it is shorter than medium wave, which in turn is shorter than
long wave - back when these types of radio signals were the commonly
used wavelengths.

Of course, now with microwaves and picowaves, the name becomes much
less meaningful. In fact, the term H(igh) F(frequency), which seems to
have replaced SW for many purposes, is not really accurate either.

Bruce Jensen


Very good Bruce -- indeed it is an ancient term carried over to this very
day

From Wikipedia or google


Shortwave radio operates between the frequencies of 3,000 kHz and 30 MHz
(30,000 kHz) and came to be referred to as such in the early days of radio
because the wavelengths associated with this frequency range were shorter
than those commonly in use at that time. An alternate name is HF, or high
frequency.

--
CL -- I doubt, therefore I might be !

Caveat Lector wrote:

"bpnjensen" wrote in message
oups.com...
Why is it termed "SHORT" WAVE ?

Because it is shorter than medium wave, which in turn is shorter than
long wave - back when these types of radio signals were the commonly
used wavelengths.

Of course, now with microwaves and picowaves, the name becomes much
less meaningful. In fact, the term H(igh) F(frequency), which seems to
have replaced SW for many purposes, is not really accurate either.

Bruce Jensen


Very good Bruce -- indeed it is an ancient term carried over to this very
day

From Wikipedia or google

Shortwave radio operates between the frequencies of 3,000 kHz and 30 MHz
(30,000 kHz) and came to be referred to as such in the early days of radio
because the wavelengths associated with this frequency range were shorter
than those commonly in use at that time. An alternate name is HF, or high
frequency.

Some sources disagree on where shortwave begins. And, NASWA considers shortwave
to begin at 2000 kHz.

dxAce
Michigan
USA

http://www.iserv.net/~n8kdv/dxpage.htm

On Wed, 05 Oct 2005 14:21:26 -0400, dxAce
wrote:



Caveat Lector wrote:

"bpnjensen" wrote in message
oups.com...
Why is it termed "SHORT" WAVE ?

Because it is shorter than medium wave, which in turn is shorter than
long wave - back when these types of radio signals were the commonly
used wavelengths.

Of course, now with microwaves and picowaves, the name becomes much
less meaningful. In fact, the term H(igh) F(frequency), which seems to
have replaced SW for many purposes, is not really accurate either.

Bruce Jensen


Very good Bruce -- indeed it is an ancient term carried over to this very
day

From Wikipedia or google

Shortwave radio operates between the frequencies of 3,000 kHz and 30 MHz
(30,000 kHz) and came to be referred to as such in the early days of radio
because the wavelengths associated with this frequency range were shorter
than those commonly in use at that time. An alternate name is HF, or high
frequency.

Some sources disagree on where shortwave begins. And, NASWA considers shortwave
to begin at 2000 kHz.

dxAce
Michigan
USA

http://www.iserv.net/~n8kdv/dxpage.htm

All FCC bands break on 3s.

Caveat Lector wrote:
Why is it termed "SHORT" WAVE ?



"Short" is relative. The "wave length" is the peak to peak (or
trough to trough) distance between the waveforms as they'd be seen on an
ocilliscope. "Shortwaves" are shorter waves than medium waves, which
are shorter waves than Longwaves. At the inception of the science,
"short" waves were the shortest type used (commonly) at that time.
Today, with cellphones and things using wavelengths that go with
gigahertz frequencies, "short" waves begin to look really long by
comparison.

Tony


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Very good Tony
Wikipedia sez

"Shortwave radio operates between the frequencies of 3,000 kHz and 30 MHz
(30,000 kHz) and came to be referred to as such in the early days of radio
because the wavelengths associated with this frequency range were shorter
than those commonly in use at that time. An alternate name is HF, or high
frequency.
en.wikipedia.org/wiki/Short_wave

As I recall the story At one time the bands below 200 meters were considered
worthless, so they gave the whole range to tha Amateurs
Soon they were sending signals across the atlantic

See 200 Meters and Down By Clinton B. DeSoto.
URL: http://www.arrl.org/catalog/?item=0011

--
CL -- I doubt, therefore I might be !






"Tony Meloche" wrote in message
...
Caveat Lector wrote:
Why is it termed "SHORT" WAVE ?



"Short" is relative. The "wave length" is the peak to peak (or trough
to trough) distance between the waveforms as they'd be seen on an
ocilliscope. "Shortwaves" are shorter waves than medium waves, which are
shorter waves than Longwaves. At the inception of the science, "short"
waves were the shortest type used (commonly) at that time. Today, with
cellphones and things using wavelengths that go with gigahertz
frequencies, "short" waves begin to look really long by comparison.

Tony


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