How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

"Radium" wrote in message
ps.com...

snip

Analog radio-frequency video devices should use FM.


Like satellite downlinks do? Yes, that's best for their purposes. Others
would fall in if it were best for them. Apparently it isn't.

How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

"NotMe" wrote in message
...

"Radium" wrote in message
oups.com...
| On Jul 15, 6:58 pm, Jeff Liebermann wrote:
|
| Radium hath wroth:
|
| The AM audio cause by lightning is so boring.
| All you get are clicks
| and pops.
|
| Oh no. It's much better than that. You get snap, crackle, pop,
| crash, hiss, zap, buzz, braaaaaap, and other noises, all to the
| accompanyment of loud thunder and the smell of ozone. It can also
| make the fur stand up on your back.
|
| One thing that I do like are the sharp sawtooth wave patterns that
| show up on FM video receivers whenever lightning strikes. FM video
| receivers receive Y [luminance] signals present on FM radio waves.
| Electrical disturbances affect the FM video receiver causing those
| beautifaul zapping and buzzing sawtooth patterns on the screen.

The only FM on standard TV is the audio. Video is vestigial sideband AM.

BTW my grand daughter had that figured out by the time she was 12 y.o.


Analog satellite still uses FM, but there is very little of that left. 30MHz
wide channels. Think there used to be one version of SECAM (in France, IIRC)
that used FM video. That's gone now, too.

How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

"Jeff Liebermann" wrote in message
...

Have you ever attended a meeting or event about something you really
don't care about? The lady friend has dragged me to horse shows, dog
shows, cat shows, and various cultural events, where it was a major
accomplishment for me to stay awake. Yet to her, it was the highlight
of excitement and of great interest. In other words, science and
technology may be interesting to you and I, but to many, it's just a
big boring waste of their time.

Oh, sure, and I couldn't agree more. I place the blame for
that squarely on our education system, which - unless you
have amazingly good luck in getting the right teacher - will
present "science" as an incredibly dull collection of arcane
facts and formulas to be memorized, and not an interesting,
exciting process full of wonders. The root of that, of course,
is just that the "science" teachers most often don't really know
what "science" is all about in the first place.


Wrong. Science fiction has mutated into social adventure, space
opera, and historical fantasy. I haven't seen any really technical
science fiction in many years.

Spider Robinson. Joe Haldeman. Larry Niven. Jerry
Pournelle. Ben Bova. Greg Egan. Stephen Baxter.
Arthur C. Clarke, who, thank the FSM, is still with us and writing.
Sure, there's an AWFUL lot of crap out there - SF, like everything else,
obey's Sturgeon's Law - but the good stuff is still being written.
You just have to look for it.

Bob M.

How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

"Radium" wrote in message
ps.com...

OTOH, AM video is boring. FM video is better. As I said before, the Y
[luminance] signal should be carried on an FM wave rather than an AM
wave.

OK, but then, you're quite ignorant of anything remotely related
to this field, aren't you?

Bob M.

How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

"Radium" wrote in message
oups.com...

One thing that I do like are the sharp sawtooth wave patterns that
show up on FM video receivers whenever lightning strikes.

When, pray tell, have you ever seen an "FM video receiver"?

Bob M.

How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

In rec.radio.amateur.antenna Bob Myers wrote:

"Radium" wrote in message
oups.com...

One thing that I do like are the sharp sawtooth wave patterns that
show up on FM video receivers whenever lightning strikes.

When, pray tell, have you ever seen an "FM video receiver"?

Bob M.

Where he gets the rest of his "technology"; drug dreams.

--
Jim Pennino

Remove .spam.sux to reply.

How I would like to change the cell phone industry [was AM
 

Radium wrote:
One thing that I do like are the sharp sawtooth wave patterns that
show up on FM video receivers whenever lightning strikes. FM video
receivers receive Y [luminance] signals present on FM radio waves.
Electrical disturbances affect the FM video receiver causing those
beautifaul zapping and buzzing sawtooth patterns on the screen.

You may also enjoy listening to the dial tone while standing in a glass
payphone booth.

How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

"Bob Myers" hath wroth:


"Radium" wrote in message
roups.com...

One thing that I do like are the sharp sawtooth wave patterns that
show up on FM video receivers whenever lightning strikes.

When, pray tell, have you ever seen an "FM video receiver"?
Bob M.

I have one of those FM video receivers. It's my (ancient) Wavetek
3000b communications service monitor, which displays all kinds of
nifty light shows and patterns for FM. I often tune it to the WX
channel and watch the modulation on the scope display. It's kinda
hypnotic without the accompanying audio and sometimes an improvement
over what's available on TV. I guess it's TV for radio geeks.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

How I would like to change the cell phone industry [was AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency]
 

"Bob Myers" hath wroth:

Wrong. Science fiction has mutated into social adventure, space
opera, and historical fantasy. I haven't seen any really technical
science fiction in many years.

Spider Robinson. Joe Haldeman. Larry Niven. Jerry
Pournelle. Ben Bova. Greg Egan. Stephen Baxter.

In the interest of brevity, I won't rattle off examples of how most of
those authors started out with hard technical science fiction, and
ended up recently writing what amounts to "future social problems"
type of sci-fi. At age 74, Ben Bova still cranks out excellent
stories but seems to be very light on the technology in the last few
years. Stephen Baxter is a scientist and really does well speculating
on where technology is sending us. Greg Egan is a mathemagician with
a rather creative view of artificial intelligence. Haldeman puts me
to sleep, Niven is just plain weird, and Pournelle is too militarist
for my liking. They've all done "hard" sci-fi writing, but as time
progresses, seem to be writing for a much different audience, such as
writing for TV or movies. That's where the space opera, social
adventure (chase scenes, crash and burn, and explosions) are coming
from. I still read Stephen Baxter, but none of the others. This is
the first I've heard of Spider Robinson, but will give his stuff a
look.

Arthur C. Clarke, who, thank the FSM, is still with us and writing.

Yeah, but he can certainly beat the "2001 Space Odyssey" theme to
death. At 89, I'm really impressed that he's still working. However,
his last few books have been co-authored by Stephen Baxter and read
more like Baxter's complex writing, than Clarke's neatly clipped short
lines.

Ok, I'll concede the hard sci-fi hasn't gone down the tubes completely
and that there are still authors catering to a technically astute
audience. However, even the best of these (as you've itemized) tend
to drift toward the popular media, mass market, and general audience
market, which deals primarily in entertainment. This entertainment is
invariably devoid of technology, lacking in a basis on physical
reality, and is dominated by space opera and general idiocy. For
every sci-fi author that knows his science, there are perhaps 50 that
are lacking. Little wonder that space opera predominates as it
requires very little technical expertise to write.

Maybe that's why I like reading Mr. Radium's muddled tech rants. It's
the closest approximation to science fiction I can easily find.

Sure, there's an AWFUL lot of crap out there - SF, like everything else,
obey's Sturgeon's Law - but the good stuff is still being written.
You just have to look for it.

These daze, I have to do more than look. I have to dig, excavate, and
filter to find it. However, I found a suitable replacement about 10
years ago. I was reading dot com business plans. Not only was I
being paid to rip them apart, but the products and services were some
of the best science fiction I had ever read. The authors of some of
those business plans really should be writing sci-fi stories. I
really miss the passing of the dot com era and the tremendous
technical imagination that helped make it happen.

Reminder: None of the sci-fi authors up to about 1970, ever predicted
the rise of personal computah. It was always the giant mainframe
(Multivac). Some came close with remote terminals, but even those had
a mainframe behind them. Oh well, can't get it right every time.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558