running dogg wrote:
I think the problem with channel 1 had something to do with skywave
interference-channel 1 easily bounced off the ionosphere and caused
interference in the form of one channel 1 station interfering with
another one a thousand miles away.

Among other reasons. Channel 1 was designated as a "community channel";
stations operating on this channel were limited in power. *All* the TV
channels were shared with other two-way services - the sharing didn't
work very well, and it started at the bottom end of the spectrum - i.e.,
in channel 1.

I don't think any channel 1 stations ever actually operated, but at
least one (in Riverside, California) did receive a permit.

by Hallicrafters. I believe there is a Channel 0 in Australia-can
anybody confirm this?

There is. http://www.w9wi.com/articles/system.htm#systemd.htm , it's at
45-52MHz. My information is that channel 0 is being phased out, if it
hasn't already been deleted. Australia also has a channel 1, but it's
56-63MHz, roughly equivalent to channel 2 in the U.S.

In general, channel numbers outside the Americas correspond to different
frequencies than what we use here.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com

SR wrote:
Can HDTV work without cable?

Yes. All over-the-air analog stations are required to convert to
digital HDTV - probably by 2009. All the NYC stations are up with some
kind of digital signal, though 9/11 stunted DTV pretty badly.

A requirement to include a DTV tuner is being phased in on new TV sets.
Any big-screen TV you buy today will support over-the-air DTV. (OK,
the stores may still have a few older sets in stock...) This
requirement will extend to smaller sets over the next year or two.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com

In article ,
SR wrote:
SR wrote:
I remember a few years ago on channel 13 (PBS), sometimes they would
give these old government program to educate the public (probably from
the early 1970's) about illegal drugs. It was on late at night. The
footage was done on film not video, and the audio was badly worpped.

The program would often have a doctor explaining how dangerous illegal
drugs were, and he would show awful photographs of people.

Does anyone remembers these programs? When did day started to put them
on TV? Why did they stop playing them on TV? Who made them? Who
sponsored them? What there they called? Were they played throughout
the US?

"Round, Round, Out of Your Mind,
You think you're seeing things
I know you're blind
A million bright colors explode in your head
Today, you're just high, tomorrow you're DEAD."

That was the theme song from an anti-LSD film, it also got some
top-40 airplay (probably from government payola).

They played them at school assemblys in the late 60's.
(VCRs were a big $$$ ticket item back then, no home video
existed. So educational stuff was all on film).

Mark Zenier Washington State resident

In article ,
Doug Smith W9WI wrote:
SR wrote:
Can HDTV work without cable?

Yes. All over-the-air analog stations are required to convert to
digital HDTV - probably by 2009. All the NYC stations are up with some
kind of digital signal, though 9/11 stunted DTV pretty badly.

A requirement to include a DTV tuner is being phased in on new TV sets.
Any big-screen TV you buy today will support over-the-air DTV. (OK,
the stores may still have a few older sets in stock...) This
requirement will extend to smaller sets over the next year or two.

You can also buy a Terrestrial HDTV tuner for $250-$500 (Samsung SIR-T351
seems to be the cheapest) that will feed your existing TV/VCR. But the
big box stores don't push them, probably because they get a kickback from
the small dish satellite outfits. Gee, why be fair to the consumer and
sell them a one time $300 box when you can lock them into a subscription
that costs them $600 a year.

Mark Zenier Washington State resident

"Doug Smith W9WI" wrote in message
...
SR wrote:
Can HDTV work without cable?

Yes. All over-the-air analog stations are required to convert to
digital HDTV - probably by 2009. All the NYC stations are up with some
kind of digital signal, though 9/11 stunted DTV pretty badly.



Close, they are required to switch to DTV, not to HDTV. Some stations will
never broadcast HDTV, and many will broadcast it only during certain times
of the broadcast day. Others will broadcast DTV at a lower resolution
(720i?) allowing them to have additional channels within the same bandwidth.

Brenda Ann wrote:
Close, they are required to switch to DTV, not to HDTV. Some stations will
never broadcast HDTV, and many will broadcast it only during certain times
of the broadcast day. Others will broadcast DTV at a lower resolution
(720i?) allowing them to have additional channels within the same bandwidth.

Sorry about that, I knew better...

--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com

running dogg wrote:

starman wrote:

Channel-1 was part of the original Armstrong FM band.

The Armstrong FM band was 42-50 Mhz, IIRC.

Channel-1 was *originally* 44-50 Mhz.

http://members.aol.com/jeff560/tvch1.html

Well, I hope free TV continues in the future!

Well, it is a rare concept: Broadcasting you don't pay for!

Let's see if it survives.

Likely it won't. The FCC is pushing for digital TV and radio, and will require
broadcasters to shut down their analog (free) channels soon.
What it means, is that with digital signals they can start ADDRESSING their
siganls. No pay-no TV. And that means big brother will know what you're
watching because they know what you're paying for.

But take it a step further. You're a Democrat or a liberal, or an
arch-conservative, you may be BLOCKED from watching certain shows, or even
worse, the content is EDITED to suit your particular tastes. Of course, they
can also manipulate you.

Pretty scary huh?

Why do you think the government is funding PBS/CPB/NPR? Wait until they need
to control content. It'll be interesting.

In a really weird way, ANALOG IS FREEDOM!

running dogg wrote:

Radioman390 wrote:

Well, I hope free TV continues in the future!

Well, it is a rare concept: Broadcasting you don't pay for!

Let's see if it survives.

Likely it won't. The FCC is pushing for digital TV and radio, and will require
broadcasters to shut down their analog (free) channels soon.
What it means, is that with digital signals they can start ADDRESSING their
siganls. No pay-no TV. And that means big brother will know what you're
watching because they know what you're paying for.

But take it a step further. You're a Democrat or a liberal, or an
arch-conservative, you may be BLOCKED from watching certain shows, or even
worse, the content is EDITED to suit your particular tastes. Of course, they
can also manipulate you.

Pretty scary huh?

Why do you think the government is funding PBS/CPB/NPR? Wait until they need
to control content. It'll be interesting.

In a really weird way, ANALOG IS FREEDOM!

The US is starting to look more and more fascist by the day.

You're a kook!

dxAce
Michigan
USA

dxAce wrote:



running dogg wrote:

Radioman390 wrote:

Well, I hope free TV continues in the future!

Well, it is a rare concept: Broadcasting you don't pay for!

Let's see if it survives.

Likely it won't. The FCC is pushing for digital TV and radio, and will require
broadcasters to shut down their analog (free) channels soon.
What it means, is that with digital signals they can start ADDRESSING their
siganls. No pay-no TV. And that means big brother will know what you're
watching because they know what you're paying for.

But take it a step further. You're a Democrat or a liberal, or an
arch-conservative, you may be BLOCKED from watching certain shows, or even
worse, the content is EDITED to suit your particular tastes. Of course, they
can also manipulate you.

Pretty scary huh?

Why do you think the government is funding PBS/CPB/NPR? Wait until they need
to control content. It'll be interesting.

In a really weird way, ANALOG IS FREEDOM!

The US is starting to look more and more fascist by the day.

You're a kook!

Now we're talking shortwave. Kooks have SW stations (and kooks listen to
the kook SW stations), tards don't.


dxAce
Michigan
USA