On Fri, 19 May 2006 18:40:47 GMT, "Michael A. Terrell"
wrote:


The actual uplink is usually in the 10 to 25 watt region for video,
and it would take less for a narrow audio only signal. An all solid
state microwave transmitter would only consume a few hundred watts. The
studio equipment would use more energy than the uplink. BTW, i have
been trying to track down the owner of an abandoned C-band video
confrencing earth station that was built by Microdyne. I want the
equipment because the system is serial number one, and the only uplink
they ever built.


http://www.cpii.com/satcom/products/index.html?2092575#

David,

On that we can agree 101 re-broadcasts
of Coast-to-Coast AM is not entertainment
that will cause Late Night Radio Listeners
to Tune-the-Dial to find something of interest.

Require all 50 KW Clear Channel AM/MW Radio Stations
to carry locally produced 'original' Programming from
5 AM to 10 AM in the Mornings and 7 AM to 12 Midnight
in the Evenings.

~ RHF

I don't even watch those Nutjobs Leno (although Leno's auto articles in
Popular Mechanics www.popularmechanics.com magazine,I do read and
I highly respect,at least that Nutjob does respect fine Automobiles and
stuff) and Letterman on Radio tv.
cuhulin

Telamon wrote:

In article ,
"Michael A. Terrell" wrote:


The actual uplink is usually in the 10 to 25 watt region for
video,
and it would take less for a narrow audio only signal. An all solid
state microwave transmitter would only consume a few hundred watts.
The studio equipment would use more energy than the uplink. BTW, i
have been trying to track down the owner of an abandoned C-band video
confrencing earth station that was built by Microdyne. I want the
equipment because the system is serial number one, and the only
uplink they ever built.

I figured a few hundred watts for uplink power of the final PA but as
you mention there are facilities that need to be supported along with
the uplink dish. People are often surprised at how much power is
consumed by support facilities for the electronics, lights and air
conditioning. I have managed facilities that consume 100 KW and did not
transmit any signal, just lights, electronic equipment, air
conditioning, and heating.


WACX TV in Orange City Fl. has a 500 KW Onan diesel generator to
power their 195 KW transmitter, the control room, air conditioning and
tower lights in case of an emergency.



People tend to forget the cost of putting the satellite into orbit.
This is a cost that can not be ignored either.

I don't know where you go looking for C band uplink equipment.

--
Telamon
Ventura, California

When I worked in CATV back in the mid '80s the line was, "A 20 Watt
TWT is worth $1,000 on the ground, and $1,000,000 in orbit". The Sat
owner would auction off the useful life of each of the 24 transponders
for about $1,000,000, depending on the type of bird, the shape of each
antenna, and its orbital parking spot. Most had two to six spare TWTs
that could be switched in when one of the 24 original TWTs failed, or
got too weak to use. The output power of each transponder was
controlled by the uplink power levels. The signals were uplinked in the
6 GHZ region, mixed against the onboard L.O. and retransmitted in the 4
GHZ region.


This is an abandoned facility a couple miles from here, and I want
the equipment to add to my collection of unique equipment built by my
former employer (Microdyne). How often do you get a chance to collect
something with serial number 1? Also, it is the earth station that was
used by Captain Midnight to jam HBO over 20 years ago, so its a piece of
history.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

"Brenda Ann" wrote in message
...

"David Eduardo" wrote in message
. net...

wrote in message
...
Mr.Eduardo,do a search for AM Radio Stations in America.
And why do you think so many Americans are so interested in DXing for AM
Radio Stations all over America?

Actually, very few DXers are around any more. The largest DX club has
only about 600 members now.


Not everyone belongs to a club.. in fact I would guess that the number of
actual DX'ers that belong to clubs versus the ones that don't is an
infinitessimal percentage. Most simply enjoy the hobby/activity and don't
want to pay dues to join a club. I personally know 10's of dozens of such
people, and my circle of friends includes a lot more than engineer types
and hardcore hobbyists. I don't know a single person that has had your
experience with IBOC, and a lot that have had the opposite experience.

In every market, we have had good HD experiences on AM and FM... NY, Miami,
Dallas, Houston, Chicago, Phoenix, LA, San Diego, San Francisco, etc. All
our engineers like it, and love the sound.

Portland IBOC can interfere quite well with adjacent signals (AM), but
cannot be heard in the outlying areas that normally get very good
reception.

The HD signal exceeds the USABLE Am and FM coutours in every case... unless
you are using the Boston Acoustics Receptor, which is a bad HD radio.

Several of the Portland stations (both AM and FM) have long been popular
daily listens as far south as Salem, as far north as Longview/Kelso and as
far west as Seaside, Tillamook and Astoria. To the east is a big problem
due to topography. The AM IBOC signal can't even be heard without an
external antenna as far as Beaverton or Troutdale, which are both part of
the primary coverage (market) area.

There are only a couple of receivers out, none with the second generation
design specs. The first generation was a premble. It was not until this
month that the HD consortium began promoting HD, and the new receivers will
be in places like Radio Shack, Best Buy and Circuit City in the next 90 days
in stage three of the rollout (one was to put HD on enough major market
stations, two was to get programming on HD-2 channels, and three is to start
promoting to consumers). .

"David Eduardo" wrote in message
. com...

"Brenda Ann" wrote in message
...

"David Eduardo" wrote in message
. net...

wrote in message
...
Mr.Eduardo,do a search for AM Radio Stations in America.
And why do you think so many Americans are so interested in DXing for
AM
Radio Stations all over America?

Actually, very few DXers are around any more. The largest DX club has
only about 600 members now.


Not everyone belongs to a club.. in fact I would guess that the number of
actual DX'ers that belong to clubs versus the ones that don't is an
infinitessimal percentage. Most simply enjoy the hobby/activity and
don't want to pay dues to join a club. I personally know 10's of dozens
of such people, and my circle of friends includes a lot more than
engineer types and hardcore hobbyists. I don't know a single person that
has had your experience with IBOC, and a lot that have had the opposite
experience.

In every market, we have had good HD experiences on AM and FM... NY,
Miami, Dallas, Houston, Chicago, Phoenix, LA, San Diego, San Francisco,
etc. All our engineers like it, and love the sound.

Portland IBOC can interfere quite well with adjacent signals (AM), but
cannot be heard in the outlying areas that normally get very good
reception.

The HD signal exceeds the USABLE Am and FM coutours in every case...
unless you are using the Boston Acoustics Receptor, which is a bad HD
radio.

Several of the Portland stations (both AM and FM) have long been popular
daily listens as far south as Salem, as far north as Longview/Kelso and
as far west as Seaside, Tillamook and Astoria. To the east is a big
problem due to topography. The AM IBOC signal can't even be heard without
an external antenna as far as Beaverton or Troutdale, which are both part
of the primary coverage (market) area.

There are only a couple of receivers out, none with the second generation
design specs. The first generation was a premble. It was not until this
month that the HD consortium began promoting HD, and the new receivers
will be in places like Radio Shack, Best Buy and Circuit City in the next
90 days in stage three of the rollout (one was to put HD on enough major
market stations, two was to get programming on HD-2 channels, and three is
to start promoting to consumers). .


They can market them all they want. I don't know anyone personally that will
buy one. They're just not willing to spend the sort of money to replace
something that's been working just fine for them. And I doubt seriously that
much of the general populus will want to replace the 5-10 analog radios they
already have just for a joke of a digital signal. You keep talking about the
contours.. well, those may look good on paper, they don't work in real life
situations. You'll learn that when people start tuning out of your stations
en-masse. I know that personally, I will never spend the money on IBOC
receiving equipment. I won't spend a cent to replace something that has
always worked with something of questionable value in general and no value
whatsoever to me. IBOC interferes with adjacent channel stations. This is
just poor engineering, and something that would never have been allowed in
the days when the FCC was composed of engineers instead of greedy
politicians. I was just talking to a friend of mine on the Oregon coast who
has been listening regularly to KONA in the tri-cities on 610 for decades.
He can no longer listen to it because KPOJ 620 in Portland turned on their
IBOC and is splattering 15KHz either side of their carrier. You can do your
best to talk up this boondoggle, but most of us see it for what it is.. just
another way for the NAB to screw the little guy, including the listeners. I
think you'll find that rather than buy expensive new radios, that listeners
will just turn off their radios and go to other entertainment modes.. this
is already largely the case with Ipods, portable CD and MD players, etc.
Most young people don't even own a radio anymore, it's too easy for them to
get the music they want, load it onto a personal portable device, and hear
what they want, when they want, without incessant DJ patter and endless
advertisements.

In every market, we have had good HD experiences on AM and FM... NY,
Miami, Dallas, Houston, Chicago, Phoenix, LA, San Diego, San Francisco,
etc. All our engineers like it, and love the sound.

I call BS. I have personal reports that AM IBOC cannot be heard in downtown
Manhattan on a display radio.

Our (AFN) engineers say their crap sounds great, too. Yet the AM is full of
drops (not dropouts, the equipment actually shuts down for a half second
every minute or so), it is also overmodulated, clipped and overcompressed.
They also only feed one half a stereo feed into it, which makes it
interesting to listen to. The FM in many plants is either out of phase
(stereo mpx), shrill, or severely over or under modulated.

I'm a former broadcast engineer myself. I would be ashamed to claim I was
anywhere near any of these AFN sites. Me internet radio station sounds
better than any of them but their FM flagship, and it's only a 56K stereo
stream, I don't EXPECT it to sound like a good broadcast station.

On Fri, 19 May 2006 15:48:46 GMT, (Mark Zenier)
wrote:

In article ,
David wrote:
That's simply not true. I get several stations from Mt. Wilson in
pristine digital that are unlistenable in FM Stereo.

VHF or Medium Wave?

IBOC on .54-1.705 MHz just doesn't make sense, technically.

Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)


http://www.well.com/~dmsml/wilson.html

I agree. DRM would be better. But Eureka 147 15 years ago would've
been better, too.

Radio Buff wrote:
Telamon wrote:
How much energy did it take to put the satellite into orbit?
How much power is used in the uplink effort?

How much energy did it take to make your plastic shortwave?

Probably about 0.00003 seconds worth of rocket burn.

--
Britney Spears' Guide to Semiconductor Physics
http://britneyspears.ac/lasers.htm

David Eduardo wrote:
"Eric F. Richards" wrote...
Arbitron will never figure it out, too.

Arbitron uses a percentage of RDD calls (Random Digit Dialing) to know
prefixes. This is to pick up unlisted phones in proportion with their
presence in each metro. Some will be inactive. Some will not answer. Some
will be faxes. So they perform enough calls to get the proper quota of
unlisted numbers to get market proportionality.

It doesn't matter that the comedian expected to get the pie in his face,
it's still funny to watch it happen.

--
Britney Spears' Guide to Semiconductor Physics
http://britneyspears.ac/lasers.htm