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-   -   FM Broadcast band as we know it going away? (https://www.radiobanter.com/broadcasting/28472-fm-broadcast-band-we-know-going-away.html)

Robert Hovland February 16th 04 03:06 AM

FM Broadcast band as we know it going away?
 
Dear Newsgroup,

Does anyone know the latest info about what is going to happen to the FM
band when the FCC forces all of the VHF television stations to give up
their broadcast band and switch to the new freqency allocations for
digital TV? As you may or may not know, the FM band is located in between
channels 6 and 7, I believe, and I would be surprised if the FCC would
leave the FM band alone when the TV stations get out. They want to
auction these soon-to-be-obsolete TV channel frequencies off to the
highest bidder.

The consequences I think of when I consider the moving of the FM band are
monstrous: what about all of the car radios, portable FM radios and
walkmen, and collector hifi FM tuners that will suddenly become unusable
without maybe some kind of adaptor which may or may not work very well?

To me, it just doesn't seem right that we need to have change for the sake
of "progress", unless the progress is real and necessary. Many times it
seems that these huge changes in the basic infrastructure of our
communications industry are done for the sake of the economic enrichment
of those companies who stand to profit richly from such a change, without
giving much, or any, consideration to the consequences.

When a land developer decides to make major changes to a piece of
undeveloped land, an environmental impact report has to be made before the
developer can go ahead with their plans. Where is the impact report for
this huge planned change in the FM band?

I would like to get comments from others who know more about this proposed
change and when it is to occur.


Steven J Sobol February 16th 04 03:32 AM

Robert Hovland wrote:
Dear Newsgroup,

Does anyone know the latest info about what is going to happen to the FM
band when the FCC forces all of the VHF television stations to give up
their broadcast band and switch to the new freqency allocations for
digital TV?


[sneck]

The consequences I think of when I consider the moving of the FM band are
monstrous: what about all of the car radios, portable FM radios and
walkmen, and collector hifi FM tuners that will suddenly become unusable
without maybe some kind of adaptor which may or may not work very well?


Why should Mikey Powell give a rat's ass?

Really... we're going to all have to replace our TV sets when analog
television signals are phased out, aren't we? (At least that's what I've
been led to understand)

I personally have no desire to do so. I have digital cable. There is no
additional attraction to having HDTV.

The people south of here in the Marianas - the hills that separate Apple
Valley, California from San Bernardino - might benefit. But only the people
south or east of the Apple Valley town line, in unincorporated San Bernardino
County, because they can't get cable (Charter's franchises are in Hesperia
and Apple Valley and Victorville, but they don't have an agreement for the
unincorporated areas where not many people live)... and especially in the
Marianas, with the big hills right to the south, satellite might not be an
option either. (Going east of AV towards Lucerne and Big Bear, satellite
should be doable as the hills aren't over there.)

I've *always* considered HDTV to be a solution looking for a problem...

communications industry are done for the sake of the economic enrichment
of those companies who stand to profit richly from such a change, without
giving much, or any, consideration to the consequences.


That's fine. Mikey P. can buy me a new television set. :-P

When a land developer decides to make major changes to a piece of
undeveloped land, an environmental impact report has to be made before the
developer can go ahead with their plans. Where is the impact report for
this huge planned change in the FM band?


There is none. I doubt that anyone at the FCC cares (although I'm sure people
will pipe up and tell me I'm wrong :)

--
JustThe.net Internet & New Media Services, Apple Valley, CA
Steven J. Sobol, Geek In Charge / 888.480.4NET (4638) /
PGP: C57E 8B25 F994 D6D0 5F6B B961 EA08 9410 E3AE 35ED



Garrett Wollman February 16th 04 06:27 AM

In article ,
Robert Hovland wrote:

Does anyone know the latest info about what is going to happen to the FM
band when the FCC forces all of the VHF television stations to give up
their broadcast band


The FCC is not so doing, thus the consequences of such an action are
moot. (Just ask your friends at KOTA-DT channel 2.)

-GAWollman

--
Garrett A. Wollman | As the Constitution endures, persons in every
| generation can invoke its principles in their own
Opinions not those of| search for greater freedom.
MIT, LCS, CRS, or NSA| - A. Kennedy, Lawrence v. Texas, 539 U.S. ___ (2003)


R J Carpenter February 16th 04 06:27 AM


"Robert Hovland" wrote in message
...

Does anyone know the latest info about what is going to happen to the FM
band when the FCC forces all of the VHF television stations to give up
their broadcast band and switch to the new freqency allocations for
digital TV?


No, they don't have to switch to new channels. They have a choice of using
the DTV on either of their channels. I'd imagine that many would choose
their VHF channel if DTV turns out to work well there.

As you may or may not know, the FM band is located in between
channels 6 and 7,


As are hundreds of other services.

I would be surprised if the FCC would
leave the FM band alone when the TV stations get out.


I see no connection what-so-ever between the TV switch to digital and any
effect on the FM band or any other services between 88 and 174 MHz. It
isn't as though FM stations were given a second frequency and have to choose
between it and their current one.

They want to
auction these soon-to-be-obsolete TV channel frequencies off to the
highest bidder.


Right.

The consequences I think of when I consider the moving of the FM band are
monstrous: what about all of the car radios, portable FM radios and
walkmen, and collector hifi FM tuners that will suddenly become unusable
without maybe some kind of adaptor which may or may not work very well?


I'd say that there is 0.00000000000001 % chance that the FM band would be
moved. Where would it be moved to? TV was already allocated the UHF
channels where much of DTV is located. Anyhow, some DTV stations are
already on VHF, including channel 2. There is no other FM band for the
stations to move to.

I would like to get comments from others who know more about this proposed
change and when it is to occur.


Who said there was a proposed change for FM? I think you are making this up
from whole cloth.

TV is allocated a HUGE bandwidth. Modern receivers allow much closer
spacing on UHF. The FCC is chosing to reclaim and sell some of this wasted
bandwidth as part of the DTV situation. There is no parallel in FM.








Doug Smith W9WI February 16th 04 06:27 AM

Robert Hovland wrote:
Does anyone know the latest info about what is going to happen to the FM
band when the FCC forces all of the VHF television stations to give up
their broadcast band and switch to the new freqency allocations for
digital TV?


Best bet right now is that that's not going to happen. "Core spectrum",
into which all DTV will be placed, is channels 2-51.

The FCC changed their minds twice about which spectrum to allocate.
First, they said all DTV would be UHF. Then, they amended "core" to
read channels 7-51. Finally, they seemed to conclude not all stations
could be accomodated in 7-51, and added 2-6 to the list.

My employer, whose analog signal is on channel 4, drew digital channel
10. Our biggest competitor has an analog signal on channel 5 and a
digital on channel 56. They'll be forced to move their digital signal
to channel 5 after the analog signs off. Channel 6 in Philadelphia drew
digital channel 64, and will also be forced to move back to VHF after
analog closes. There are many other examples.

My guess is that the VHF stations didn't want to surrender the coverage
(and power efficiency) advantages of the lower channels; and the
land-mobile interests didn't want the large antennas and susceptibility
to sporadic-E interference inherent in VHF.

channels 6 and 7, I believe, and I would be surprised if the FCC would
leave the FM band alone when the TV stations get out. They want to
auction these soon-to-be-obsolete TV channel frequencies off to the
highest bidder.


FM indeed lies between channels 6 and 7 - just above channel 6. (you
can receive channel 6 audio on most FM radios)

The FCC has recently authorized "in band on channel" digital radio
broadcasts in the current 88-108 band.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com


Tony Calguire February 16th 04 04:42 PM

Doug Smith W9WI wrote:


The FCC changed their minds twice about which spectrum to allocate.
First, they said all DTV would be UHF. Then, they amended "core" to
read channels 7-51. Finally, they seemed to conclude not all stations
could be accomodated in 7-51, and added 2-6 to the list.



It sure is a shame they didn't go through with their original plan. I
would have liked to have seen channels 2-6, or at least channels 5 and
6, given over to the FM broadcast band. Just think of how IBOC and LPFM
might have worked out if the FM band had a little room to expand!


Peter H. February 16th 04 04:42 PM



Does anyone know the latest info about what is going to happen to the FM band
when the FCC forces all of the VHF television stations to give up their
broadcast band and switch to the new freqency allocations for digital TV?


Nothing.

As soon as the conversion to D-TV is complete, the TV stations which were
temporarily relocated to other channels, some to VHF, but most to UHF, can
return to their original channel, but on digital.



Ben February 17th 04 04:03 PM

I get a nice signal from WSMV-DT on my Channel Master UHF antenna here
in Bowling Green. Of course 56 booms in but 10's pic is much better.
Of course maybe I'm just prejudiced. HA

Funny thing I'm just like 2 or 3 miles from the local ABC and can't
receive it with the antenna pointing right at the tower but I can get
Channel 2's signal I'm guessing almost 65 or more miles away full
copy. Must be multipath...

Ben
W4WSM

My employer, whose analog signal is on channel 4, drew digital channel
10. Our biggest competitor has an analog signal on channel 5 and a
digital on channel 56. They'll be forced to move their digital signal
to channel 5 after the analog signs off. Channel 6 in Philadelphia drew
digital channel 64, and will also be forced to move back to VHF after
analog closes. There are many other examples.

My



Doug Smith W9WI February 17th 04 04:03 PM

Tony Calguire wrote:
It sure is a shame they didn't go through with their original plan. I
would have liked to have seen channels 2-6, or at least channels 5 and
6, given over to the FM broadcast band. Just think of how IBOC and LPFM
might have worked out if the FM band had a little room to expand!


That's an interesting question: could two TV channels worth of spectrum
(12MHz) provide enough room to give each analog FM BC station a digital
counterpart without using IBOC?

Since IBOC-AM seems to (more-or-less?!) work within 15KHz or so of
bandwidth, it would seem a functional system with adequate quality to
replace FM could be made to work with 120KHz available to each station.

But the FCC had a hard enough time fitting the DTV assignments into the
channels they have. Even dropping one or two might prove a serious
problem...
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com


Garrett Wollman February 18th 04 12:50 AM

In article ,
Doug Smith W9WI wrote:

But the FCC had a hard enough time fitting the DTV assignments into the
channels they have. Even dropping one or two might prove a serious
problem...


There would be enough bandwidth in a couple of 6-MHz TV channels to
make Eureka 147 work for every station in most markets....

On a more politically-correct note, there are interference constraints
between 8VSB transmissions on channel 6 and NCE-FM assignments which
resulted in very few TV stations being allocated DTV 6. (I think I
only found two when I looked. One of the original assignments was for
WCTX New Haven (moving from 59); they found that the constraints on
their power as a channel 6 were so confining that they arranged an
allocation swap with very-low-power WEDY New Haven, which didn't need
the coverage.) So it's conceivable that, after the transitional
period is through, channel 6 could still be cleared for other
purposes.

-GAWollman

--
Garrett A. Wollman | As the Constitution endures, persons in every
| generation can invoke its principles in their own
Opinions not those of| search for greater freedom.
MIT, LCS, CRS, or NSA| - A. Kennedy, Lawrence v. Texas, 539 U.S. ___ (2003)


Doug Smith W9WI February 18th 04 03:36 PM

Garrett Wollman wrote:
the coverage.) So it's conceivable that, after the transitional
period is through, channel 6 could still be cleared for other
purposes.


There are nine stations whose analog assignment is channel 6 and whose
digital is above 51. Those stations would have to be accomodated
elsewhere to clear channel 6 after transition. (I suppose that might be
possible by using one of the channels freed by other stations in the
same market.)

FWIW those nine stations a

KVIE Sacramento (DTV-53)
WABG Greenwood, Miss. (DTV-54)
KOTV Tulsa (DTV-55)
WIPR San Juan (DTV-55)
KWQC Davenport, Ia. (DTV-56)
WCML Alpena, Mich. (DTV-57)
WKMG Orlando (DTV-58)
WLNS Lansing (DTV-59)
WPVI Philadelphia (DTV-64)

Also FWIW, there are eight stations whose analog assignment is channel 5
and whose digitals are outside core.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com


Doug Smith W9WI February 18th 04 03:36 PM

Ben wrote:
I get a nice signal from WSMV-DT on my Channel Master UHF antenna here
in Bowling Green. Of course 56 booms in but 10's pic is much better.
Of course maybe I'm just prejudiced. HA


I've been impressed with our DTV. It does a pretty good job. WKRN's
does a darned good job too. I think something's broken with WTVF-DT,
they don't do anywhere near as well as their analog. (nor anywhere near
as well as WKRN-DT)

Funny thing I'm just like 2 or 3 miles from the local ABC and can't
receive it with the antenna pointing right at the tower but I can get
Channel 2's signal I'm guessing almost 65 or more miles away full
copy. Must be multipath...


Probably, WBKO'd do a lot better if they'd splurge for a bigger tower...
(do it cooperatively with channel 40, they both could use the help...
of course, WSMV is better off with channel 40 having a wimpy signalgrin)

I've seen WBKO-DT here, but only once and during a big tropo opening.
The KETs (which aren't all that powerful) are far more frequently seen.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com


Michael Black February 18th 04 07:43 PM

(Robert Hovland) wrote in message ...
Dear Newsgroup,

Does anyone know the latest info about what is going to happen to the FM
band when the FCC forces all of the VHF television stations to give up
their broadcast band and switch to the new freqency allocations for
digital TV? As you may or may not know, the FM band is located in between
channels 6 and 7, I believe, and I would be surprised if the FCC would
leave the FM band alone when the TV stations get out. They want to
auction these soon-to-be-obsolete TV channel frequencies off to the
highest bidder.

This is an absurd notion, based on a lack of understanding.

There is a big chunk of spectrum between channels 6 and 7.

FM broadcast band 88-108MHz

The aero band, 108 to 136MHz or so.

Whatever is between 136 and 144MHz

2 meter amateur band, 144 to 148MHz

"Public service band" 148 to 174MHz
(I've lumped a lot here; paging, fire and police (at least in the
old days, MURS, the VHF marine band, the weather service broadcasts,
business use, etc).

Then comes channel 7.

So if they took the FM band away, there would still be a large chunk
there.

Take note that there is a 6MHz gap, a whole channel, between channels
4 and 5, which actually would be "in the way" more than the FM
band clustered with those other services that will not move.

What you also miss is the amount of spectrum that would be released
if TV vacated from the VHF frequencies (which the other posters
have indicated will not happen). 72MHz would be free, which is
in fact a massive amount of spectrum. TV is the widest bandwidth
signal commonly used, and you can fit an awful lot of stations in the
6MHz bandwidth used by one channel, the moreso now as schemes have
come into play to make better use of the spectrum for two way
communication.

So if the tv channels were released for other uses, a measly 20MHz
for the FM band is nothing.

Even if none of this was true, except for TV there is very little
need for continuous spectrum. So six MHz here, and six MHz there
will result in 12MHz available, and they do not have to be adjacent.
What we have seen is TV getting in the way. They were allocated over
fifty years ago, when radio was still relatively unused. They took
up large chunks of the VHF spectrum, no other service has so much
allocation in the 30 to 300MHz range, and so whatever came later
had to be fitted into whatever segments remained. Once the spectrum
was full, there was no more space to put anything, even though in any
given location there was always space lying empty, since no area has
all tv channels in use. The other services don't need so big chunks,
but TV is using any available space.

In other words, even if the tv channels were vacated for other uses,
there is no reason to lump the FM broadcast band with them.

Michael


John Byrns February 19th 04 04:12 PM

In article , (Michael Black) wrote:

Take note that there is a 6MHz gap, a whole channel, between channels
4 and 5, which actually would be "in the way" more than the FM
band clustered with those other services that will not move.


Isn't that a 4 mHz gap, not 6 mHz, between channels 4 and 5 that whatever
takes up?


Regards,

John Byrns


Surf my web pages at,
http://users.rcn.com/jbyrns/


Frank Provasek February 19th 04 04:12 PM

No such proposal has been made. Digital FM has already been introduced on
the
existing 88-108 Mhz band.


"Robert Hovland" wrote in message
...
Dear Newsgroup,

Does anyone know the latest info about what is going to happen to the FM
band when the FCC forces all of the VHF television stations to give up
their broadcast band and switch to the new freqency allocations for
digital TV? As you may or may not know, the FM band is located in between
channels 6 and 7, I believe, and I would be surprised if the FCC would
leave the FM band alone when the TV stations get out. They want to
auction these soon-to-be-obsolete TV channel frequencies off to the
highest bidder.

The consequences I think of when I consider the moving of the FM band are
monstrous: what about all of the car radios, portable FM radios and
walkmen, and collector hifi FM tuners that will suddenly become unusable
without maybe some kind of adaptor which may or may not work very well?

To me, it just doesn't seem right that we need to have change for the sake
of "progress", unless the progress is real and necessary. Many times it
seems that these huge changes in the basic infrastructure of our
communications industry are done for the sake of the economic enrichment
of those companies who stand to profit richly from such a change, without
giving much, or any, consideration to the consequences.

When a land developer decides to make major changes to a piece of
undeveloped land, an environmental impact report has to be made before the
developer can go ahead with their plans. Where is the impact report for
this huge planned change in the FM band?

I would like to get comments from others who know more about this proposed
change and when it is to occur.




Michael Black February 19th 04 08:18 PM

John Byrns ) writes:
In article , (Michael Black) wrote:

Take note that there is a 6MHz gap, a whole channel, between channels
4 and 5, which actually would be "in the way" more than the FM
band clustered with those other services that will not move.


Isn't that a 4 mHz gap, not 6 mHz, between channels 4 and 5 that whatever
takes up?

You're right, I was looking at the chart wrong.

Michael



Chris Boone February 19th 04 08:18 PM

AHH FYI, There is only 4 MHz between TV 4 and 5....
72-76 MHz....not 6 MHz! Used for radio links (only is areas where TV 4
and 5 are not allocated/used) and model remote controls.

136-144 is government use....satellites (wx, etc) MARS, CAP, etc...even
Russia's MIR used 143.625 MHz as a comm channel....

Chris
WB5ITT
wb5itt sub for Nospam above
Houston

Michael Black wrote:

Whatever is between 136 and 144MHz


Take note that there is a 6MHz gap, a whole channel, between channels
4 and 5, which actually would be "in the way" more than the FM



R J Carpenter February 20th 04 02:01 AM


"Chris Boone" wrote in message
...
AHH FYI, There is only 4 MHz between TV 4 and 5....
72-76 MHz....not 6 MHz! Used for radio links (only is areas where TV 4
and 5 are not allocated/used) and model remote controls.


Are there still 75 MHz fan markers of airport instrument approaches?
[Showing my age.]




Mark Roberts February 20th 04 07:49 AM

Garrett Wollman had written:
| In article ,
| Robert Hovland wrote:
|
| Does anyone know the latest info about what is going to happen to the FM
| band when the FCC forces all of the VHF television stations to give up
| their broadcast band
|
| The FCC is not so doing, thus the consequences of such an action are
| moot. (Just ask your friends at KOTA-DT channel 2.)

Evidently a few TVs are doing so already. KCSM San Mateo, CA (secondary PBS
for the San Francisco Bay Area) announced in its March program guide
that it will give up its analog allocation on channel 60 and will
broadcast exclusively as DT on channel 43, multicasting at least
two channels. The second channel will be a jazz channel
complementing KCSM-FM. The primary reason, though, seems to be
economic: "We made the decision that our resources needed to go
toward serving more students by creating a whole new telecourse
'stream', rather than paying what amounts to double rent and
electricity to continue our analog broadcast."

KCSM estimated that about 8% of its viewing audience will be
affected. Cable and satellite feeds are to continue.


--
"You're about to see a great sunset if you're in the right place."
-- KCBS morning traffic anchor, 6.58 am, February 9, 2004


Ben February 20th 04 07:01 PM

WKRN really does have a nice signal. So much better than the analog
with all it's co-channel.

I don't think BKO will ever go for a bigger stick. They never have
been on the cutting edge and they seem to be happy with covering the
surrounding counties. They have 4 antennas on the tower now with 13
and 24 both on it.

I spoke with 40's GM a little while back and he talked of a new tower
and an actual studio but it hasn't happened. I did turn the antenna
around and see the DT signal but it didn't impress me so it was back
to WSMV...I'm just glad the signal on 10 is so good up here.

KET is running 4 channels. Too bad we can't see the PBS HD stuff.
Wonder when 8 will turn on a transmitter?

What's the deal with the Sinclair stations? They looked bad enough
before DT but now they look like pixalated mush.

Ben
W4WSM



I've been impressed with our DTV. It does a pretty good job. WKRN's
does a darned good job too. I think something's broken with WTVF-DT,
they don't do anywhere near as well as their analog. (nor anywhere near
as well as WKRN-DT)

Funny thing I'm just like 2 or 3 miles from the local ABC and can't
receive it with the antenna pointing right at the tower but I can get
Channel 2's signal I'm guessing almost 65 or more miles away full
copy. Must be multipath...


Probably, WBKO'd do a lot better if they'd splurge for a bigger tower...
(do it cooperatively with channel 40, they both could use the help...
of course, WSMV is better off with channel 40 having a wimpy signalgrin)

I've seen WBKO-DT here, but only once and during a big tropo opening.
The KETs (which aren't all that powerful) are far more frequently seen.



R J Carpenter February 20th 04 07:01 PM


"Mark Roberts" wrote in message
...

SNIP
The primary reason [for turning off over-the-air analog TV], though, seems

to be
economic: "We made the decision that our resources needed to go
toward serving more students by creating a whole new telecourse
'stream', rather than paying what amounts to double rent and
electricity to continue our analog broadcast."

KCSM estimated that about 8% of its viewing audience will be
affected. Cable and satellite feeds are to continue.


Amazing.

Is all that spectrum bandwidth occupied by over-the-air TV really serving
only a small percentage of the population? Rural areas surely must still
rely on over-the-air TV.


As an aside, in the news report that Cox Cable and ESPN had made peace it
was reported that Cox will pay ESPN $2.61 per month for each of their cable
subscribers!

[Moderator's Note: Yes, rural areas do, to a certain extent, rely on over-
the-air TV, but in many cases, people probably have DSS or cable, like my
parents who live 40 miles east of Cleveland in Geauga County, Ohio, and get
most of their programming from Dish Network.

Here in Apple Valley, CA, and throughout the (mostly rural) High Desert,
there are probably more people who have to rely on over-the-air signals, but
the Los Angeles stations, which are 90 miles southwest of here, all have
translators sitting on a tower down in Hesperia. The tower isn't well
maintained, though, and I don't know whether Victorville's lone local TV
station, KHIZ-TV 64, has its transmitter in that area or not... my wife says
they don't, actually, and that their transmitter is up in Victorville near
their studio.

But in Apple Valley/Victorville/Hesperia, unless you live outside city limits,
you can get cable from Charter, and up in Barstow, you can get cable from...
mmm... I think it's Time Warner. And in spite of the mountainous terrain,
most homes in this area are properly situated to use DSS also.

Interesting note: Until the recent mandates allowing DSS providers to
carry local stations, my parents had to use an antenna to get Cleveland's
TV stations. They're 40 miles from Cleveland, about the same distance from
Erie, PA, and maybe 50 from Youngstown, Ohio, and they could get stations
from all three cities, but the signals weren't very strong. In spite of the
fact that they could pay Dish $5 per month to get Cleveland local TV, I
believe they still use their antenna. I have no clue why. **SJS]


Mark Howell February 21st 04 12:44 AM

On 20 Feb 2004 19:01:43 GMT, "R J Carpenter"
wrote:


Amazing.

Is all that spectrum bandwidth occupied by over-the-air TV really serving
only a small percentage of the population? Rural areas surely must still
rely on over-the-air TV.


Some years ago, my employer's TV station (since sold) was hit by a
devastating arson fire that wiped out its transmitter. The station
was off the air for weeks, but kept feeding cable headends. Ratings
were unchanged. Hardly any viewers noticed the on-air signal was
gone.

I'm sure the cable penetration is even higher now, although it's been
several years since I checked.

Mark Howell


Mark Roberts February 21st 04 02:30 AM

R J Carpenter had written:
|
| "Mark Roberts" wrote:
|
| KCSM estimated that about 8% of its viewing audience will be
| affected. Cable and satellite feeds are to continue.
|
| Amazing.
|
| Is all that spectrum bandwidth occupied by over-the-air TV really serving
| only a small percentage of the population?

In the San Francisco Bay Area, it is quite likely. Yet NBC did
suffer a hit when it got into a snit with KRON (from losing the
bidding to buy the station) and flipped the affiliation to KNTV in
San Jose. An estimated 25% of the geographic area lost NBC service
over-the-air, but KNTV quickly arranged with Comcast's predecessor
to ensure cable carriage on area systems. In any event, KNTV has filed
to move to Mt. San Bruno (the site that KCSM-TV is leaving). But the
hit in ratings may have come more from KNTV's image (or lack of image)
in the market and having to compete with the San Francisco incumbent
stations in news. KNTV doesn't seem to be really committing the
resources or the brains to do it consistently right. It's passable
but feels like about Kansas City in quality.

Anyhow, due to the terrain of the Bay Area, as well as its
geographic expanse, there is no site that will serve all
areas well. There will be significant dead spots no matter
where the transmitter is located -- obviously, that's true
for FM as well. The best combination for FM stations seems to be a
Sutro (SF) or Beacon site with on-channel repeaters in the I-680 corridor
in the East Bay. TVs haven't tried that combination, possibly due to
the relatively heavy reliance on cable. KDTV does have a translator
in Santa Rosa (far North Bay), and KRON did have one there until KQED-DT
came on and wiped out channel 30.


--
"You're about to see a great sunset if you're in the right place."
-- KCBS morning traffic anchor, 6.58 am, February 9, 2004


Tom Desmond February 21st 04 04:20 PM

R J Carpenter wrote:

Is all that spectrum bandwidth occupied by over-the-air TV really serving
only a small percentage of the population?


This varies dramatically from market to market -- national "penetration"
numbers for cable and satellite are averages, with some areas much
lower, and others much higher. In the Dallas-Fort Worth area, off-air
viewing of the local stations is still common, since we have one of the
lowest cable penetration rates in the country, and not all satellite
subscribers opt to pay the satellite company to provide what they can
receive off-air for free.

TV stations. They're 40 miles from Cleveland, about the same distance from
Erie, PA, and maybe 50 from Youngstown, Ohio, and they could get stations
from all three cities, but the signals weren't very strong. In spite of the
fact that they could pay Dish $5 per month to get Cleveland local TV, I
believe they still use their antenna. I have no clue why. **SJS]


Why pay $5/month to get what they're currently getting for free? It
seems a very rational decision to me...especially since the antenna
apparently provides signals from mulitple markets, something that Dish
can't legally offer to them.


Doug Smith W9WI February 21st 04 04:20 PM

Ben wrote:
WKRN really does have a nice signal. So much better than the analog
with all it's co-channel.


IMHO that's only half the problem. Even without the CCI here, the
computer noise/leaky insulators are pretty bad - and when they aren't
present, the signal can be just plain snowy.

But when the sporadic-E kicks in, well, you'd better have a DTV if you
want to watch ABC... There have been days when I've had a snow-free
signal from XEFB with some weak WKRN CCI in the background!

(then again, if you'd seen a picture of the XEFB transmitter site (I
have), you'd know why they get out so well!)

I don't think BKO will ever go for a bigger stick. They never have
been on the cutting edge and they seem to be happy with covering the
surrounding counties. They have 4 antennas on the tower now with 13
and 24 both on it.


I wonder if there might be some concern over WKRN (and as a result, ABC)
getting bent out of shape if WBKO puts too much RF down into Tennessee?

Wonder when 8 will turn on a transmitter?


8 just took out a STA for roughly 45kW ERP. Strange, as I thought I
read their full-power transmitter was already ready to go & they were
just waiting on the STL and encoder.

What's the deal with the Sinclair stations? They looked bad enough
before DT but now they look like pixalated mush.


I don't watch often enough to know... They've got five transmitters at
the same site now (all three digitals and the analogs for 30 and 58) so
I suppose STL bandwidth is at a premium...
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com


Charles Hobbs February 21st 04 04:20 PM

John Byrns wrote:
In article , (Michael Black) wrote:


Take note that there is a 6MHz gap, a whole channel, between channels
4 and 5, which actually would be "in the way" more than the FM
band clustered with those other services that will not move.



Isn't that a 4 mHz gap, not 6 mHz, between channels 4 and 5 that whatever
takes up?


Ch 2 - 54-60 mHz
Ch 3 - 60-66 mHz
Ch 4 - 66-72 mHz

72-76 - used by pagers, model airplanes, etc.

Ch 5 - 76-82 mHz
Ch 6 - 82-88 mHz
FM Band - 88 - 108 mHz
etc.


Steven J Sobol February 21st 04 07:02 PM

Tom Desmond wrote:

TV stations. They're 40 miles from Cleveland, about the same distance from
Erie, PA, and maybe 50 from Youngstown, Ohio, and they could get stations
from all three cities, but the signals weren't very strong. In spite of the
fact that they could pay Dish $5 per month to get Cleveland local TV, I
believe they still use their antenna. I have no clue why. **SJS]


Why pay $5/month to get what they're currently getting for free? It
seems a very rational decision to me...especially since the antenna
apparently provides signals from mulitple markets, something that Dish
can't legally offer to them.


Because none of the stations come in clear. I guess they don't mind having
snow on the TV as well as on the front lawn...

--
JustThe.net Internet & New Media Services, Apple Valley, CA
Steven J. Sobol, Geek In Charge / 888.480.4NET (4638) /
PGP: C57E 8B25 F994 D6D0 5F6B B961 EA08 9410 E3AE 35ED



Ron February 23rd 04 06:53 AM

On Mon, 16 Feb 2004 03:06:59 +0000, Robert Hovland wrote:

Dear Newsgroup,

Does anyone know the latest info about what is going to happen to the FM
band when the FCC forces all of the VHF television stations to give up
their broadcast band and switch to the new freqency allocations for
digital TV? As you may or may not know, the FM band is located in between
channels 6 and 7, I believe, and I would be surprised if the FCC would
leave the FM band alone when the TV stations get out. They want to
auction these soon-to-be-obsolete TV channel frequencies off to the
highest bidder.


Who would be interested in this spectrum if its not used for Broadcast?
Not real practical for a mobile communications use since most systems now
use hand held radios and antennas at this band are not user friendly.
Maybe Rural high-speed Internet services?


The consequences I think of when I consider the moving of the FM band are
monstrous: what about all of the car radios, portable FM radios and
walkmen, and collector hifi FM tuners that will suddenly become unusable
without maybe some kind of adaptor which may or may not work very well?

To me, it just doesn't seem right that we need to have change for the sake
of "progress", unless the progress is real and necessary. Many times it
seems that these huge changes in the basic infrastructure of our
communications industry are done for the sake of the economic enrichment
of those companies who stand to profit richly from such a change, without
giving much, or any, consideration to the consequences.

When a land developer decides to make major changes to a piece of
undeveloped land, an environmental impact report has to be made before the
developer can go ahead with their plans. Where is the impact report for
this huge planned change in the FM band?

I would like to get comments from others who know more about this proposed
change and when it is to occur.



Ben February 23rd 04 06:53 AM



I wonder if there might be some concern over WKRN (and as a result, ABC)
getting bent out of shape if WBKO puts too much RF down into Tennessee?

I'm surprised 4 allowed 40 to go NBC. Most of 13's coverage area is
in KY of course and they used to claim they covered more counties of
KY than any other VHF. I kinda think WAVE may have taken that honor
now.

I don't watch often enough to know... They've got five transmitters at
the same site now (all three digitals and the analogs for 30 and 58) so
I suppose STL bandwidth is at a premium...


58 has really come up in analog power and 58's digital is strong now
where it was pretty much flea power before. 30's analog went down here
when they went to the new tower.

Oh well, I'll keep watching for your posts.

Ben


Doug Smith W9WI February 23rd 04 04:14 PM

Steven J Sobol wrote:
TV stations. They're 40 miles from Cleveland, about the same distance from
Erie, PA, and maybe 50 from Youngstown, Ohio, and they could get stations
from all three cities, but the signals weren't very strong. In spite of the
fact that they could pay Dish $5 per month to get Cleveland local TV, I
believe they still use their antenna. I have no clue why. **SJS]


Because none of the stations come in clear. I guess they don't mind having
snow on the TV as well as on the front lawn...


Cable isn't cheap - last I looked, the basic "lifeline" service (just
the local OTA stations and a couple of shopping channels) is $300/year
here. I know people who spend over $1,200/year for cable. Personally,
I'm willing to live with a fair amount of snow to save $300!

One year's "lifeline" cable charges here would buy a digital tuner. It
can be connected to their existing analog TV and antenna and will
deliver a fantastic picture & sound.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com


Doug Smith W9WI February 23rd 04 04:14 PM

Ben wrote:
I'm surprised 4 allowed 40 to go NBC.


So am I. I suspect some money changed hands. (given that they were -
maybe still are - simulcasting some of our newscasts) It would make a
certain amount of sense to operate 40 as a satellite of 4.

58 has really come up in analog power and 58's digital is strong now
where it was pretty much flea power before. 30's analog went down here
when they went to the new tower.


Interesting. 58's analog hasn't improved much since the move. Their
digital is the best of the bunch. To the best of my knowledge they
never operated their digital from the old tower south of town - in fact,
I don't recall their digital ever being authorized to operate from that
tower.

Interesting also that 30's analog dropped. The towers are within a few
dozen feet of each other, and the antenna height actually *increased*
(by an entire 2 meters...) on the new tower. They were already running
the max 5000kw, and still are, at least according to the FCC DB.
--
Doug Smith W9WI
Pleasant View (Nashville), TN EM66
http://www.w9wi.com


Ben February 23rd 04 09:15 PM

Wonder what side of the tower 30's antenna is? I know it was all alone
at the top of the old tower since they came on the air. A whole 2
meters! HA Just looking it looks shorter than the old one...

58 was almost unwatchable up here when they were at the old site. When
they turned on digital it was very weak. I spoke to someone that
worked on the 58 site one day on 444.775. He told me at that time he
couldn't see it across town.

Boy I bet this is a fun thread for everyone but us...

Ben
BTW, is David VanHooser still working there? Sure I didn't spell his
name right...


Interesting also that 30's analog dropped. The towers are within a few
dozen feet of each other, and the antenna height actually *increased*
(by an entire 2 meters...) on the new tower. They were already running
the max 5000kw, and still are, at least according to the FCC DB.



Steven J Sobol February 24th 04 03:32 AM

Doug Smith W9WI wrote:

Cable isn't cheap - last I looked, the basic "lifeline" service (just
the local OTA stations and a couple of shopping channels) is $300/year
here. I know people who spend over $1,200/year for cable. Personally,
I'm willing to live with a fair amount of snow to save $300!


Cable isn't cheap, but 1200/year is 100 per month. I don't pay that much
to Charter, and I not only have digital cable, I also have the $40/month
Internet service (it's the middle-of-the-line residential package, 768x128
Kbps, similar in bandwidth to many residential DSL packages).

--
JustThe.net Internet & New Media Services, Apple Valley, CA
Steven J. Sobol, Geek In Charge / 888.480.4NET (4638) /
PGP: C57E 8B25 F994 D6D0 5F6B B961 EA08 9410 E3AE 35ED



Doug Smith W9WI February 24th 04 04:04 PM

Ben wrote:
Wonder what side of the tower 30's antenna is? I know it was all alone
at the top of the old tower since they came on the air. A whole 2
meters! HA Just looking it looks shorter than the old one...


Hard to tell. I suppose it's possible one of the other poles in the
candleabra is in the way...

58 was almost unwatchable up here when they were at the old site. When
they turned on digital it was very weak. I spoke to someone that
worked on the 58 site one day on 444.775. He told me at that time he
couldn't see it across town.


Hmmm. Maybe they started at even lower power than they're using now?

I did note WNPT's DTV on the air this afternoon. It was off again by
primetime though. Obviously still testing.

BTW, is David VanHooser still working there? Sure I didn't spell his
name right...


No, and I'm not sure!

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


Christopher C. Stacy February 24th 04 08:48 PM

On 24 Feb 2004 03:32:02 GMT, Steven J Sobol ("Steven") writes:

Steven Doug Smith W9WI wrote:
Cable isn't cheap - last I looked, the basic "lifeline" service (just
the local OTA stations and a couple of shopping channels) is $300/year
here. I know people who spend over $1,200/year for cable. Personally,
I'm willing to live with a fair amount of snow to save $300!


Steven Cable isn't cheap, but 1200/year is 100 per month. I don't
Steven pay that much to Charter, and I not only have digital cable,
Steven I also have the $40/month Internet service (it's the
Steven middle-of-the-line residential package, 768x128 Kbps, similar
Steven in bandwidth to many residential DSL packages).

Here in the Boston area, the top tier package for Digital Cable
costs $94.20, HDTV is another $7.25, and if you want the Internet
that's another $42.95. Not counting the rental of the set-top box,
and all the taxes and extra fees.




[email protected] October 9th 13 03:17 PM

FM Broadcast band as we know it going away?
 
Good day to all of you, guys.

I'm a newbie in communications and I do have some questions I hope you can help me answer. Maybe if you have time, I would really appreciate it.

Thanks in advance! :)

1. Give 5 other uses of FM broadcasting and discuss how FM is being used.
2. Why do we say that FM stereo broadcasting is using a Frequency Division Multiplexing? Explain.
3. Why is 19 kHz used as the carrier frequency of the FM stereo broadcasting, why not other frequencies?


Pat[_7_] October 9th 13 07:36 PM

FM Broadcast band as we know it going away?
 
On Wed, 9 Oct 2013 10:17:51 EDT, wrote:

Good day to all of you, guys.

I'm a newbie in communications and I do have some questions I hope you can help me answer. Maybe if you have time, I would really appreciate it.

Thanks in advance! :)

1. Give 5 other uses of FM broadcasting and discuss how FM is being used.
2. Why do we say that FM stereo broadcasting is using a Frequency Division Multiplexing? Explain.
3. Why is 19 kHz used as the carrier frequency of the FM stereo broadcasting, why not other frequencies?


3 First: FM broadcasts as defined many years ago can handle audio
frequencies much higher than human hearing, but the higher you go, the
more bandwidth is needed. So, you can send ultrasonic audio, but
still want to limit the overall bandwidth. 19 KHz is above normal
hearing, but not by much. Double 19 or 38 is used as the carrier for
the L-R channel. 19 is the pilot frequency, not the carrier. But,
the carrier is exactly twice the pilot. Regarding #2, I suppose some
might refer to it as Frequency Division Multiplexing because the
entire audio bandwidth is divided into different uses. 0 to upper
teens for L+R (monaural), 19 for the pilot. 38 + or - upper teens for
L-R, even higher for other purposes. However, I never heard it called
that. Regarding #1, others will have to answer.



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