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-   -   WOWO 1190 rumble? (https://www.radiobanter.com/shortwave/69654-wowo-1190-rumble.html)

Ron Hardin April 24th 05 06:35 PM

WOWO 1190 rumble?
 
WOWO 1190 Fort Wayne IN seems to have a low-frequency rumble in the
stereo difference channel, up to about 240 Hz.

It's audible if you listen to either sideband alone (with or without
sync detection) but inaudible if you listen to both sidebands, say
as normal AM or DSB sync detection.

I noticed it a couple weeks ago and it's still there.

They're 160 miles away, so maybe somebody closer can hear it better.

--
Ron Hardin


On the internet, nobody knows you're a jerk.

dxAce April 24th 05 06:47 PM



Ron Hardin wrote:

WOWO 1190 Fort Wayne IN seems to have a low-frequency rumble in the
stereo difference channel, up to about 240 Hz.

It's audible if you listen to either sideband alone (with or without
sync detection) but inaudible if you listen to both sidebands, say
as normal AM or DSB sync detection.

I noticed it a couple weeks ago and it's still there.

They're 160 miles away, so maybe somebody closer can hear it better.


Sounds OK here.

Former WOWO transmitter site 'lawn boy' on Grandpa's tractor.

dxAce
Michigan
USA



Ron Hardin April 24th 05 07:31 PM

Ron Hardin wrote:

WOWO 1190 Fort Wayne IN seems to have a low-frequency rumble in the
stereo difference channel, up to about 240 Hz.

It's audible if you listen to either sideband alone (with or without
sync detection) but inaudible if you listen to both sidebands, say
as normal AM or DSB sync detection.

I noticed it a couple weeks ago and it's still there.

They're 160 miles away, so maybe somebody closer can hear it better.


Here's audio http://rhhardin.home.mindspring.com/wowo2.ram

the sound of a diesel engine idling.

Received sync detected LSB. It's _completely_ gone on AM or sync detected DSB.
Sounds the same on USB as LSB.

So, in other words, it's in the difference channel only.
--
Ron Hardin


On the internet, nobody knows you're a jerk.

Telamon April 25th 05 12:05 AM

In article ,
dxAce wrote:

Ron Hardin wrote:

WOWO 1190 Fort Wayne IN seems to have a low-frequency rumble in the
stereo difference channel, up to about 240 Hz.

It's audible if you listen to either sideband alone (with or without
sync detection) but inaudible if you listen to both sidebands, say
as normal AM or DSB sync detection.

I noticed it a couple weeks ago and it's still there.

They're 160 miles away, so maybe somebody closer can hear it better.


Sounds OK here.

Former WOWO transmitter site 'lawn boy' on Grandpa's tractor.


All that RF must have made you into the DxAce you are today.

--
Telamon
Ventura, California

Telamon April 25th 05 12:12 AM

In article ,
Ron Hardin wrote:

Ron Hardin wrote:

WOWO 1190 Fort Wayne IN seems to have a low-frequency rumble in the
stereo difference channel, up to about 240 Hz.

It's audible if you listen to either sideband alone (with or
without sync detection) but inaudible if you listen to both
sidebands, say as normal AM or DSB sync detection.

I noticed it a couple weeks ago and it's still there.

They're 160 miles away, so maybe somebody closer can hear it
better.


Here's audio http://rhhardin.home.mindspring.com/wowo2.ram

the sound of a diesel engine idling.

Received sync detected LSB. It's _completely_ gone on AM or sync
detected DSB. Sounds the same on USB as LSB.

So, in other words, it's in the difference channel only.


You are describing a case of power supply switch noise or power line
noise getting into the radio. DSB detection will have greater common
mode rejection than USB or LSB. Try some chokes on the power cord or
change the power supply. Find the thing in your house that is generating
the pulse noise on the AC mains.

--
Telamon
Ventura, California

[email protected] April 25th 05 12:13 AM

I remember WOWO Fort Wayne,Indiana from when I lived in
Martinsville,Indiana in 1947,at least I think I do.Our school teacher's
name was Mrs.Rulein,a real nasty ugly looking big old fat mean old
hag,she was.I was in the second grade in school back then.
cuhulin


[email protected] April 25th 05 12:16 AM

What is WOWO's frequency,is it on the AM/MW band? I think I will try to
tune in to WOWO tonight.I can sometimes pick up Evansville,Indiana at
night.
cuhulin


Tony Meloche April 25th 05 12:49 AM

wrote:
What is WOWO's frequency,is it on the AM/MW band? I think I will try to
tune in to WOWO tonight.I can sometimes pick up Evansville,Indiana at
night.
cuhulin




1190 kHz.

Tony

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[email protected] April 25th 05 02:10 AM

WOWO is 1190 on the AM/MW band? ok,thanks Tony,I will try to tune in
WOWO Fort Wayne,Indiana tonight.1190 is right next to 1180 AM in
Jackson,Mississippi in my area so I probally won't be able to pick up
WOWO tonight.Unless WOWO is a powerfull radio station.I often listen to
some radio talk shows on 1180 on the AM band here in Jackson.KMOX
St.Louis is coming in real good right now and I don't even have that old
off the wall brand name AM/FM/SW1/SW2/MB/AIR/POLICE band radio aimed
toward St.Louis,Missouri either.I am fixin to see if I can pick up WOWO
on that beat up old radio that I bought at a Goodwill thrift store for
only a few dollars years ago.I always prefer the old style analog radios
than those stupid always givin trouble new fangled digital radios.
cuhulin


[email protected] April 25th 05 02:12 AM

Is WOWO a talk show radio station or a music station?
cuhulin


wavetrapper April 25th 05 02:36 AM


Ron,

You are hearing the broadcasting disaster known as IBOC...brought to
you by Ibiquity. There are about 70 stations now running IBOC. This
creates a digital signal for the "wonderful" HD radio that no one
wants. It wipes out the adjacent channels on both sides.

The FCC is a big fan of IBOC and approved it last year (so we can have
higher quality sounding signals on AM). So far, daytime only (except
for tests). I can't imagine what it will be like when it gets approved
for night use on MW.

You can kiss at least +/- 10 khz goodbye for any station running IBOC.

Let's hope the marketplace votes "no" on this and IBOC dies a swift
death.

Russ


Tony Meloche April 25th 05 02:43 AM

wavetrapper wrote:
Ron,

You are hearing the broadcasting disaster known as IBOC...brought to
you by Ibiquity. There are about 70 stations now running IBOC. This
creates a digital signal for the "wonderful" HD radio that no one
wants. It wipes out the adjacent channels on both sides.

The FCC is a big fan of IBOC and approved it last year (so we can have
higher quality sounding signals on AM). So far, daytime only (except
for tests). I can't imagine what it will be like when it gets approved
for night use on MW.

You can kiss at least +/- 10 khz goodbye for any station running IBOC.

Let's hope the marketplace votes "no" on this and IBOC dies a swift
death.

Russ



I'm not familiar enough with IBOC at this point to have strong
feelings about it one way or another, but I well remember a bit of
idiocy making the rounds in the early to mid 70's called "stereo AM".
Stereo lo-fi - sheesh. I thought it was an assinine idea then, and I
think so now. Evidently, the marketplace agreed, and it died a quick death.

Tony

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[email protected] April 25th 05 02:56 AM

Russ,is there a website where I can vote NO to that IBOC and HD
nonsense? I think WOWO used to have a station break thingy that went
something like,W OOOOOO W OOOOOO,in Fort Wayne,Indiana!
cuhulin


David April 25th 05 03:07 AM

On 24 Apr 2005 18:36:25 -0700, "wavetrapper" wrote:


Ron,

You are hearing the broadcasting disaster known as IBOC...brought to
you by Ibiquity. There are about 70 stations now running IBOC. This
creates a digital signal for the "wonderful" HD radio that no one
wants. It wipes out the adjacent channels on both sides.

The FCC is a big fan of IBOC and approved it last year (so we can have
higher quality sounding signals on AM). So far, daytime only (except
for tests). I can't imagine what it will be like when it gets approved
for night use on MW.

You can kiss at least +/- 10 khz goodbye for any station running IBOC.

Let's hope the marketplace votes "no" on this and IBOC dies a swift
death.

Russ

I thought AM IBOC sounded more like a vaccum cleaner.


David April 25th 05 03:13 AM

On Sun, 24 Apr 2005 21:43:47 -0400, Tony Meloche
wrote:

wavetrapper wrote:
Ron,

You are hearing the broadcasting disaster known as IBOC...brought to
you by Ibiquity. There are about 70 stations now running IBOC. This
creates a digital signal for the "wonderful" HD radio that no one
wants. It wipes out the adjacent channels on both sides.

The FCC is a big fan of IBOC and approved it last year (so we can have
higher quality sounding signals on AM). So far, daytime only (except
for tests). I can't imagine what it will be like when it gets approved
for night use on MW.

You can kiss at least +/- 10 khz goodbye for any station running IBOC.

Let's hope the marketplace votes "no" on this and IBOC dies a swift
death.

Russ



I'm not familiar enough with IBOC at this point to have strong
feelings about it one way or another, but I well remember a bit of
idiocy making the rounds in the early to mid 70's called "stereo AM".
Stereo lo-fi - sheesh. I thought it was an assinine idea then, and I
think so now. Evidently, the marketplace agreed, and it died a quick death.

Tony

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----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Stereo AM sounded really good until the NRSC mask and the
complete-tuner-on-a-chip with the 2.7 kHz filter.


Tony Meloche April 25th 05 04:30 AM

wrote:
Russ,is there a website where I can vote NO to that IBOC and HD
nonsense? I think WOWO used to have a station break thingy that went
something like,W OOOOOO W OOOOOO,in Fort Wayne,Indiana!
cuhulin



I remember that ID well, yes. Grew up in Detroit in the 1960's, and
WOWO was a reliable catch most of the time, on rare occasion it was even
clear, if dim, on summer afternoons (on a 5-tube "American Standard").
They were a cinch at night, of course.

Ah, the wonderful naivté of childhood. Fort Wayne was 145 miles, as
the crow flies, from where I was in Detroit, but when you're a
12-year-ols DXer, that might as well be the middle of the South China Sea.

Tony

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[email protected] April 25th 05 06:57 AM

I am listening to 1190 AM on my radio right now for a while and it isn't
a very strong signal,it is fading in and out and I do have my radio
turned toward Fort Wayne,Indiana.Is the Art Bell radio show on WOWO
right now? It is near the top of the hour now and I suppose the radio
station will do a station ID of whatever City it is.I think I will do a
www.dogpile.com for,Find Distance and see how far Fort Wayne is from
Jackson.
cuhulin


[email protected] April 25th 05 07:14 AM

Yep,,that is WOWO 1190 Fort Wayne's News,Talk and Weather I was
listening to,Depend on it! the guy in WOWO land said.Fort Wayne is 666
miles North of Jackson,according to www.indo.com/distance I am fixin
to watch Escape From New York movie on telebision now and read some news
updates on the telebision internet.
cuhulin


dxAce April 25th 05 07:21 AM



wrote:

I am listening to 1190 AM on my radio right now for a while and it isn't
a very strong signal,it is fading in and out and I do have my radio
turned toward Fort Wayne,Indiana.Is the Art Bell radio show on WOWO
right now? It is near the top of the hour now and I suppose the radio
station will do a station ID of whatever City it is.I think I will do a
www.dogpile.com for,Find Distance and see how far Fort Wayne is from
Jackson.


Currently has Art Bell Coast to Coast on. Guess it's a 'Best of' sort of
program.

dxAce
Michigan
USA



[email protected] April 25th 05 08:04 AM

Last night Art Bell said he is taking Sunday off,some sort of a meeting
or something he was going to in Southern California and I think he did
say something about a pre-recorded radio talk show of his would be on
tonight.I have to get my beauty sleep now.It's tough work holding this
old couch down.
cuhulin


Ron Hardin April 25th 05 10:54 AM

David wrote:
I thought AM IBOC sounded more like a vaccum cleaner.


Right, it's not IBOC (and it's not power supply noise). It's actual
low frequency modulation on 1190, complementary in each sideband
(so you don't hear it unless you're receiving one sideband only).

I'd doubt you could hear it at night since there are so many other
stations competing for the frequency, unless you're really close.

Whether it's WOWO or not I can't say, but it seems to be most likely,
since it's the only 1190 station really in competition for Central
Ohio in the daytime.

WFAN 660 had the same sort of thing for a couple of months last winter,
only it was a phase modulation introduced by their broken power supply,
inaudible unless you were hearing only one sideband.

This sounds more like a low bandwidth digital subcarrier.

--
Ron Hardin


On the internet, nobody knows you're a jerk.

wavetrapper April 25th 05 11:25 AM

Ok. There was a lot of discussion on some MW boards about the WOWO
IBOC this past week. Assumed it was IBOC going through some
adjustments there.

I have heard is described differently in terms of what it sounds like.
I have listened to some clips and it is hard to describe.


Rich Wood April 25th 05 03:30 PM

On Mon, 25 Apr 2005 02:07:06 GMT, David wrote:

I thought AM IBOC sounded more like a vaccum cleaner.


Are you suggesting it sucks?

Rich


Ron Hardin April 25th 05 03:37 PM

Ron Hardin wrote:

David wrote:
I thought AM IBOC sounded more like a vaccum cleaner.


Right, it's not IBOC (and it's not power supply noise). It's actual
low frequency modulation on 1190, complementary in each sideband
(so you don't hear it unless you're receiving one sideband only).

I'd doubt you could hear it at night since there are so many other
stations competing for the frequency, unless you're really close.

Whether it's WOWO or not I can't say, but it seems to be most likely,
since it's the only 1190 station really in competition for Central
Ohio in the daytime.

WFAN 660 had the same sort of thing for a couple of months last winter,
only it was a phase modulation introduced by their broken power supply,
inaudible unless you were hearing only one sideband.

This sounds more like a low bandwidth digital subcarrier.


I take it back. It's an on-frequency artifact of IBOC after all.
WCOL 1230 Columbus (or whatever they're calling it now) has the same
deal, a diesel engine idling sound when received either LSB only or USB only
but no sound when both sidebands are received. It has IBOC, and in fact I
spend a fair amount of time nulling its splatter into 1240 away to hear
Zanesville Ohio. That 10 kHz off-channel splatter is the obvious component
of IBOC. I hadn't noticed this on-channel artifact before.

So it's a way to tell who is the IBOC splatter source : who has the diesel engine
sound when received LSB (or USB) only.
--
Ron Hardin


On the internet, nobody knows you're a jerk.

[email protected] April 25th 05 05:06 PM

Zanesville,Ohio.Isn't that were they can go to the bridge and turn
right?
cuhulin


David April 25th 05 06:05 PM

On Mon, 25 Apr 2005 10:30:15 -0400, Rich Wood
wrote:

On Mon, 25 Apr 2005 02:07:06 GMT, David wrote:

I thought AM IBOC sounded more like a vaccum cleaner.


Are you suggesting it sucks?

Rich

I'm a Leonard Kahn fan.


David April 25th 05 11:00 PM

On Mon, 25 Apr 2005 19:08:22 GMT, "David Eduardo"
wrote:


"David" wrote in message
.. .
On Mon, 25 Apr 2005 10:30:15 -0400, Rich Wood
wrote:

On Mon, 25 Apr 2005 02:07:06 GMT, David wrote:

I thought AM IBOC sounded more like a vaccum cleaner.

Are you suggesting it sucks?

Rich

I'm a Leonard Kahn fan.


Oh, the guy who killed AM radio?


The phase-lock-loop digital tuner did in AM radio. It sounds like
**** when perfectly tuned in.



[email protected] April 26th 05 12:26 AM


wrote:
I remember WOWO Fort Wayne,Indiana from when I lived in
Martinsville,Indiana in 1947,at least I think I do.Our school

teacher's
name was Mrs.Rulein,a real nasty ugly looking big old fat mean old
hag,she was.I was in the second grade in school back then.
cuhulin



http://www.tolerance.org/news/article_hate.jsp?id=615


David Eduardo April 26th 05 03:21 AM


"David" wrote in message
...
On Mon, 25 Apr 2005 19:08:22 GMT, "David Eduardo"
wrote:


"David" wrote in message
. ..
On Mon, 25 Apr 2005 10:30:15 -0400, Rich Wood
wrote:

On Mon, 25 Apr 2005 02:07:06 GMT, David wrote:

I thought AM IBOC sounded more like a vaccum cleaner.

Are you suggesting it sucks?

Rich

I'm a Leonard Kahn fan.


Oh, the guy who killed AM radio?


The phase-lock-loop digital tuner did in AM radio. It sounds like
**** when perfectly tuned in.


When Leonard sued and stopped AM stereo, AM still had over 50% of the
audience. By the time the legal issues were solved, AM had half that and
could never recover. Analog AM stereo, in the late 70's, could have helped
keep the balance between AM and FM. The legal machinations stopped this.



Tony Meloche April 26th 05 05:17 AM

David Eduardo wrote:
"David" wrote in message
...

On Mon, 25 Apr 2005 19:08:22 GMT, "David Eduardo"
wrote:


"David" wrote in message
...

On Mon, 25 Apr 2005 10:30:15 -0400, Rich Wood
wrote:


On Mon, 25 Apr 2005 02:07:06 GMT, David wrote:


I thought AM IBOC sounded more like a vaccum cleaner.

Are you suggesting it sucks?

Rich


I'm a Leonard Kahn fan.

Oh, the guy who killed AM radio?

The phase-lock-loop digital tuner did in AM radio. It sounds like
**** when perfectly tuned in.



When Leonard sued and stopped AM stereo, AM still had over 50% of the
audience. By the time the legal issues were solved, AM had half that and
could never recover. Analog AM stereo, in the late 70's, could have helped
keep the balance between AM and FM. The legal machinations stopped this.




Horse hockey. I'm not saying Leonard's suit didn't hamper the
reality of AM stereo, but if it had become a mainstream thing, "stereo
lo-fi" would have never held it's own against "stereo hi-fi" (FM).
Especially when the FM stations went to virtually ALL types of
programming during the seventies. Prior to that, FM was classical,
alternative (including what was known as "AOR") and as a vanguard,
country.

Nobody loves good old AM radio like I do, but there is no accident
to the fact that AM radio today is very largely 24 hour news, sports,
and talk radio formats. That had a whole lot more to do with changing
technology than it did with Leonard Kahn. Classical music will always
sound tremendously better on FM than AM because of the frequency
bandwith. Classical music (as one example) in AM stereo will sound like
stereo AM radio broadcast of classical music. A pale imitation of
stereo FM broadcast of classical music.

Tony

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----= East and West-Coast Server Farms - Total Privacy via Encryption =----

Brenda Ann April 26th 05 05:58 AM


"Tony Meloche" wrote in message
...

Horse hockey. I'm not saying Leonard's suit didn't hamper the
reality of AM stereo, but if it had become a mainstream thing, "stereo
lo-fi" would have never held it's own against "stereo hi-fi" (FM).
Especially when the FM stations went to virtually ALL types of
programming during the seventies. Prior to that, FM was classical,
alternative (including what was known as "AOR") and as a vanguard,
country.

Nobody loves good old AM radio like I do, but there is no accident
to the fact that AM radio today is very largely 24 hour news, sports,
and talk radio formats. That had a whole lot more to do with changing
technology than it did with Leonard Kahn. Classical music will always
sound tremendously better on FM than AM because of the frequency
bandwith. Classical music (as one example) in AM stereo will sound like
stereo AM radio broadcast of classical music. A pale imitation of
stereo FM broadcast of classical music.

Tony



There is absolutely no reason why AM stereo could not be just as high a
fidelity as FM stereo, and in fact was in many cases. What gives AM
broadcasting the characteristic 'telephone quality' sound it has is mostly
the receiver. There is some pre-transmitter processing to limit the
bandwidth used, but it doesn't need to be there for purposes of transmitting
the signal, only for purposes of limiting said bandwidth. In Portland, we
had several AMS stations with full frequency response (50-15K) just as FM.
And AMS signals didn't degrade the way FM does when in the downtown area or
on the 'dark side' of hills. Admittedly, AM signals can be noisier than FM
on the fringes, but they are better in hilly terrain for the most part than
FM.




[email protected] April 26th 05 06:47 AM

Regarding audio for computers,pick up a PC Magazine www.pcmag.com I
subscribe to the snail mail issues of that magazine and also Smart
Computing magazine. www.smartcomputing.com (I have the magazine
right here on the end table by my couch) for April 26,2005.Bill Machrone
has a good article on page 45 in the magazine about audio for computers
and he provides a website in the magazine to check out.
http://machrone.home.comcast.net/pla...distortion.htm

Comcast originated right here in Jackson,Mississippi.I bet y'all didn't
know that.Enjoy my webtv toy,you say? I do enjoy useing my webtv "toy"
but it is not a toy.I can learn and do all of those computer thingys you
listed in your post,but the thing about that is,those thingys just do
not interest me at all.Did I mention before I bought a new Velocity
Micro,ProMagix tower computer last year from www.velocitymicro.com
and I have broad band internet access? Do you think I am lieing about
that? I never lie about anything.email me and I will forward information
about my computer to you if you want to check it out.I bought my
computer for $1,290.00 and I bought it for one thing and one thing
only,World War Two gaming.My money and my computer and my decision.
cuhulin


Telamon April 26th 05 07:14 AM

In article ,
"Brenda Ann" wrote:

"Tony Meloche" wrote in message
...

Horse hockey. I'm not saying Leonard's suit didn't hamper the
reality of AM stereo, but if it had become a mainstream thing, "stereo
lo-fi" would have never held it's own against "stereo hi-fi" (FM).
Especially when the FM stations went to virtually ALL types of
programming during the seventies. Prior to that, FM was classical,
alternative (including what was known as "AOR") and as a vanguard,
country.

Nobody loves good old AM radio like I do, but there is no accident
to the fact that AM radio today is very largely 24 hour news, sports,
and talk radio formats. That had a whole lot more to do with changing
technology than it did with Leonard Kahn. Classical music will always
sound tremendously better on FM than AM because of the frequency
bandwith. Classical music (as one example) in AM stereo will sound like
stereo AM radio broadcast of classical music. A pale imitation of
stereo FM broadcast of classical music.

Tony



There is absolutely no reason why AM stereo could not be just as high a
fidelity as FM stereo, and in fact was in many cases. What gives AM
broadcasting the characteristic 'telephone quality' sound it has is mostly
the receiver. There is some pre-transmitter processing to limit the
bandwidth used, but it doesn't need to be there for purposes of transmitting
the signal, only for purposes of limiting said bandwidth. In Portland, we
had several AMS stations with full frequency response (50-15K) just as FM.
And AMS signals didn't degrade the way FM does when in the downtown area or
on the 'dark side' of hills. Admittedly, AM signals can be noisier than FM
on the fringes, but they are better in hilly terrain for the most part than
FM.


This is not an AM or FM characteristic but a frequency and polarity one
when it comes down to downtown and hilly environment reception
differences you made in your post.

--
Telamon
Ventura, California

Brenda Ann April 26th 05 08:21 AM


"Telamon" wrote in message
...
In article ,
"Brenda Ann" wrote:

"Tony Meloche" wrote in message
...

Horse hockey. I'm not saying Leonard's suit didn't hamper the
reality of AM stereo, but if it had become a mainstream thing, "stereo
lo-fi" would have never held it's own against "stereo hi-fi" (FM).
Especially when the FM stations went to virtually ALL types of
programming during the seventies. Prior to that, FM was classical,
alternative (including what was known as "AOR") and as a vanguard,
country.

Nobody loves good old AM radio like I do, but there is no accident
to the fact that AM radio today is very largely 24 hour news, sports,
and talk radio formats. That had a whole lot more to do with changing
technology than it did with Leonard Kahn. Classical music will always
sound tremendously better on FM than AM because of the frequency
bandwith. Classical music (as one example) in AM stereo will sound

like
stereo AM radio broadcast of classical music. A pale imitation of
stereo FM broadcast of classical music.

Tony



There is absolutely no reason why AM stereo could not be just as high a
fidelity as FM stereo, and in fact was in many cases. What gives AM
broadcasting the characteristic 'telephone quality' sound it has is

mostly
the receiver. There is some pre-transmitter processing to limit the
bandwidth used, but it doesn't need to be there for purposes of

transmitting
the signal, only for purposes of limiting said bandwidth. In Portland,

we
had several AMS stations with full frequency response (50-15K) just as

FM.
And AMS signals didn't degrade the way FM does when in the downtown area

or
on the 'dark side' of hills. Admittedly, AM signals can be noisier than

FM
on the fringes, but they are better in hilly terrain for the most part

than
FM.


This is not an AM or FM characteristic but a frequency and polarity one
when it comes down to downtown and hilly environment reception
differences you made in your post.


That was sort of my point. The lack of fidelity has nothing at all to do
with the mode of modulation, and everything to do with artificially
restricting factors.



Eric F. Richards April 26th 05 02:28 PM

"Brenda Ann" wrote:


"Tony Meloche" wrote in message
...

Horse hockey. I'm not saying Leonard's suit didn't hamper the
reality of AM stereo, but if it had become a mainstream thing, "stereo
lo-fi" would have never held it's own against "stereo hi-fi" (FM).

[...]

Tony



There is absolutely no reason why AM stereo could not be just as high a
fidelity as FM stereo, and in fact was in many cases. What gives AM
broadcasting the characteristic 'telephone quality' sound it has is mostly
the receiver. There is some pre-transmitter processing to limit the
bandwidth used, but it doesn't need to be there for purposes of transmitting
the signal, only for purposes of limiting said bandwidth. In Portland, we
had several AMS stations with full frequency response (50-15K) just as FM.
And AMS signals didn't degrade the way FM does when in the downtown area or
on the 'dark side' of hills. Admittedly, AM signals can be noisier than FM
on the fringes, but they are better in hilly terrain for the most part than
FM.


In the brief period of broadcast stereo before FM multiplex stereo,
often one channel is carried on AM and the other on FM. I borrowed
one of those receivers in my college days and the AM performance was
astounding. Brenda Ann is right: Most AM receiver designs today
simply ignore fidelity as an issue.

--
Eric F. Richards

"Nature abhors a vacuum tube." -- Myron Glass,
often attributed to J. R. Pierce, Bell Labs, c. 1940

David April 26th 05 05:04 PM

On Tue, 26 Apr 2005 07:28:07 -0600, Eric F. Richards
In the brief period of broadcast stereo before FM multiplex stereo,
often one channel is carried on AM and the other on FM. I borrowed
one of those receivers in my college days and the AM performance was
astounding. Brenda Ann is right: Most AM receiver designs today
simply ignore fidelity as an issue.

That's the FCC's fault. There are too many stations and the
bandwidths (both transmit and receive) have to be narrow or the
splatter would drive the few remaining nut jobs that still listen to
AM away.


Tony Meloche April 26th 05 10:28 PM

Eric F. Richards wrote:



In the brief period of broadcast stereo before FM multiplex stereo,
often one channel is carried on AM and the other on FM. I borrowed
one of those receivers in my college days and the AM performance was
astounding. Brenda Ann is right: Most AM receiver designs today
simply ignore fidelity as an issue.



True enough - any "American Five" of the 1950's gave better AM
performance than the AM tuner in any modern stereo receiver, for
example. But the industry as a whole just didn't invest the time or
effort in making AM as good a broadcast medium as FM, and there was
certainly no consumer demand for it, either - or at least not enough to
make a difference. When CD's came in, I was astonished at how quickly
they swept away vinyl - even quicker than the most optimistic
projections. The consumer market loved them, and that was that. AM
stereo was one of those things that simply didn't "catch on", and as I
said, largely (if not completely) because it was seen, understandably as
"reinventing the wheel".

Tony

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Brian Running April 26th 05 10:44 PM

When CD's came in, I was astonished at how quickly
they swept away vinyl -


As a matter of fact, when CDs came in, it was cassette tapes that they
swept away. Cassettes had been out-selling LPs for several years before
the arrival of CDs. AM stereo sounded as good as, or better than, your
typical cassette tape, to my ears. There's no accounting for popular
tastes!

David April 26th 05 10:49 PM

On Tue, 26 Apr 2005 17:28:53 -0400, Tony Meloche
wrote:

Eric F. Richards wrote:



In the brief period of broadcast stereo before FM multiplex stereo,
often one channel is carried on AM and the other on FM. I borrowed
one of those receivers in my college days and the AM performance was
astounding. Brenda Ann is right: Most AM receiver designs today
simply ignore fidelity as an issue.



True enough - any "American Five" of the 1950's gave better AM
performance than the AM tuner in any modern stereo receiver, for
example. But the industry as a whole just didn't invest the time or
effort in making AM as good a broadcast medium as FM, and there was
certainly no consumer demand for it, either - or at least not enough to
make a difference. When CD's came in, I was astonished at how quickly
they swept away vinyl - even quicker than the most optimistic
projections. The consumer market loved them, and that was that. AM
stereo was one of those things that simply didn't "catch on", and as I
said, largely (if not completely) because it was seen, understandably as
"reinventing the wheel".

Tony

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----


CD's are popular because they don't get scratched. The average person
can't tell the difference between a phone call and FM.


[email protected] April 27th 05 12:12 AM

CD's and DVD's can and often do get scratches.I see them all the time in
the thrift stores here.There are clear flexible plastic covers available
at stores which sell electronics.I use them on my Scotch and Irish music
CD's and my computer CD's.
cuhulin



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