Radio "NR" Button
|/Slantman|/
The one in our '92 LeBaron doesn't seem to do much, either.
SL6 Daniel
In article <4cvegh$p...@ddi2.digital.net>, Alan Adcox <aad...@digital.net> wrote:
> I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
> "NR" button that I can not determine its function. I though it might
> stand for "Near Radio" and be an antenna attenuator for strong signals
> but it seem to have no effect on weak or strong signals.
>
> Thanks,
> Alan
>
> aad...@digital.net
Alan Adcox
Jon N. Steiger
: Noise Reduction.
: SL6 Daniel
: In article <4cvegh$p...@ddi2.digital.net>, Alan Adcox <aad...@digital.net> wrote:
: > I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
Does the radio come with a tape deck as well? If I'm thinking of the
same thing you are, I believe that button is for reducing background hiss
on cassette tapes. I have found it to make a pretty big difference,
especially with older tapes. (Dolby Noise Reduction, I believe...)
-Jon-
.-------------------------------------------------------------------------.
| Jon Steiger == DoD# 1038 == USUA# A46209 == NMA# 117376 == KotWitDoDFAQ |
| stei...@cs.fredonia.edu && http://www.cs.fredonia.edu/~stei0302/ |
| '96 Dakota SLT V-8, '91 FZR600R /* Just another mangy hacker */ |
`-------------------------------------------------------------------------'
Jerry AMC
: In article <4cvegh$p...@ddi2.digital.net>, Alan Adcox
<aad...@digital.net> wrote:
: > I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
: > "NR" button that I can not determine its function. I though it might
: > stand for "Near Radio" and be an antenna attenuator for strong signals
: > but it seem to have no effect on weak or strong signals.
: >
>>>> Does the radio come with a tape deck as well? If I'm thinking of
the
same thing you are, I believe that button is for reducing background hiss
on cassette tapes. I have found it to make a pretty big difference,
especially with older tapes. (Dolby Noise Reduction, I believe...)
<<<<<
It is Noise Reduction but it is not Dolby. Dolby encodes and decodes the
tape signal to reduce hiss. NR de-emphasizes high frequency response to
reduce hiss. If you are making tapes just for that car radio, it's better
to record without Dolby on a normal bias, Type I tape. If you hear any
hiss, especially during quiet passages, then give the NR button a push.
Otherwise leave it off.
Jerry Whittle
Belleville, Illinois, USA
Jerr...@aol.com
January 10, 1996
David Mann
stei...@cs.fredonia.edu (Jon N. Steiger) wrote:
:\|/Slantman\|/ (das...@ursula.uoregon.edu) wrote:
:: Noise Reduction.
:: The one in our '92 LeBaron doesn't seem to do much, either.
:
:
:: In article <4cvegh$p...@ddi2.digital.net>, Alan Adcox <aad...@digital.net>
wrote:
:
:: > I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
:: > "NR" button that I can not determine its function. I though it might
:: > stand for "Near Radio" and be an antenna attenuator for strong signals
:: > but it seem to have no effect on weak or strong signals.
:: > Thanks,
:: > Alan
:: >
:: > aad...@digital.net
:
:
: Does the radio come with a tape deck as well? If I'm thinking of the
:same thing you are, I believe that button is for reducing background hiss
:on cassette tapes. I have found it to make a pretty big difference,
:especially with older tapes. (Dolby Noise Reduction, I believe...)
:
It also will blend some of the upper audio frequencies on FM signals to cut
back on poor sound when the stereo signal is weak.
*****************************************************************************
Kodiak Services Company - Energy Reduction Audits - Lighting Designs for
Commercial, Industrial, Government Properties. We do our work ANYWHERE.
EPA Green Lights Surveyor Ally. Call David "Bear" Mann (503) 240-1831
FAX (503) 289-7384 Internet: jac...@teleport.com -or- FurFa...@aol.com
*****************************************************************************
CJ Rabe
> I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
> "NR" button that I can not determine its function. I though it might
> stand for "Near Radio" and be an antenna attenuator for strong signals
> but it seem to have no effect on weak or strong signals.
The NR button is for noise reduction on tapes. Since Chrysler apparently
didn't want to pay a royalty to Dolby Labs, they used "Dynamic Noise
Reduction" in their car radio/tape machines. I believe DNR is a trademark
of National Semiconductor. If you play a quiet tape that has been
"dolbyized" and toggle the button you should be able to hear the difference.
Even though the manual says it works for the radio as well, I can hear no
difference on either AM or FM. BTW, mine is in a '91 Dynasty and it is
discussed in the owner's manual.
Carlyle
PS: Your assumption about it attenuating the signal is not that far off
the mark. All radio receivers have a circuit called "AVC" or "AGC" that
manipulates the sensitivity of the receiver in response to the strength
of the signal. It is not a user adjusted control however. But since
this is not a radio newsgroup...
--
--
"Very funny Scotty, now beam down my pants."
--
Aubrey Mansfield
>
> In article <DKyG2...@cs.fredonia.edu>,
> stei...@cs.fredonia.edu (Jon N. Steiger) wrote:
> :\|/Slantman\|/ (das...@ursula.uoregon.edu) wrote:
> :: Noise Reduction.
> :: The one in our '92 LeBaron doesn't seem to do much, either.
> :
> :: SL6 Daniel
> :
> wrote:
> :
> :: > I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
> :: > "NR" button that I can not determine its function. I though it might
> :: > stand for "Near Radio" and be an antenna attenuator for strong signals
> :: > but it seem to have no effect on weak or strong signals.
> :: > Thanks,
> :: > Alan
> :: >
> :: > aad...@digital.net
> :
> :
> : Does the radio come with a tape deck as well? If I'm thinking of the
> :same thing you are, I believe that button is for reducing background hiss
> :on cassette tapes. I have found it to make a pretty big difference,
> :especially with older tapes. (Dolby Noise Reduction, I believe...)
> :
>
> It also will blend some of the upper audio frequencies on FM signals to cut
> back on poor sound when the stereo signal is weak.
>
> *****************************************************************************
> Kodiak Services Company - Energy Reduction Audits - Lighting Designs for
> Commercial, Industrial, Government Properties. We do our work ANYWHERE.
> EPA Green Lights Surveyor Ally. Call David "Bear" Mann (503) 240-1831
> FAX (503) 289-7384 Internet: jac...@teleport.com -or- FurFa...@aol.com
NR does stand for 'Noise Reduction" and it will reduce the hiss on tapes - new or old. It
was designed, however, to playback tapes that were recorded using a Noise Reduction (such as
Dolby)system. Unless you're playing such a tape you shouldn't use it. The reason is that
it reduces the high frequency playback capability by "cutting off" frequencies above a
certain level. This is OK when playing back a NR Recorded tape because the frequency range
has been compressed but on a normally recorded tape all you doing is cutting out the high
end.
Hope this helps.
Aubrey
Marc Konchinsky
> I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
> "NR" button that I can not determine its function. I though it might
> stand for "Near Radio" and be an antenna attenuator for strong signals
> but it seem to have no effect on weak or strong signals.
>
> Thanks,
> Alan
>
> aad...@digital.net
The button to which you are referring to is a shortening of "Noise
Reduction". You cassette deck is equiped with DolbyŽ Noise Reduction.
Find a cassette around the house that was recorded with DolbyŽ, put it in
your deck on "play". Listen to the sound, then press the button, a little
"NR" should light up on the display, and the sound should become a little
more compressed and have less background noise.
Most commercially produced cassettes are recorded with DolbyŽ, for
instance, if you went to K-Mart and bought a pre-recorded tape of Mariah
Carey, it would have DolbyŽ. Most modern home-audio cassette decks are
equipped with DolbyŽ as well.
Hope this helps....
--
Marc Konchinsky, 08-02-72 ***SNOWED-IN in Pennsylvania--30" YIKES!***
Chief Party Arranger for Great Times D.J. Entertainment (Reading, PA)
Sales Consultant for Mente Chrysler/Plymouth/Dodge (Kutztown, PA)
'86 Dodge Caravan 4 cyl./stick-shift, w/75K & a tempermental Sony CD Player
Macintosh Performa 636CD & Newton MessagePads 100 & 120/2.0 (Kewl!)
Glenn A. Thibert
>
>I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
>"NR" button that I can not determine its function. I though it might
>stand for "Near Radio" and be an antenna attenuator for strong signals
>but it seem to have no effect on weak or strong signals.
I believe it stands for Noise Reduction. Dolby is usually used for cassette
tapes to remove the background hiss noise, and sometimes NR is used for radios
too to reduce the hiss or noise generated by less then perfect reception.
--
+--------------------------------------------------------+
|Glenn A. Thibert | Star Trek Fan |
|Monsanto Co. | Lotus Notes Administrator |
|gat...@camlot.monsanto.com | Helluva Guy |
+--------------------------------------------------------+
Brad Schempf
: I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
: stand for "Near Radio" and be an antenna attenuator for strong signals
: but it seem to have no effect on weak or strong signals.
: Thanks,
: Alan
My '89 Voyager has the same thing. According to the manual it stands for
"Noise Reduction", but I've never found it to have much effect. No, it
doesn't have a tape deck.
Brad
|/Slantman|/
installed a radio from a wrecked '94 Caravan. The Caravan's radio has a
button with the Dolby Double-D symbol on it.
But the original non-tape radio in the LeBaron had an NR button. Go figure.
SL6 Daniel
Alan Adcox
button is just a AM/FM stereo, no cassette deck. So that rules out the
Dolby noise reduction.
AA
Tom Mako
>
>I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
>"NR" button that I can not determine its function. I though it might
>stand for "Near Radio" and be an antenna attenuator for strong signals
>but it seem to have no effect on weak or strong signals.
>
>Thanks,
>Alan
>
>aad...@digital.net
>
system...
hope this helps.
Russ Panneton
> I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
> "NR" button that I can not determine its function. I though it might
> stand for "Near Radio" and be an antenna attenuator for strong signals
> but it seem to have no effect on weak or strong signals.
I believe it's "noise reduction," used to reduce impulse-type noise on
AM and blend the channels together in FM to reduce weak-station hiss.
On tape decks it refers to Dolby(tm) processing.
--
Russ Panneton russ.p...@xilinx.com
Glenn A. Thibert
>
>button is just a AM/FM stereo, no cassette deck. So that rules out the
>Dolby noise reduction.
I know. My message answered it exactly. Here again is the quote from my
reply:
" I believe it stands for Noise Reduction. Dolby is usually used for
cassette tapes to remove the background hiss noise, and sometimes NR is used
for radios too to reduce the hiss or noise generated by less then perfect
reception."
Notice I say Dolby is normally used on cassette tapes, but noise reduction
is also used for some radios. I wasn't trying to say your radio has dolby or
a tape, just that it's typically used with tapes but in your case it's for
radio. It basically cuts the high end frequencies to lesson the noise.
Lloyd R. Parker
: I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
: "NR" button that I can not determine its function. I though it might
: stand for "Near Radio" and be an antenna attenuator for strong signals
: but it seem to have no effect on weak or strong signals.
: Thanks,
: Alan
It stands for "noise reduction," a technology similar to Dolby.
Jerry AMC
>Just to clarify things, the radio in my 91 Caravan that has the "NR"
>button is just a AM/FM stereo, no cassette deck. So that rules out the
>Dolby noise reduction.
>
My comment belongs more to a rec.stereo group but here it goes anyway. At
one time there was Dolby for FM radio. It didn't catch on however.
Dolby and NR are not one and the same. Dolby uses an encoding and decoding
scheme to reduce hiss. NR just attenuates some of the higher frequencies
to reduce hiss. Using a tape encoded in Dolby B or C in a cassette
without Dolby capabilities produces a bright, tinny sound. Dolby cassette
decks have a double D button on them. Using NR on such a tape may reduce
some of the brightness; however, it still does not sound like it should.
If your cassette does not support Dolby, you should record your tapes
without Dolby. If you hear some hiss (either in the cassette or radio),
use NR. Otherwise keep it off.
Jerry Whittle
Belleville, Illinois, USA
Jerr...@aol.com
January 11, 1996
Tom Kunsitis
A >stand for "Near Radio" and be an antenna attenuator for strong signals
A >but it seem to have no effect on weak or strong signals.
My 89 Voyager radio has the same button. I believe it stands for "Noise
Reduction". I've noticed that radios with tape decks from the same era
have the button in the same place where it is used for Dolby noise
reduction. I am guessing that they only had one radio design for that
year and did not want to rearrange the buttons just to add a tape deck.
The NR button does absolutely nothing on my radio other than light the NR
indicator on the face plate.
--- WinQwk 2.0b#1375
Daniel A. Johnson
: : > I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
: : > "NR" button that I can not determine its function. I though it might
: : > stand for "Near Radio" and be an antenna attenuator for strong signals
: : > but it seem to have no effect on weak or strong signals.
It is dolby noise reduction for the tape deck. With my tape player, it
definitely has an effect on the sound of tapes, especially some of my
home-made ones.
Some of the switches/buttons have differing functions depending on whether
you are using the radio or the tape player at the time. I don't know if
NR has any function when the radio, not the tape deck is operating.
Dan
Jerry Whittle
Daniel A. Johnson wrote:
>
> : : > I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
> : : > "NR" button that I can not determine its function. I though it might
> : : > stand for "Near Radio" and be an antenna attenuator for strong signals
> : : > but it seem to have no effect on weak or strong signals.
>
> It is dolby noise reduction for the tape deck. With my tape player, it
> definitely has an effect on the sound of tapes, especially some of my
> home-made ones.
If the button says NR it is for Noise Reduction but not DOLBY noise reduction. Dolby either
says Dolby on the button or has a double (and reversed) D symbol.
Dolby has a encoding/decoding process to reduce noise. You record the tape with Dolby B or
C and then you must use a Dolby equipped tape deck to properly decode the tape. BTW: There
were a few radio stations and radios that used Dolby a few years ago; however, it never
caught on.
NR noise reduction just cuts out or reduces some of the higher frequencies. This gets rid
of hiss at the expense of true fidelity. No tape encoding is needed for it to 'work'.
Jerry Whittle
Belleville, Illinois, USA
My minivan is a Voyager and bicycle is a Trek.
May 8, 1996
Tom Ruta
fn...@aurora.alaska.edu (Daniel A. Johnson) wrote:
>: : > I own a 91 Caravan with a factory AM/FM stereo radio. The radio has a
>: : > "NR" button that I can not determine its function. I though it might
>: : > stand for "Near Radio" and be an antenna attenuator for strong signals
>: : > but it seem to have no effect on weak or strong signals.
>
>It is dolby noise reduction for the tape deck. With my tape player, it
>definitely has an effect on the sound of tapes, especially some of my
>home-made ones.
>
>
I'd bet that it is NOT Dolby (tm). It may be noise
reduction, but it sure isn't Dolby. Dolby Labs is
absolutely fervent about all their NR technology bearing
thier name and symbol.
Bottom line: if it doesn't have the "Double D" icon beside
it, then it is not Dolby's circuitry.
Tom
Ken Bessler (KG0WX)
My voyager's "NR" button simply cuts the hissing from both the tape AND
the radio. It may not be Dolby, but it does work, hence I leave it off
(sounds better off)....
--
Ken Bessler
Design Services Company
http://www2.southwind.net/~kg0wx
Model railroad designing
j...@usa.pipeline.com
On May 13, 1996 21:40:19 in article <Re: Radio "NR" Button>,
'ru...@cadvision.com (Tom Ruta)' wrote:
>It is dolby noise reduction for the tape deck. With my tape player, it
>>definitely has an effect on the sound of tapes, especially some of my
>>home-made ones.
>>
>>
>I'd bet that it is NOT Dolby (tm). It may be noise
>reduction, but it sure isn't Dolby. Dolby Labs is
>absolutely fervent about all their NR technology bearing
>thier name and symbol.
>
>Bottom line: if it doesn't have the "Double D" icon beside
>it, then it is not Dolby's circuitry.
>
>Tom
highest frequencies. It works on the entire system, not just tapes. It is
basically a waste. Try it, it even works on the radio. It is on all the
Chryslers with or without a tape.
Pierce Leonberger
j...@usa.pipeline.com wrote:
: On May 13, 1996 21:40:19 in article <Re: Radio "NR" Button>,
--
Then how do you turn it on when he radio is playing? On my 1996 Stratus
the dolby button is the same as the #1 station preset button. If I press that
button while radio is on I go to that station and dolby is not enabled.
Later,
Pierce
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Thru the gateway, off the repeater, over the T-3 backbone, nothing but 'Net
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Edgar E. Blom® - I'm Curious -
On 14 May 1996 14:41:59 GMT, acec...@umiacs.umd.edu (Pierce Leonberger)
wrote:
>
>Then how do you turn it on when he radio is playing? On my 1996 Stratus
>the dolby button is the same as the #1 station preset button. If I press that
>button while radio is on I go to that station and dolby is not enabled.
Dolby on that stereo ONLY applies to the tapedeck.
PS: on my Chrysler Stratus, in Europe, it's button 4, with the double D
sign.
Edgar E. Blom
*** I wish I was like you, easily amsused ***
Glenn A Thibert
Taken from Pierce Leonberger's log...
>Then how do you turn it on when he radio is playing? On my 1996 Stratus
>the dolby button is the same as the #1 station preset button. If I press
that
>button while radio is on I go to that station and dolby is not enabled.
That's a different radio then what they are talking about and it's probably
not possible. Does yours say Dolby or just NR? Mine has a separate NR button
that is generic noise reduction for tape or radio, but is not dolby and is not
very useful.
--
+--------------------------------------------------------+
|Glenn A. Thibert | Lotus Notes Administrator |
|Monsanto Co. | Trekker Extraordinaire |
|gat...@camlot.monsanto.com | Helluva Guy |
+--------------------------------------------------------+