Value of Alert Tones
mmos...@my-deja.com
you do without them? Are they really helpful?
Trying to decide on which model to Purchase.
.\M
Sent via Deja.com http://www.deja.com/
Before you buy.
HOST GSTD Randy
lot of background noise or a weak signal. Many times the receiving party cannot
hear your initial voice message whereas a call tone can be heard.
When our family goes out, we usually take three radios with us. Each is set to
a different call tone. We can immediately recognize who is calling without
having to ask.
The new Motorola's have multiple call tones. A very useful feature when you
need it.
Randy
Larry Swinney
break through at the fringes of FRS range when a voice call will break up or
not be heard at all. I won't buy a radio without alert tones. I also noticed
that Sears has reduced the price of the AV 314 from 99 dollars to 69
dollars. If I didn't already have 2 units, I would've bought another one.
Larry
<mmos...@my-deja.com> wrote in message news:8pdkrm$qge$1...@nnrp1.deja.com...
Jason T. Mangiafico - SPAMMERS SEND IT RIGHT OVER
button for no reason at all just for the fun of it? They like to hold it
down for a long time...
In article <8pdkrm$qge$1...@nnrp1.deja.com>, mmos...@my-deja.com says...
Brian
through is a little humming thing which others hear, im guessing its the
vibrating thing for others with the other vibrating cobra radios. i cant
seem to get any tones to play instead, i dont think it has any :( i got it
cause the antenna was cool, a flip up and down, weather, and the cool look
and water res. I just imagined the call button would call out tones :(
"Jason T. Mangiafico - SPAMMERS SEND IT RIGHT OVER" <s...@admin.spamcop.net>
wrote in message news:8pgti9$ctt6e$1...@ID-21921.news.cis.dfn.de...
G. M. Alf
wrote:
>my cobra 310WX doesnt have tones. when i hit the call button all that goes
>through is a little humming thing which others hear, im guessing its the
>vibrating thing for others with the other vibrating cobra radios. i cant
>seem to get any tones to play instead, i dont think it has any :( i got it
>cause the antenna was cool, a flip up and down, weather, and the cool look
>and water res. I just imagined the call button would call out tones :(
That buzzing sound gets plenty of attention.
Mike
Theo Antoniou
>>> The alert tones seem to break through at the fringes of FRS range
when a voice call will break up or not be heard at all.
Interesting! So you are saying that a RF signal carrying an
audible alert tone will travel further than a RF signal carrying
audible voice? Got some experiments to prove this?
In article <yvOu5.119$%f1.1...@nnrp3.sbc.net>,
--
Theo Antoniou
Qrm2000
>audible alert tone will travel further than a RF signal carrying
>audible voice? Got some experiments to prove this?
Hi, Theo. I've heard this happen numerous times while monitoring FRS. You can
hear the call tones for distant stations, but can barely hear the voice
modulation. Apparently on some models, the tones are of much higher volume
than the voice. I know it sounds crazy on FM, but it's happened to me too many
times to be a "fluke".
Best regards,
QRM
Don K.
>
> >>> The alert tones seem to break through at the fringes of FRS range
> when a voice call will break up or not be heard at all.
>
> Interesting! So you are saying that a RF signal carrying an
> audible alert tone will travel further than a RF signal carrying
> audible voice? Got some experiments to prove this?
It has to do with the average audio power and the response of the human
ear, not RF power.
Obviously a pure sine wave with a given amplitude has more average audio
power than the average power of a voice signal with the same peak amplitude
because the voice is varying in amplitude. Additionally the human ear is
more sensitive to certain frequencies. Therefore a single alert tone at
the right frequency will sound louder than a human voice with the same
average audio power.
For an example, tune into the local TV commercials that come on after
midnight where they increase the average audio power without exceeding
the modulation limits.
Don K.
Theo Antoniou
pay to scream really really loud into your radio when you
know someone is in a fringe area. :>
In article <20000910224544...@ng-ca1.aol.com>,
--
Theo Antoniou
I see your point. We'll add a button that when pressed, will add a 1K
Hz tone to the microphone input. Marketing I'm sure will call it
a "Range Extender Button".
megh...@hotmail.com
> > So you are saying that a RF signal carrying an
> >audible alert tone will travel further than a RF signal carrying
> >audible voice? Got some experiments to prove this?
> hear the call tones for distant stations, but can barely hear the
> voice modulation.
This happens when the carrier isn't efficiently modulated by the voice.
A good speech processor can make an amateur sound a lot louder and
clearer (without using extra bandwidth), sometimes unpleasantly so, but
it's useful for working long distance.
FM, when done well, can sometimes nearly make SSB not worth the effort
(IMHO).
*MegHz*
Qrm2000
>If you believe that to be true, then I guess it would
>pay to scream really really loud into your radio when you
>know someone is in a fringe area. :>
>
Maybe it's the frequency of the call tones that helps the range. My voice is
too low.... :)
Q
R
M
John Vassel
"Qrm2000" <qrm...@aol.com> wrote in message
news:20000912043839...@ng-fv1.aol.com...
days, had an ex bro-in-law who had his CB peaked, and twisted,
manipulated...etc... all to his voice, but not so much as to interfere with
TV, Radio, Phones..etc.
Then his WIFE got on......
John
Jason T. Mangiafico - SPAMMERS SEND IT RIGHT OVER
[...]
>Try a different channel.
good idea!
Jason T. Mangiafico - SPAMMERS SEND IT RIGHT OVER
[...]
>Try a different channel.
good idea, but sooner or later you're just going to end up with some more
kids doing the same thing. It always happens.
Qrm2000
>tune into the local TV commercials that come on after
>midnight where they increase the average audio power without exceeding
>the modulation limits.
>
I agree, Don. But what's this "after midnight" stuff?
I think they do the commercials that way all day! :)
QRM
Qrm2000
>> It has to do with the average audio power and the response of the
>human
>> ear, not RF power.
>>
>From: Theo Antoniou
> We'll add a button that when pressed, will add a 1K
>Hz tone to the microphone input. Marketing I'm sure will call it
>a "Range Extender Button".
>
>
LOL. Re-print the advertising to make it "2.5 miles"!
Seriously, thanks to Theo and Don for working out the reason for the apparent
range boost when using call tones.
QRM
lagniappe
Theo Antoniou <theoan...@my-deja.com> wrote:
>
> >>> The alert tones seem to break through at the fringes of FRS range
> when a voice call will break up or not be heard at all.
>
> Interesting! So you are saying that a RF signal carrying an
> audible alert tone will travel further than a RF signal carrying
> audible voice? Got some experiments to prove this?
>
He didn't really say "carry further", but it is
certainly reasonable that it could "work better" in
marginal conditions. Since the call tone is internally
generated, it can be set for max allowable deviation
on the FM signal. In the case of voice, the amplitude
varies greatly, and will always result in an average
deviation less than peak. Also, the tone may be more
"intelligible" because there is no need to recognize
speech.
Martin