Analog systems, remaining channel capacity.

you really think the prezes limo is amps? I cant imagine why, digital is
much more secure as it is.
B.

"Larry W4CSC" <[email protected]> wrote in message
news:[email protected]...
> On Sun, 21 Dec 2003 08:10:17 -0600, Jer <[email protected]> wrote:
>
> >
> >Yes, legacy AMPS is on the way out, and a number of subscription
> >services are going to grind to a halt if they don't upgrade. Highway
> >Master, UPS, and OnStar are often mentioned. Does anyone know if these
> >(or any other) subscription services are considering upgrades to digital?
> >
> Sorry to bust yer bubble, jer, but the current date FCC has said they
> don't HAVE to provide service to AMPS is February 16th, 2008. FCC
> regulations say they MUST provide service until then.
>
> FCC will extend this date UNLESS the carriers can convince them that
> there is no appreciable use on AMPS after that date.
>
> As long as the crypto voice from the President's limo is on AMPS, I'd
> say we're quite safe for a while....(c;
>
>
> Larry W4CSC
>
> NNNN

---

› See More: Analog systems, remaining channel capacity.

Brian Oakley wrote:
> you really think the prezes limo is amps? I cant imagine why, digital is
> much more secure as it is.
> B.

But, with Digital, you would be strapped to the 1x data network or GPRS
network for extra encryption. Basic digital is more secure than basic
AMPS, but because AMPS has much more badwidth, it is much easier to
encrypt the signal yourself, giving you the extra bandwidth.

==AD

On Tue, 30 Dec 2003 15:46:18 -0600, "Brian Oakley"
<[email protected]> wrote:

>But do you actually get the name even with landline caller ID? I thought it
>had to be in the list on your unit to display the actual name of the person
>calling. I thought only the number showed up.
>B
>
Full caller ID in SC shows the name on the telephone account....

On Tue, 30 Dec 2003 15:48:43 -0600, "Brian Oakley"
<[email protected]> wrote:

>you really think the prezes limo is amps? I cant imagine why, digital is
>much more secure as it is.
>B.
>
Government communications doesn't use easily-decoded CDMA or any other
scheme. The only thing it's secure against is the kid with the open
scanner. Government uses crypto voice, deeply encoded into a
white-noise-sounding hiss that low-resolution, low-sample-rate
cellular phone schemes or slow digital modes could never keep up with.
So, they use FM radios....AMPS.

Larry,

Spread spectrum is what the government uses for really secure
communication. It is actually somewhat like CDMA according to the folks I
talked to. And before the communication hits the air, it is, of course,
converted to digital and it is encrypted.

No, they aren't using what VZW and Alltel are using, but the concept is
similar, but much better.

Secret Service was using Motorola DES, which does sound like an
unsquelched FM radio, It was on high band VHF FM two-way radio channels.
There was a serious loss of range issue which left a lot of communications
going in the clear. I haven't monitored them for quite a while, but the
sources I have indicate that there wouldn't be much point any more. Dittos
for the FBI.

And, so far as I have seen on the Internet, the schemes used by VZW and
Alltel haven't been broken with freeware as has GSM. I'm not worried about
my own stuff, but if CDMA cellular is really easy to break, could you
provide some details?

I am sure the limo has an AMPS phone, but it is just for backup.

--
Thomas M. Goethe

"Larry W4CSC" <[email protected]> wrote in message
news:[email protected]...
> On Tue, 30 Dec 2003 15:48:43 -0600, "Brian Oakley"
> <[email protected]> wrote:
>
> >you really think the prezes limo is amps? I cant imagine why, digital is
> >much more secure as it is.
> >B.
> >
> Government communications doesn't use easily-decoded CDMA or any other
> scheme. The only thing it's secure against is the kid with the open
> scanner. Government uses crypto voice, deeply encoded into a
> white-noise-sounding hiss that low-resolution, low-sample-rate
> cellular phone schemes or slow digital modes could never keep up with.
> So, they use FM radios....AMPS.
>
>

Larry W4CSC wrote:
> On Tue, 30 Dec 2003 15:46:18 -0600, "Brian Oakley"
> <[email protected]> wrote:
>
>
>>But do you actually get the name even with landline caller ID? I thought it
>>had to be in the list on your unit to display the actual name of the person
>>calling. I thought only the number showed up.
>>B
>>
>
> Full caller ID in SC shows the name on the telephone account....

It's too bad that the United States didn't adopt the names used in
Canada. Canada refers to Call Display as the number portion of Caller
ID, Name Display as the Name portion of Caller ID. Then there wouldn't
be this confusion on what "Caller ID" entitles. But I agree, if we can
send multimedia files to mobile phones, why can't we send a small name
along with a phone number?

==AD

Aboutdakota wrote:

>
>
> Larry W4CSC wrote:
>
>> On Tue, 30 Dec 2003 15:46:18 -0600, "Brian Oakley"
>> <[email protected]> wrote:
>>
>>
>>> But do you actually get the name even with landline caller ID? I
>>> thought it
>>> had to be in the list on your unit to display the actual name of the
>>> person
>>> calling. I thought only the number showed up.
>>> B
>>>
>>
>> Full caller ID in SC shows the name on the telephone account....
>
>
> It's too bad that the United States didn't adopt the names used in
> Canada. Canada refers to Call Display as the number portion of Caller
> ID, Name Display as the Name portion of Caller ID. Then there wouldn't
> be this confusion on what "Caller ID" entitles. But I agree, if we can
> send multimedia files to mobile phones, why can't we send a small name
> along with a phone number?
>
> ==AD
>


I've always heard it referred to as Basic or Enhanced CID service. I
agree with you, the Enhanced level of service would be helpful. If a
number matched with a personal directory entry, that could take priority
over the name sent with the number. SWBT offers each service level at
differing rates, why can't a wireless provider?

--
jer email reply - I am not a 'ten' ICQ = 35253273
"All that we do is touched with ocean, yet we remain on the shore of
what we know." -- Richard Wilbur

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In alt.cellular Daoler <daoler_no_sp@m_poczta.onet.pl> wrote:
>> Just out of curiousity, which tri-modes will they be supporting?
>> GSM? TDMA? CDMA? 850Mhz cellular? 1900MHz PCS?
>>
>
> 1900MHz PCS is actually GSM;

No. 1900MHz PCS could also be CDMA or TDMA.

> and GSM is one of the TDMA systems
> CDMA works on 850MHz band

Tell that to Sprint and Verizon. Both use CDMA on 1900 MHZ in the US.
Verizon also uses 800 MHz.

--
JustThe.net Internet & New Media Services
22674 Motnocab Road * Apple Valley, CA 92307-1950
Steve Sobol, Geek In Charge * 888.480.4NET (4638) * [email protected]

On Tue, 30 Dec 2003 23:21:19 -0500, "Thomas M. Goethe"
<[email protected]> wrote:

>
> I am sure the limo has an AMPS phone, but it is just for backup.
>
Y'all boys can listen to my AMPS from my limo with any scanner. We
talk dirty about keyboard repair all the time.....(c;

Oh......wow......the clicking noise from the keyboard is LOUD this
morning after the NYE party until 4AM......(c;