RadioBanter - View Single Post - FCC Regualtions & Public Entities Policies

November 1st 03, 01:35 AM

(Hans K0HB) wrote in message . com...
(Len Over 21) wrote

In article ,
(Hans K0HB) writes:

Since a
cell phone transmits a signal even when not placing a call, they can
require that the unit be turned off at all times while on the
premises.

It does?

Yes, Lenover, it does.

To which question do you answer?

Transmitting a signal even when its not placing a call?

Requirement to turn off a -lawfully- allowed RF device?

Hopefully not yes to both.

Oh, yes, the receiver's Local Oscillator "transmits" a
picayune picoWatt or so...

And much more than the picayunish oscillator leakage you allude to (if
the receiver is even so crude as to have an actual Local
Oscillator)......

Instead of the "DX" oscillator?

I've heard of cell site conmfirmation from 27 nm.

Thank goodness cell phones don't require a knowledge of Morse Code.

It would have been a monumental flop.

As soon as a cell phone is powered up it immediately establishes radio
communications with the MTSO over the control channel, comparing
SID's, negotiating a registration request, and other similar
housekeeping chores.

Just relax and call it handshaking.

This radio communications occurs even if you
never actually place an outgoing call or recieve an incoming call.

Doesn't even rate a "duh!"

That's why you find guys at the other end of the tunnel standing by
with computer controlled "law enforcement" scanners logging all the
codes as you pop out the other side and handshake with the local cell
site.

Then they sell them to Taliban operatives and drug dealers.

Sunuvagun!

With all kind wishes,

de Hans, K0HB

Yeh. Dittos

Brian