NO, NOT BS. I have a Nextel. When I talk, the speech is digitized,
then broadcast as data to a Nextel repeater. It is then rebroadcast
over the network as data with a header identifying the Nextel phone
that it is going to. All the Nextel phones on the network receive the
data. Only the intended recipient phone decodes the data back into
speech, the other nextel phones discard that data. It works that way
for direct connect (Walkie Talkie) and true phone traffic. A scanner
can recieve the data, and play it over the speaker, but it sounds like
FAX tones and static.
If my call is going to a land line phone, it is decoded into speech at
the repeater and broadcast over land lines as voice data. The scanner
does not pick up the land line signal, therefore can not listen in.
The older cell phones, like the one my wife has, are still analog. A
scanner CAN recieve and play that as voice over the speaker. Her phone
is not secure. Eventually, dur to lack of available radio frequencies,
ALL cell phones will have to go digital. When she gets her next phone,
it will be capable of working in both modes, analog AND digital. When
the service provider changes their system to digital, she will never
know. Only those with analog ONLY phones will have to get new phones.
Many, but not all, providers have changed to digital in our area.
By the way, you need to improve your vocabulary. If BULLSHIT is the
only way you can express yourself, you need help. There is a section
in the Reader's Digest called "It Pays To Increase Your Word Power". I
suggest that you start using it.
PS Of course the NSA can recieve Nextel and all other cell phone
traffic, but regular people cannot.