In article
,
Albert Manfredi wrote:

On Mar 12, 1:33*pm, You wrote:

Hey Joe, your knowledge of the CellPhone Technology is only a Couple of
YEARS out of date.... Analog Cellphones do NOT Exist anymore and unless
you have the "RIGHT" (Expensive) Equipment your not going to be
listening in on ANY GSM or TDM Cellphones any time soon.....

Agreed on analog.

But AT&T mobile, for example, uses GSM. And GSM, at least through
2.5G, uses TDM as its RF physical layer..

Bert

So, The OP still isn't going to be listening in on any conversations....
UNLESS, he has some fairly sophisticated, and EXPENSIVE receivers, more
on the NSA's capability.