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RayZ
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re: Prisons and cell phones
RayZ   5/24/2011 1:55:22 PM
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There is of course a security concern, but the primary concern is protecting the lucrative monopoly that the prison system has on phone usage.

Bob Lacovara
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re: Prisons and cell phones
Bob Lacovara   5/23/2011 5:16:36 PM
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hm, Why do you worry about privacy on a radio--that is, a cell phone? The stuff is transmitted in the clear for the most part. It doesn't take much to receive cellular transmissions, many software defined radios will do this for you. If you need privacy for a conversation (and my feeling is that if you want it, you should have it) then you need to take steps to guarantee your own encryption.

_hm
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re: Prisons and cell phones
_hm   5/23/2011 2:19:10 AM
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Will this instrument also listen to cell phones not used by jail inmates? Is use of this instrument privacy concern? How if common citizen uses this to monitor some other fellow citizen or police?

bobbyh255
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re: Prisons and cell phones
bobbyh255   5/19/2011 2:41:35 PM
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I have used this product and it has its flaws, yes it does work but its acuracy is not all that and my work 800 Mhz radio as well as the Microwave sets it off.

old account Frank Eory
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re: Prisons and cell phones
old account Frank Eory   5/18/2011 5:55:42 PM
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Since the U.S. has by far the largest per capita prison population of any nation, there should be a huge market for this device.

agk
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re: Prisons and cell phones
agk   5/18/2011 10:27:39 AM
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Illegal cell phone detector needs a receiver of all the bands of operating frequencies, a decoder,and data storage system. The software is to be so advanced that it can decode any calls received and transmitted.Quite a specific application.

Sheetal.Pandey
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re: Prisons and cell phones
Sheetal.Pandey   5/18/2011 10:13:38 AM
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Wow! Its amazing to see how in today's world, the technology can be used in almost all areas.



Radio
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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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