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Yes, the telephone audio IC. You get a good idea of the complete telephone circuit by combining the three datasheets. The UTC1062 datasheet also shows which circuit parts should be unpowered in on-hook state.There is a third "IC" UTC1062 underneath inside the little metal "box".
No problem, just a suspicion, see post #32.What is the real problem?
Ok I see what you mean.
The chip is UTC31002.
**broken link removed**
I will measure later.
There is a third "IC" UTC1062 underneath inside the little metal "box".
Putting paranoia to one side - have you considered it would be easier for someone to plant a bug in the handset than in the phone body?
Brian.
Is it a wireless phone?
Small metal box is normally RF transmitter.
Not sure I follow you there. what is the difference between opening the handset and opening the phone body? If it was bugged the same 'science' would be used in both locations. Why do you think TSCM would distinguish between body and handset?Well the aim here is not to be found, if someone simply opened the headset they would find the extraneous components. Then the game is up.
What's going on here is a good use of science to exploit the telephone to their advantage.
That way during a TSCM sweep it wouldn't be found.
Some background:
I've inspected about 70 of these phones (at the office and a department store)
There's a very similar discussion petering out at https://www.eevblog.com/forum/projects/telephone-eavesdropping/msg667512/#msg667512
in which "Erica" states
I work for a high security government facility. This is were these phones are being used. I am not in the US.
These phones are being used to monitor what the employees are saying in the offices. I believe its being done by a malicious source and is not known by executive management.
Curiously many of the posts have been removed by "Erica"; from memory the first post was very similar to the first post in this thread. Certainly "Erica" became ratty when I pointed out the similarity: https://www.eevblog.com/forum/projects/telephone-eavesdropping/msg669528/#msg669528
You will, no doubt, draw your own conclusions.
Not sure I follow you there. what is the difference between opening the handset and opening the phone body? If it was bugged the same 'science' would be used in both locations. Why do you think TSCM would distinguish between body and handset?
Brian.
You have not answered one of my earlier questions:
Do you think it is ONLY your telephone conversations that are being monitored or do you think the phone is working like a bug all the time, regardless of whether the handset is on or off hook?
There's a very similar discussion petering out at https://www.eevblog.com/forum/projects/telephone-eavesdropping/msg667512/#msg667512
in which "Erica" states
I work for a high security government facility. This is were these phones are being used. I am not in the US.
These phones are being used to monitor what the employees are saying in the offices. I believe its being done by a malicious source and is not known by executive management.
Curiously many of the posts have been removed by "Erica"; from memory the first post was very similar to the first post in this thread. Certainly "Erica" became ratty when I pointed out the similarity: https://www.eevblog.com/forum/projects/telephone-eavesdropping/msg669528/#msg669528
You will, no doubt, draw your own conclusions.
I don't see any harm in her threads.
This must be the can of worms that Edward Snowden had opened.
Maybe it is activated with a Radar Pulse to behave like passive RFID with Analog modulation.
one thing I would not do is dismantle a telephone and fit an expensive and inefficient modified ringer unit and then try to hide a microwave transmitter and receiver within a few metres of it.
So as to help quite a few people judge what topics are worthy of their consideration. Their lives are short, decreasing at 86400s on most days.Are you insane?
Why did you do this?
I also pointed out to EricaS the doubts I have in the story but she insisted that she is telling the truth. I also noticed that she never sleeps, she posts 24 hours a day, it is hard to believe that 'Erica' is one person.
I don't see any harm in her threads.
This must be the can of worms that Edward Snowden had opened.
No, No, No and No.Can the piezo diaphragm in the cavity by itself emit RF if a carrier wave is inputted via the positive or negative wiring? Or must there be an antenna?
This is a legitimate request.
About your request:
Several people told you that office phones are different, they have an option for the admin to listen to the sound in your office when the phone is on the hook. The description of the inside of your phone supports that possibility too.
I wish you didn't remind me that my remaining days, hours, minutes and seconds of my life are running out since I am 70 years old. I hope I live well for another 20 years.So as to help quite a few people judge what topics are worthy of their consideration. Their lives are short, decreasing at 86400s on most days.
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