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AR15.COM
3/21/2013 5:06:04 PM EDT
..............
3/21/2013 5:07:01 PM EDT
[#1]
Quoted:
My buddy has a cellphone jammer we were playing with.  We decided to turn it on and set his ADT security off a few times.  He doesn't have a landline so it is all set up through GSM.  Well the alarm in the house went off but ADT was never notified because of the GSM signal being jammed.


Jammers jam the receiver portion of a device, not the transmitter.
3/21/2013 5:07:45 PM EDT
[#2]
Quoted:
My buddy has a cellphone jammer we were playing with.  We decided to turn it on and set his ADT security off a few times.  He doesn't have a landline so it is all set up through GSM.  Well the alarm in the house went off but ADT was never notified because of the GSM signal being jammed.


You cant stop the signal.

RIP Mr. Universe
3/21/2013 5:12:10 PM EDT
[#3]
....
3/21/2013 5:13:05 PM EDT
[#4]
Because the landline coming into the house can't be cut.
3/21/2013 5:14:35 PM EDT
[#5]
Quoted:
what if the jammer sends out a signal in the same frequency?


It only jams the receiver not the transmission. If it sent the same signal it wouldn't matter, it would fly off into the atmosphere, if it was powerful enough and directed towards a cell tower, then it would name that frequency on the cell towers receiver.
3/21/2013 5:15:28 PM EDT
[#6]
Quoted:
Quoted:
My buddy has a cellphone jammer we were playing with.  We decided to turn it on and set his ADT security off a few times.  He doesn't have a landline so it is all set up through GSM.  Well the alarm in the house went off but ADT was never notified because of the GSM signal being jammed.


Jammers jam the receiver portion of a device, not the transmitter.




3/21/2013 5:17:57 PM EDT
[#7]
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.

3/21/2013 5:19:22 PM EDT
[#8]
Sounds like your buddy needs to check his landline with ADT...
3/21/2013 5:19:27 PM EDT
[#9]
Quoted:
Quoted:
Quoted:
My buddy has a cellphone jammer we were playing with.  We decided to turn it on and set his ADT security off a few times.  He doesn't have a landline so it is all set up through GSM.  Well the alarm in the house went off but ADT was never notified because of the GSM signal being jammed.


Jammers jam the receiver portion of a device, not the transmitter.






3/21/2013 5:19:45 PM EDT
[#10]



Quoted:



Quoted:

My buddy has a cellphone jammer we were playing with.  We decided to turn it on and set his ADT security off a few times.  He doesn't have a landline so it is all set up through GSM.  Well the alarm in the house went off but ADT was never notified because of the GSM signal being jammed.




Jammers jam the receiver portion of a device, not the transmitter.


This is not correct.



 
3/21/2013 5:19:59 PM EDT
[#11]
Yes but the transceiver must negotiate two way traffic with the cell system for authentication and channel assignment purposes.
3/21/2013 5:21:50 PM EDT
[#12]
I'm sure a Navy or Air Force electronic warfare guy will come along with more knowledge.

I'm just an Army guy who did the EWO course for counter RCIED.
3/21/2013 5:22:42 PM EDT
[#13]
Quoted:

Quoted:
Quoted:
My buddy has a cellphone jammer we were playing with.  We decided to turn it on and set his ADT security off a few times.  He doesn't have a landline so it is all set up through GSM.  Well the alarm in the house went off but ADT was never notified because of the GSM signal being jammed.


Jammers jam the receiver portion of a device, not the transmitter.

This is not correct.
 


Please elaborate
3/21/2013 5:24:09 PM EDT
[#14]
But it's illegal to use a cell phone jammer so there is no way a criminal is going to prevent the alarm from getting to the security company.
3/21/2013 5:24:28 PM EDT
[#15]
Quoted:
Sounds like your buddy needs to check his landline with ADT...


And put up some "Xfinity Home Security" signs so thieves cut the wrong cord.
3/21/2013 5:25:29 PM EDT
[#16]
ADT is terrible, we dropped them and I deal with them regularly at work. They have some GOOD guys working for them don't get me wrong, but response time is pretty bad a lot of times. Lots of their guys show up to every call with the "It's just a false alarm" attitude. Always funny when it turns out to be a real breakin/burglary.

Also I wouldn't be talking publicly about using a jammer.. opsec and all that..
3/21/2013 5:25:33 PM EDT
[#17]
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.




If my buddy calls me at his house and he turns on his jammer, the call will drop and I will not be able to hear him

3/21/2013 5:27:25 PM EDT
[#18]
Quoted:
ADT is terrible, we dropped them and I deal with them regularly at work. They have some GOOD guys working for them don't get me wrong, but response time is pretty bad a lot of times. Lots of their guys show up to every call with the "It's just a false alarm" attitude. Always funny when it turns out to be a real breakin/burglary.


ADT sends their own people?

They just call the police here.
3/21/2013 5:27:30 PM EDT
[#19]
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.



That is not, at all, how it works.

The phone will be knocked off the network and communication will cease.

3/21/2013 5:28:23 PM EDT
[#20]
Quoted:
Quoted:
ADT is terrible, we dropped them and I deal with them regularly at work. They have some GOOD guys working for them don't get me wrong, but response time is pretty bad a lot of times. Lots of their guys show up to every call with the "It's just a false alarm" attitude. Always funny when it turns out to be a real breakin/burglary.


ADT sends their own people?

They just call the police here.


They have some response patrols around here, or they sub-contract them. LOTS of alarm response companies in Vegas, so many that it's hard to keep up with all of them who respond around here sometimes.
3/21/2013 5:28:26 PM EDT
[#21]
Quoted:
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.




If my buddy calls me at his house and he turns on his jammer, the call will drop and I will not be able to hear him



For the record, you are breaking the law, and it's a law that has some serious teeth.  Huge fines and possibly even felony jail time if you happened to drop a 911 call.
3/21/2013 5:28:30 PM EDT
[#22]
..
3/21/2013 5:29:32 PM EDT
[#23]
Quoted:
Quoted:
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.




If my buddy calls me at his house and he turns on his jammer, the call will drop and I will not be able to hear him



For the record, you are breaking the law, and it's a law that has some serious teeth.  Huge fines and possibly even felony jail time if you happened to drop a 911 call.


Get outta here with your facts. OP can potentially burn himself if he likes
3/21/2013 5:30:26 PM EDT
[#24]
Quoted:
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.



That is not, at all, how it works.

The phone will be knocked off the network and communication will cease.



That's how it worked with certain systems the Army has.  We got bored in the motor pool one night and tried it with a hadji cell phone.

What he has could/probably is different.

Is the ADT device different than a cell phone?
3/21/2013 5:30:44 PM EDT
[#25]
Quoted:
Quoted:
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.




If my buddy calls me at his house and he turns on his jammer, the call will drop and I will not be able to hear him



For the record, you are breaking the law, and it's a law that has some serious teeth.  Huge fines and possibly even felony jail time if you happened to drop a 911 call.


$10,000.
3/21/2013 5:31:27 PM EDT
[#26]
Quoted:
Quoted:
Quoted:
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.




If my buddy calls me at his house and he turns on his jammer, the call will drop and I will not be able to hear him



For the record, you are breaking the law, and it's a law that has some serious teeth.  Huge fines and possibly even felony jail time if you happened to drop a 911 call.


$10,000.


Every time you push the button.
3/21/2013 5:33:05 PM EDT
[#27]
Quoted:
Quoted:
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.



That is not, at all, how it works.

The phone will be knocked off the network and communication will cease.



That's how it worked with certain systems the Army has.  We got bored in the motor pool one night and tried it with a hadji cell phone.

What he has could/probably is different.

Is the ADT device different than a cell phone?


No.  It is a GSM cell phone.  
3/21/2013 5:33:08 PM EDT
[#28]
Quoted:
Quoted:
Quoted:
Quoted:
Quoted:
Think of it like this. You're talking on a cell phone with your friend. I turn on my jammer and direct it towards your phone. Your friend will hear you since you are transmitting, but you won't here what he says until I cease jam.

They work on the receiver portion of the device and overload it with the signal, thereby preventing anything from getting through. The strongest signal will win. If you and your friend were closer than I was, and his transmission power was greater than mine, then conceivably you could hear him, may be staticky and garbled, but would come through.




If my buddy calls me at his house and he turns on his jammer, the call will drop and I will not be able to hear him



For the record, you are breaking the law, and it's a law that has some serious teeth.  Huge fines and possibly even felony jail time if you happened to drop a 911 call.


$10,000.


Every time you push the button.


You're a Navy EWO huh?

I defer all questions to him if that's the case. I know when I'm out knowledged
3/21/2013 5:33:22 PM EDT
[#29]
OP removed