I have a 5.8 gHz digital cordless (vtech) phone and want to know if having a scrambler system prevents eavesdropping, and to what degree...I was told by several ppl that this works, but my reading of the internet suggests this is not necessarily true. thought? thanks.
digital phone scanning
- Thread starter slimy
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nexus
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not needed, there aren't going to be any scanners that will 1. receive that frequency range, and 2. its already digtal so it still wouldn't be heard.
you'd only want a scrambler for someone tapping your pots line, and even then the other end of who you were talking to would need a device to unscramble it.
you'd only want a scrambler for someone tapping your pots line, and even then the other end of who you were talking to would need a device to unscramble it.
Eavesdropping used to be a problem with the old 900mhz and lower phones, they could be easily picked up with a scanner just by searching, but its not a problem with newer phones like yours.
Not the question I expected when I read the topic....I figured it would be "how do I listen to these phones with a scanner?"
Not the question I expected when I read the topic....I figured it would be "how do I listen to these phones with a scanner?"
XTS3000
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Just like the uniden scanners have test mode (press certain buttons while powering up), their cordless phones can be put into test mode. I lost the article that had the exact key press, but I'm sure it was pressing 2 or 3 buttons while putting the headset battery back in. I could take my 900Mhz digital phone, put it in test mode, and change channels, mute the mic, mute the speaker, enable transmit/disable transmit. The base unit can also be put in test mode (usually by pressing the PAGE button and plugging in the wall wort).
5.6Ghz scanners cost you your left nut, and still won't decode digital phones. However uniden digital phones cost.....about 90 bucks?
Look at Best buy and you'll notice that most 5.6ghz phones say digital, but nothing about encryption.. Hrmmm how interesting.
In the 900Mhz haydays, I was able to pick up 3 digital calls with my Uniden in test mode, but it really got to be a pain in the ass changing channels manually. I made sure when doing this, I disabled the transmitter, so as not to interfer with the person I was listening to.
Squelch circuits are not hard to build, and some simple circuit to simulate pressing the ch.up/ch. down button would not be hard to make. Sounds like a fun project.
I have never found test mode for V-tech phones.
5.6Ghz scanners cost you your left nut, and still won't decode digital phones. However uniden digital phones cost.....about 90 bucks?
Look at Best buy and you'll notice that most 5.6ghz phones say digital, but nothing about encryption.. Hrmmm how interesting.
In the 900Mhz haydays, I was able to pick up 3 digital calls with my Uniden in test mode, but it really got to be a pain in the ass changing channels manually. I made sure when doing this, I disabled the transmitter, so as not to interfer with the person I was listening to.
Squelch circuits are not hard to build, and some simple circuit to simulate pressing the ch.up/ch. down button would not be hard to make. Sounds like a fun project.
I have never found test mode for V-tech phones.
FWIW, some of the 5.8GHz phones are only 5.8 one way (base to phone IRC) and 900MHz from the phone to base. I have one made by Uniden (Model EXI5160 under the battery). Some of the 5.8GHz stuff isn't exactly what you think you are getting. I found this out one night when I was talking to my GF and was also playing with my BR330T. I put it in close call and a couple of seconds later it beeped when it found the frequency.
Roger
Roger
trainman111
Member
I actually just bought a 5.8GHz a couple nights ago and it said "5.8GHz/2.4GHz digital frequency hopping technology". I didn't think I would need the frequency hopping part but I guess AT&T wants me to be extra sercure 
. It's amazing how technology has advanced comapared to my old 900MHz wireless phone.
. It's amazing how technology has advanced comapared to my old 900MHz wireless phone.
nexus
Member
the frequency hopping technology isn't used to bust someone from monitoring with a scanner, its a feature that allows the phone to give you the clearest possible frequency for the best phone call. As the phone picks up interference from other nearby phones, or other wireless devices on the same band it will automatically change frequencies to find the clearest one for use.
Is there any way to put a bc250d into test mode to pick up more cordless phone frequencies???
PM me if you have any info.
PM me if you have any info.
Stand on your head while pressing 3 and turning the power on.
Minus standing on my head, I did everything else (Hold 3 while turning the power on) and it didn't work, Any other ideas???
richster
Member
z96cobra said:
Hi Roger,
Your phone is exactly that! The handset transmits 900Mhz to the base on that model.
Regards,
Richster.
2+9+MAN or 2+9+L/O while power the unit on was used to put the scanner into test mode I believe. Remember it will hose your freqs so you will need to backup before doing it. www.mods.dk has some info (you have to register) but just use a spam.la address to avoid the junk mail.
Ok, I'm not gonna do it, Because I don't want to loose my frequencies.
richster
Member
trainman111 said:I actually just bought a 5.8GHz a couple nights ago and it said "5.8GHz/2.4GHz digital frequency hopping technology". I didn't think I would need the frequency hopping part but I guess AT&T wants me to be extra sercure
Hmm how much did you pay for that phone?
AT&T are one of the worst manufacturers "bending" words to make their products sound more appealing.
I have come accross many cordlesses claiming to be digital, when in fact they were not. A 900Mhz "so called" digital phone I bought turned out to be analog. They were able to put the word "digital" on the box because the numbers you pressed were not in DTMF, but in digital. The voice was transmitted in analog for all to hear.
The same goes for frequency hopping. The very first "frequency hopping" phone I ran into, did no such thing. Further investigation I found that the maker was able to use "frequency hopping" as a selling point, because it had the ability to change frequency automatically when the phone detected interference or another signal.
If you paid less that $70 bucks for that cordless, it is likely your phone is not what it really claims to be.
trainman111 said:
That's a dead give away your phone is a dual bander. Manufacturer's do this to cut manufacturing costs. Your handset transmits in the 2.4 Ghz. Although this band is fairly secure, there are receivers out there that can pick this band up.
Regards,
Richster.
thanks ppl. i have a twisted neighbour who has been disclosing sexual and banking details of one of the single moms that lives nearby. She has a 2.4 gh non digital and I was hoping to get her a 5.8 digital (like mine) if this could eliminate the problem. alternatively, I was was considering buying a device to block his reception at selectively at 2.4 Ghz. I suppose this is not the right forum for this, but if anyone has any ideas, let me know.
57Bill
Member
slimy- look through www.ladyada.net for the "blocking" idea.
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