Voice Inversion Descramble time/mci .. IT works

[DaveH]

Originally Posted by Ray_Air

I have never met anyone who can understand inverted speech. I have listened to many hours of scrambled speech including rolling code. If you try to crack rolling code, most of the time all you get is a string of words if your lucky and know what you're doing.

I haven't met such a person either but that doesn't meet it "ain't so". You can listen
forever and not understand it; I think it involves special technique. I would hazard a
guess that it involves listening to the same content non-inverted and inverted, a
kind of "training the brain". This probably wouldn't work for rolling code, variable
split-band or other types of inversion. Some people may not be easily trainable,
others may be more so, like hypnotism (may not be the best analogy).

If I find my old list of reference material, you could about read it yourself,
assuming that the book is still around; or Google might help.

Dave

[jred184]

I've posted this another thread, but you guys might be interested in this

[jred184]

Originally Posted by LordJ

Ok, so if the software program works, what about the Ramsey kit? Anyone have one, tried one?

http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key=SS70C

Not sure what the other guy's issues were, but I got mine in today, and it works like a charm. Not bad for the price.

[mciupa]

Thank's for the schematic .

Did you know I can still see it standing across the street ?!
(Thank God for page scrolling !)

[mancow]

I think they discontinued the NE602 quite a while back.

I built that circuit back in 1993 and it worked but was noisy as hell. I wouldn't waste the time.

As for the Ramsey SS70 (I think it's called), it was based on the MX-COM full duplex chip for cordless phones. You could vary the split point by warping the oscillator frequency. It could be used to encode and decode simultaneously.

We have the Transcrypt 460 rolling code here. I works but isn't all that reliable due to syncronization issues. The static comes from the pseudo random timing ticks that are transmitted along with the voice. The audio suffers but it's a whole lot more secure than the cheezy single mode type.

[pathalogical]

gnitseretni cipot !

[Ray_Air]

I have extensively tested the Ramsey SS-70 against numerous analog scrambling techniques and here are the results:
Ramsey unit vs.:
Fixed Voice Inversion: Busted (obvious)
Splitband: Busted
Transcrypt 410 (hops once p/sec.): Busted
Midian TVS-2 (std. mode 6-12 hops p/sec): Busted
Midian TVS-2 (adv. mode 13-25 hops p/sec): Was able to get strings of words
Transcrypt 430 (hops 250 times p/sec): Basically useless against this scrambling
MX-COM VSB rolling split band: Utterly impossible to get a word
Transcrypt 460 (650+ hops p/sec): Forget about it, too secure
Marconi MASC: Not a word , too secure
Transcrypt DES: Not a word, too secure

Conclusion: For the price the SS-70 is worth it!

[Indico23]

[QUOTE=Jammin_Jay]I can hear on marine vhf channel 6, sometimes encriptred voice transmission comming from cry-2001 scrambler , any help ?

[fireandems13669]

I see my fav topic voice scramblers mmmm.

I saw someone posted these

155.115 St Lawrence County Sherriff, Canton, NY (when inversion is used)
155.550 Ogdensburg, NY PD (when inversion is used)
I am not sure where they came up with a 7000hz range they are down in the 3000 hz range wont give specific.
I also pick up brockville and my Midians and trascript boards both recieve them fine and also I the icom Ut-109 boards work fine..If anyone want any help with scramblers just send me a message

[nova1010]

Originally Posted by pathalogical

gnitseretni cipot !

si ti seY

[scannergoduk]

i tried accessing that site www.tetrascanner.com and it asks for username and password? whats the username and password please as i want to get hold of the software

[IdleMonitor]

What I'd like to know, I take it it's possible to use this "inversion" bit with a PL tone, because the odd time that I can be within distance of hearing these other spots I still have the PL tone in on the radio and they still come through, just with the "inversion" on there too.

Originally Posted by mciupa

Well ,in the spirit of info sharing

Town of Perth 142.125 mHz pl 131.8 Hz

Tell us if it works.

[CAPTLPOL1]

Originally Posted by scannergoduk

i tried accessing that site www.tetrascanner.com and it asks for username and password? whats the username and password please as i want to get hold of the software

You know that the original post was started in 2005.

[Jammin_Jay]

Anyone Looking for the voice descrambler program, and wants to play around with it.

Here is a current Link, to the actual developer of the software on his webpage.

http://xoomer.alice.it/aporcino/

A disclaimer does appear to cover any liability purposes for miss use or illegal activities.

As for anyone interested in explaining how to use it, please pvt msg me, or search and review similar posts regarding voice inversion that i have discussed on this forum.

There are no instructions on how to hook it up. A full duplex sound card is needed to re-invert in as it happens in progress mode.
Also the numerical value you see in the program is not the frequency, but the inverted frequency times 2. freq = invrt freq x 2.
Interval numerical steps are -/+ 50, which would be approx 25 hz.

Also to explain... for new users. This has nothing to do with the RF frequency, only the Audio frequency you hear through the speaker.

Thanks

[warrior420]

here is another program for that


http://www.scanaustralia.bigpondhost...software1.html