Pro-668: Garbled transmissions

[bb19]

I am trying to find the local taxi company using signal stalker; reason being is there isn't much activity on the standard channels(police/fire/etc.) so I'm looking for some other things to listen to. I've come across a channel with a lot of communication (453.000000) however the transmission is extremely garbled. This is on a conventional signal, not digital. The scanner is saying that it's CTCSS. Is there a way to improve the reception so that i can actually see if it's a channel I'm interested in?

 

[gewecke]

I am trying to find the local taxi company using signal stalker; reason being is there isn't much activity on the standard channels(police/fire/etc.) so I'm looking for some other things to listen to. I've come across a channel with a lot of communication (453.000000) however the transmission is extremely garbled. This is on a conventional signal, not digital. The scanner is saying that it's CTCSS. Is there a way to improve the reception so that i can actually see if it's a channel I'm interested in?

So where are you? A little more info is needed, before we can help you... 73, n9zas

 

[buddrousa]

The taxi may be encrypted voice inversion

 

[SCPD]

If your scanner is digital and can receive p25 signals either it is being conventional you say, bad reception of a p25 conv signal which may sound garbled like the r2d2 and mistaken for secure comms, a phase 2 frequency part of a trs not found yet which will sound encrypted from a phase 1 radio or reciever that doesn't do phase 2 modulation decoding, or old analog masc or inversion scrambling which that is easily solved now days with help of Google aside from the illegal things with decoding it. But possible. Why it's outdated and not used anymore except a small business eho doesn't know it's old ancient securing.

 

[Blackswan73]

His scanner is tagged as a 668, which is digital, and capable of P2. My guess is a weak or poorly received P25 signal. As for speech inversion, I thought that went out with leisure suits. As for circuits. It was published in 1977 in Electronics Illustrated.

 

[buddrousa]

We still have local SO's in other counties using speech inversion just as they have for the last 20 years on the same repeater and radio systems. the Kenwood TK-2180 3180 7180 8180 all have built in encryption that is speech inversion.

 

[gewecke]

His scanner is tagged as a 668, which is digital, and capable of P2. My guess is a weak or poorly received P25 signal. As for speech inversion, I thought that went out with leisure suits. As for circuits. It was published in 1977 in Electronics Illustrated.

. Single inversion is still popular in many parts of the U.S. so don't rule it out although not secure.:wink: 73, n9zas