Miami People---> Freq. Question

[thaclient]

Hi everyone. I've been wondering about something. While scanning (on my Pro-94B) I came across this: 152.435mhz. I was wondering if anyone knew what it was. I tried looking in the database but didn't see it. It sounds like voice distortion. I was wondering if that is what encryption sounded like? I'm a newbie, but I couldn't imagine that it would be that audible if it was encrypted? Any insight would be greatly appreciated . I've just been scanning around and looking for anything interesting. I recently aquired this scanner after not listening for about 7 years. I figured that I'd get in on the sale while saving up for a Pro-96. I've been listening mostly to the MDPD trunking system. Anything else interesting (non-digital) that you all have come across? Thanks again for helping a newbie out...

 

[n4voxgill]

That frequency is in the business pool and I don't know who it licensed to in Miami. According to the fcc rule if it is part of a repeater system the other side should be on 157.695. Listen there and see if you hear anything. Gill

 

[thaclient]

Gill,

Thanks for the info. I get nothing on the other frequency, even while I get voices on the first. I'm assuming maybe it's not a repeater, then? I can hear multiple (distinctive) voices communicating. I can also hear what sounds like a "call" function on a radio (ringing). What's odd is that the voices are almost understandable. The distortion used is seems something very rudimentary, so maybe a business would seem likely? For example, I'm curious what a more advanced form of encryption (like AEGIS) would sound like. I'm not very experienced, but I don't think I'd be able to make out anything at all.. That's just why I was wondering what this was. Thanks for the help, however...

EDIT*** I searched the frequency on the FCC website and came up with a taxi company. I suppose this might be it, although I've heard other taxi companies not using the scrambling thing. I guess this is a lot less nefarious than I hoped :lol:. Now I've got to find some other interesting stuff to listen to...

 

[W4KRR]

I believe that 152.435 is a taxi frequency. Some of these systems are set up in such a way that a person calling for a cab on a phone will actually come thru the cab radio so the drivers can hear the call directly and respond. If it sounds distorted, they may be using voice inversion, a low tech scrambling system.

 

[thaclient]

W4KRR:

Yup, that's exactly what they are using. I heard it in a .wav file (inversion) and that is what is going on. . That's interesting that sometimes cabbies can get the calls directly, I didn't know that. I'm curious if that's what is going on in this situation because it does sound like it rings and then I hear the voices.