We don't track encryption type, only the fact that a frequency or talkgroup is encrypted, so just submit that it's encrypted. Also make sure to mention whether the encryption is full-time or part-time.So if I noticed a group that's in the database start using the Analog voice inversion scrambling should I make a submission to have the description updated? And if so how should it be worded?
Nope. As a matter of fact, sometimes it is only on one end of the transmission.When a channel or frequency gets encrypted, I would have thought it was always encrypted..
I lived in an area where the PD used a conventional single frequency repeater system and normal radios included no encryption (if you can call voice scrambling encryption) but the supervisors had it included. When a supervisor needed to talk to another supervisor or the chief they could activate the encryption so they had some privacy. They initially thought that they could do what they wanted using just a different PL, but their radios would switch to CSQ (no PL on receive) when the mic hangup clip was grounded so anyone could defeat that plan.
Uniden auto skips, Whistler plays the "busy" dial tone like you would get on a landline phone, some older scanners just mute. If you were to hear it though it just sounds like garbled audio. Like alien robots.So if I had a frequency entered into my scanner that I listen to when squelch breaks and that frequency decides to "switch" to encryption, what will I hear then? Static?
Also, take for example an EMS agency we have here in IN. Indiana University Health - LifeLine. They run what we call "Partial Encryption". Some of the units run encryption at all times, others only in special circumstances. With Motorola at least, you have the following options for "secure" settings: Strapped Full Time (ADP or AES256), User Selectable, or Clear. With user selectable, you can have multiple variations in use. And Strapping can be set up in multiple ways also. And the settings can be changed on the fly with OTAP (Over The Air Programming), and the Encryption Keys can be changed on the fly with OTAR (Over The Air Re-Keying).
On full time talkgroups/frequencies you also sometimes get accidental spills. There was a great video of a WS1080 on youtube that recorded some in the clear secret service traffic during a presidential visit in 2011 or so. I also remember reading someone talk about monitoring the simplex frequency for their local post office because sometimes the P25 would also spill out into the clear. The advantages of having a record capable scanner.All depends on who programmed it.
One Dept might make the ENC user selectable, where-as another [some - not all FEDS] may go an strap the radio for always ENC
and then there are the Part-time which includes there where DISP is ENC but users not and vice-vers