Encrypted Audio far from 'silent' on PSR800

[tilt404]

In the EZ Scan software for my PSR 800 under Encrypted Digital Audio Settings, I have it set to silent but still garbled audio comes out of the speaker much of the time when it stops on a encrypted TGID. Not all the time, but I'm guessing 30-40% of the time. I don't know why it will sometimes, and other times not.

[Gilligan]

It's probably having trouble reading the signal and therefore knowing that it's an encrypted signal.

[jackj]

There are two locations under the Advanced Features tab that deal with encrypted audio. One is "Encrypted Digital Audio Settings" where you have two values you can change. The other is "Trunking Options". I don't know which has priority but you can experiment with the settings and find out.

One thing I do know is that the "Help" info is wrong about the trunking options settings. Help says that if you set the "enc" options to ignore, the scanner won't stop on encrypted talk groups. That's wrong but it would be nice if you could set that to skip.

[tilt404]

I've noticed that too where it still stops on them with ignore. I do have it set to allow on MOT Enc Talkgroups though. But I have 'silence' on the digital audio settings for encrypted audio. Most of the time is is silent, but other times not. Seems like it keeps going from digital noise to silent. I would usually lock the encrypted ones out anyway but I'm trying to log RIDs so I have to keep searching.

[mike_s104]

If you have a wildcard set for a trunked system and it find one that is encrypted, it won't recognize it as encrypted.

[tilt404]

These are already set though in memory, not wildcards. But there is a wildcard in that system. But when it does this its not a unknown wildcard, its happening on ones that are already programmed in.

[mike_s104]

Originally Posted by tilt404

These are already set though in memory, not wildcards. But there is a wildcard in that system. But when it does this its not a unknown wildcard, its happening on ones that are already programmed in.

Are these on a trunked site or conventional P25? It also doesn't know analog encryption like ICE/Customs "10-10" mode of the FBI's analog encryption.

[tilt404]

It's on a P25 system that is mixed with encrypted and not encrypted.

[dizwiz]

Heres another angle on it:

Is it the same system or different systems you are talking about (about getting the R2D2 30 to 40% of the time).

I monitor a couple different types of motorola systems.

For the ones that have an analog 3600 bps control channel / digital voice (like OH MARCS), you will never hear encrypted audio irregardless of your settings. Its because the scanner (my PSR500 and Im told the new PSR800) automatically recognizes the status bit as encrypted and auto-skips.

For 9600 bps CC / digital voice settings, then the scanner settings should work.


Heres my take on it (you didnt ask, but here it is anyways

The non-user controllable encryption auto-skip feature on GRE scanners (for 3600 bps CC / digital voice systems) is a nuisance. I personally prefer to hear the encrypted audio, and lock it out manually. This way I can see the TG ID, radio ID, and make a mental note of which radio ID is using encryption and if he comes back off encryption.

[Kel]

So tell me the setting for P 25 conventional 9600,it works great on 3600.

[tilt404]

Originally Posted by dizwiz

Heres another angle on it:

Is it the same system or different systems you are talking about (about getting the R2D2 30 to 40% of the time).

I monitor a couple different types of motorola systems.

For the ones that have an analog 3600 bps control channel / digital voice (like OH MARCS), you will never hear encrypted audio irregardless of your settings. Its because the scanner (my PSR500 and Im told the new PSR800) automatically recognizes the status bit as encrypted and auto-skips.

For 9600 bps CC / digital voice settings, then the scanner settings should work.


Heres my take on it (you didnt ask, but here it is anyways

The non-user controllable encryption auto-skip feature on GRE scanners (for 3600 bps CC / digital voice systems) is a nuisance. I personally prefer to hear the encrypted audio, and lock it out manually. This way I can see the TG ID, radio ID, and make a mental note of which radio ID is using encryption and if he comes back off encryption.

The only digital system I monitor for the most part is a CQPSK - Phase II P25 one. The silent setting kind of works on some of the TGID's in the system but other times a blast of audio will come out. Its better than the other setting though when the audio comes out, or quieter I should say. I track RID's though so I still like to monitor the encrypted channels yet not hear the audio all the time since it gets on my nerves. Like you I prefer manual control too.