• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:

Anniston Army Depot

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Lead Wiki Manager
Super Moderator
Jul 18, 2004
Brownsburg, Indiana
The following was posted as a Wiki article by Codeplug, but I think it's more appropriate in the forums.


I have been monitoring this system with a non-digital scanner and I have not heard any analog voice traffic. Only digital traffic was heard. On some frequencies,there appears to be what sounds like a dead key up intermittently with no voice or sounds. It appears that their are 3 active control channels at any given time with one control channel switching to an alternate frequency every so often. I am unsure as which control channels are primary or alternate Some talk groups may be encrypted or partially encrypted. All other frequencies appear to be used for digital voice traffic and some digital data traffic. Some control channel frequencies may also be used as alternate digital traffic frequencies when needed.

406.1625c was a control channel then it switched to 407.3625c,they may switch back and forth.
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