Search found 34 matches

by N6AJB
Sat Apr 13, 2013 6:15 pm
Forum: Riverside County Sheriff
Topic: Detectives
Replies: 10
Views: 11939

Re: Detectives

There is a lot that they do in the field, it's just that they usually notify dispatch on the cellphone instead of the radio and most of the stuff they do (interviews, searches, etc.) has been pre-planned and does't require much use of the radio. If they spend a lot of time on the radio it's probably...
by N6AJB
Thu Feb 28, 2013 11:54 am
Forum: Scanning Discussions
Topic: Encryption
Replies: 7
Views: 3210

Re: Encryption

By the way, did anyone ever notice how whenever there is an encrypted transmission on COPS, you can hear a buzz and see "Encrypted transmission" in the caption?

~The screen just blinks fast, twice.
by N6AJB
Tue Feb 26, 2013 9:02 pm
Forum: Scanning Discussions
Topic: Encryption
Replies: 7
Views: 3210

Re: Encryption

It sounds the same as any other transmission in P25. Most of the older crypto schemes like DES-XL and DVP that use 25khz bandwidth are no longer legal under the new narrowbanding rules, so most all of the newer encrypted systems use DES-OFB, or AES algorithms. The "donald duck" sounding vo...
by N6AJB
Mon Aug 20, 2012 8:46 am
Forum: Frequencies and Talkgroups
Topic: Radio Techs on Edacs in coachella valley
Replies: 1
Views: 1482

Re: Radio Techs on Edacs in coachella valley

The Motorola APX series radio.