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I've seen the 461.0375 used in downtown Los Angeles with a DCS of 054. This was about 03/20/2020. Some data suggests the shoot may have been for Sony Pictures but that's a guess. I show licenses for Warner Brothers and a film rentals outfit. (Home brew ULS database screen follows:)

Out of curiosity, ICS 204 Box 6 makes references to Tones for different areas. I presume these are not PL tones, but something else. Is anyone able to clarify what those are referring to? This refers to Firescope CTCSS tones: 110.9 Hz.=Tone 1. This part of the VHF system seems to have had a lot of ...

This is a good illustration of a portion of the cost of using encryption. What this doesn't say is that the department will probably need to add a 0.5-1.0 full time equivalent staff member to manage keys. That's an estimate. That person will have to be both radio system literate and qualified to han...

Thank you for this link. Did they get a new IT Chief in the last year or two? This being a CHP video, they didn't mention the OES view of CRIS. When completed, CRIS will be linked to RCS and other P25 systems statewide. This will allow roaming. For example, if an ambulance task force from Sacramento...

Great info Brian. Phase 2 is very seductive for system managers as you double the number of simultaneous voice transmissions without adding any base stations, combiner legs, or antennas. If your tower loading is maxed out, it's even more attractive. Everybody gets grumpy when they get a busy tone. I...

Hello Marco. As a friendly suggestion, make sure the SDS200 has the latest firmware update. I'm running 1.21.00 — there might be a newer one. Earlier versions had a buffer overrun problem when receiving interference or when the receiver acquires an encrypted signal. It caused the display to hang int...

I just tripped over this odd system ID. You solved the mystery. So I'm about 7 years behind you.