Magic Mountain doesn't appear to use DMR. So darn near any scanner will do.
Attractions / Amusement Parks (Los Angeles County) Scanner Frequencies and Radio Frequency Reference Unless of course that's old information.
482.8625 WII801 RM CSQ SCV-D5 Disp 5 - Santa Clarita [L-TAC 8] FMN Law Dispatch
483.325 RM 151.4 PL LAC D-1 Dispatch - Santa Clarita / Antelope Valley (BN 6,11,17,22) FMN Fire Dispatch
483.525 RM 151.4 PL LAC C-10 Command - Santa Clarita and Antelope Valley FMN Fire-Tac
483.8625 RM 151.4 PL LAC C-11 Command - Santa Clarita and Antelope Valley FMN Fire-Tac
484.0125 RM 151.4 PL LAC C-12 Command - Santa Clarita and Antelope Valley FMN Fire-Tac
470.5875 KNP331 RM CSQ LAC BLUE 11 Alt CMD - Santa Clarita and Antelope Valleys FM Fire-Tac
471.025 WIL591 RM 118.8 PL SCV EM Emergency Managment FM Emergency Ops
The Santa Clarita county sheriff appears to be in the clear. Press control + F in your browser and find Santa Clarita.
Los Angeles Regional Interoperable Communications System (LA-RICS) Trunking System, Los Angeles County, California
Like mentioned, if you see a DE it means full time encryption. A De is partial encryption. Meaning they can be encrypted or not encrypted at anytime. If you program a De talkgroup and if an encrypted transmission comes along the scanner will mute the audio hash and continue scanning.
I own both P2s. They work great for me but I don't listen to any simulcast towers.
This tower would be what I would start with for the Los Angeles Regional Interoperable Communications System (LA-RICS).
Los Angeles Regional Interoperable Communications System (LA-RICS) Site: Magic Mountain 700
Another.
Los Angeles Regional Interoperable Communications System (LA-RICS) Site: North Simulcast 700
I don't know if these towers are simulcast or not, but may be better.
Los Angeles Regional Interoperable Communications System (LA-RICS) Site: I-5 North UHF Details
www.radioreference.com
Los Angeles Regional Interoperable Communications System (LA-RICS) Site: I-5 West UHF Details
www.radioreference.com
Another contender.
Los Angeles Regional Interoperable Communications System (LA-RICS) Site: Magic Mountain UHF
The LA-RICS does look simulcast though so the P2 may have issues.
Los Angeles Regional Interoperable Communications System (LA-RICS) Trunking System Profile
www.radioreference.com
Do you have any experience with programing a P25 trunked system? It is a bit of a learning curve. Especially with DMA type scanners. I'd chime in on the California subforum and ask about the P2 you're interested in. It
may not work that well due to simulcast. If you buy ProScan, I can create a file for you. Or someone else in your area can do it from the California subforum.
wiki.radioreference.com