Bill, Please explain your comment that ".. pre MDC can get officers killed." I am unaware of any evidence whatsoever to support that allegation. The Santa Barbara County Sheriff, along with many other California law enforcement agencies and most U. S. Government agencies, use PTT pre-coding for identification of individual stations. If anything, such pre-coding trains radio users to pause before speaking so that nothing is cut off. Just so we are talking about the same thing, I define "pre-coding" as an MDC1200 data burst that occurs immediately upon PTT button press, before the mike becomes active.
73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Powell Sent: Tuesday, August 26, 2008 5:51 PM To: [email protected] Subject: [Repeater-Builder] Trunking Features w/o Trunking? I'm putting together a new, ground-up UHF analog simulcast system for county-wide public safety. Will have 10 channels at 9 sites tied back to the dispatch center. The conventional systems we currently have on VHF work well (voted input & simulcast transmit w/ console priority) however we have the usual wacker issues. MDC is required but post MDC is little help in locking out undesired users and pre MDC can get officers killed. I'd like trunking features: MIN/ESN to database for system access, stun and kill, GEO position and short message to radio display. However, I do NOT want or need trunking itself as it is contrary to our SOP and inherrently EVIL: our politicians will keep adding non public safety users to the point where the system and dispatchers are overloaded! Ideas other than pre MDC or trunked operation? Even a trunking system that is configured to not trunk and preserve channel by channel operation? TIA, Bill Powell
