- Dec 15, 2004
Does anyone know how each unit ambo, eng, truck, etc are assigned their MDC code for their rig and Portable radios. For example what would E113 be?
scanman1958 said:I don't want to sound like a real dud here but I would like clarification if you may. When the shift to digital goes online will we all have to eventually get digital (APCO 25 type??) scanners to monitor the CFD? I do no have one yet and don't need one yet but it sounds like I better start saving my pocket change.
Heard this in the last couple of days so i'll pass along. Original target date was April 2007, but may not actually happen till November 2007. As far as frequencies , EMS or Fire or both, is unknown at this time. My best guess , and this is just my opinion, is both will switch by November. I'd look towards the EMS to switch first and within 6 months, you'll see the fire companies switch. As I previously mentioned, this is the way it was supposed to happen. My reason for this guess is , less ambulances to change over radios. I'd look for this to happen over about a week as far as EMS goes. You may hear us go for a "radio upgrade" or something to that nature. On all of our portables, we have SIM-NO and SIM-SO already programmed in the radios. May get a memo stating " all portable radios shall display SIM-NO or SIM-SO until programming has occured" or something like this. Considering these frequencies have been used with very few problems for events and things, I see this being problem free. Just so everyone understands, I am passing along what I heard. I have received some interesting PM's regarding CFD so I just want to put that out there.werinshades said:Pretty much yes. Eventually, the entire city will be UHF Digital and be able to switch to each others frequencies. Time frame keeps getting changed and as of this time, I have no new news to report.
Hi Chicago-werinshades said:SIM-NO (477.5125) is being utilized now for the "Festival of Lights " on Michigan Ave. so all can check their reception of the new and upcoming system.
MrSpeakEZJr said:Hi Chicago-
Travis from Denver Fire Dept, Colorado by way of an old MABAS 10 dept. Just want to chime in about the digital system and get caught up on the changes since I've left Chicago in 01. I REALLY hope that extensive market testing has been done on these new digital radios and a detailed "real world" reception test will be done before these come on line. Colorado has gone to a state wide digital 800 system in the last few years and it sucks. As everyone can guess, 800 and especially digital, doesn't do so well in the topogrophy of Colorado. DUH! But aparently there are some really good salesmen in Motorola. We at the DFD are somewhat fortunate that our trunked system, though 800, is an old EDACS analog. It too sucks, but at least when you're in a "hazy" spot, you can still get your message through among the static. The real problems we had with the statewide digital system is the complete drop of your transmission when you get in the "rough." Not only is it a pain, but it could be life threatening. Although from what I can gather, the new system is just going to be APCO-25 digital and not trunked??? You can still run into the same problems 'cause digital is digital, man. I agree with the tradition of staying with VHF and just increasing the potential of what you have. But who am I to say?? At the DFD, we kept our old 154.070 simulcast, but the ridiculous thing is no one in the suburbs can access it. But anyway, the long and short of what I was trying to say is; 1) I really hope that 400mHz does better than 800mHz for you guys. 2) I hope that you don't run into the dead spots we have in our city and the complete drop of your transmission. And 3) Don't completely scrap the old for the new because when the "latest and greatest" doesn't work so well, you still have something to fall back on. You've really got to wonder where these ideas come from sometimes??? I'll bet it didn't come from the line.
I would suspect yes to all questions. All directions are pointing to all Digital UHF-T . Licenses are showing all new frequencies in the 476-481 Mhz. range. Their are some newly licensed in the 460 Mhz. area too. These have been utilized so far as low-power Digital by a few agencies thus far.denseglow said:With Chicago going to UHF digital, does this just mean they'll use a frequencies and an NAC code on a repeater? Much like conventional radio now, except digital. Is all police, fire and EMS going digital or... Thanks!
As someone whose local PD recently upgraded from UHF analog to UHF P-25, I can attest to that statement (with the possible exception that the audio quality leaves a little bit to be desired; just takes some getting used to). Only difference is that some of the annoying dispatchers who get under my skin just sound worse...scanman1958 said:Take a long good listen and enjoy. I know the traffic will still be the same (the voices the slang the character) so it will "sound" the same but sometimes you just hate change. Remember too, it is all for the better.