not sure when it transpired but dia has switched to p25
So with switching to P25 can they be heard up north now or they still on low power? What about Denver PD, are they making the switch later and will they still be on lower power?
So with switching to P25 can they be heard up north now or they still on low power?
The rest of Denver is still normal operations on EDACS, and will continue to be for the immediate future. Denver has not purchased a replacement system for public safety yet, so they will probably be on EDACS for at least another year.
That works well when sites are widely dispersed. DIA sites from Phil's location are about two degrees apart in azimuth.It appears that many scanners have issues receving LSM systems using standard antenna's. The current "workaround" is to point a yagi to the closest site.
You mean like this:They are on borrowed time as support is on a very short string at this point. I don't recall the end of support date for the EDACS systems, but it isn't that far down the road. Denver better hope they have a pile of spare parts available.
Major problem for replacing any trunking system is that it takes about 2 years from the date of signing a contract until the system is up and operating. Plus don't forget that it takes time to write the specs for the system. This generally requires someone with the knowledge and technical background to be able to put it all down in black and white on a document.
Generally a consultant is brought in to work with an agency looking to replace their radio system. It takes a bit of time to go look at each tower location and try to figure out how to keep the old system running while your installing the new trunking system.
Then you have the coverage issue to make sure your new system provides the same or better coverage than what the old system provided. Don't forget that to prove the coverage, you need to drive test the old system to document the signal strength. Then when the new system is on the air, you need to drive test the new system to document the signal strength is what the contract required. This may require special antennas at some tower sites.
Normally the coax cables will be replaced on towers for the new system. You may even need to have 2 sets of antennas and coax cables on the towers for a short time. Can the towers stand the extra loading? Only a tower engineering study of the tower loading can answer this question. This study will steer how the work will be done. There may even be a requirement that the old tower has to be replaced.
All of this has to be done up front before much work can actually be done on the new radio system. It takes time and has to be done in a logical order. You need a whole bunch of information even before you start talking to the radio vendors. This is why most agencies bring in a qualified consultant that has been through this many times. It generally is not something that a Public Safety Agency can do on their own. There is too much money involved and you can't make any mistakes.
Now you may have just a small understanding on why it takes so long to implement a new trunking system. I have not even started to describe all the different steps it takes. Time is not on the good side of any agency trying to have a new trunking system installed for them. They also don't normally have enough internal talent to be able to handle a project of this size and complexity on their own.
They are on borrowed time as support is on a very short string at this point. I don't recall the end of support date for the EDACS systems, but it isn't that far down the road. Denver better hope they have a pile of spare parts available.
Major problem for replacing any trunking system is that it takes about 2 years from the date of signing a contract until the system is up and operating. Plus don't forget that it takes time to write the specs for the system. This generally requires someone with the knowledge and technical background to be able to put it all down in black and white on a document.
Generally a consultant is brought in to work with an agency looking to replace their radio system. It takes a bit of time to go look at each tower location and try to figure out how to keep the old system running while your installing the new trunking system.
Then you have the coverage issue to make sure your new system provides the same or better coverage than what the old system provided. Don't forget that to prove the coverage, you need to drive test the old system to document the signal strength. Then when the new system is on the air, you need to drive test the new system to document the signal strength is what the contract required. This may require special antennas at some tower sites.
Normally the coax cables will be replaced on towers for the new system. You may even need to have 2 sets of antennas and coax cables on the towers for a short time. Can the towers stand the extra loading? Only a tower engineering study of the tower loading can answer this question. This study will steer how the work will be done. There may even be a requirement that the old tower has to be replaced.
All of this has to be done up front before much work can actually be done on the new radio system. It takes time and has to be done in a logical order. You need a whole bunch of information even before you start talking to the radio vendors. This is why most agencies bring in a qualified consultant that has been through this many times. It generally is not something that a Public Safety Agency can do on their own. There is too much money involved and you can't make any mistakes.
Now you may have just a small understanding on why it takes so long to implement a new trunking system. I have not even started to describe all the different steps it takes. Time is not on the good side of any agency trying to have a new trunking system installed for them. They also don't normally have enough internal talent to be able to handle a project of this size and complexity on their own.
On a Harris P25 system, and channel can be designated a control channel IIRC. When I can get back in front of a laptop I’ll compare the two and make adjustments.
I don’t believe uniform products care, but GRE ones do
I thought Denver PD/FD was slowly moving to the MARC system? They have TGs on there.