mpscs topology question
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IP is a network layer, (layer 3) protocol and can be transmitted over many different types of physical mediums like copper, optical, rf, etc...
I don't Understand what you mean by 'Racks Of Mobiles'
please elaborate
I don't Understand what you mean by 'Racks Of Mobiles'
please elaborate
Some also use 6 and 11 GHz digital microwave relays to connect to the system. This is the most efficient and reliable means to for any dispatch center to operate on the MPSCS or any other wide-area communications system. While the cost maybe high, it will pay for itself in the long-term many times over.
73s
Ron
73s
Ron
They use mobile radios (motorola W-something) installed in a rack. They are then wired to the CEB (central electronics bank, the interface between radios and consoles). If installed properly, each radio has only one talkgroup, therefore preventing any accidental changes.
So your saying they have racks of mobile radios at the police station, What kind of antenna are these radios connected to? How do these mobile radios connect to the remote towers? is each remote tower connected point to point to all other tower, are the daisy chained? Wouldn't the rack of mobile radios be at the Tower sites?
I don't remember seeing microwave dishes at the Frasier or st heights stations, i might of missed them though. I'm assuming all the police stations on a simulcast system are connected the same way right?
sorry for the questions but this system is pretty confusing
I don't remember seeing microwave dishes at the Frasier or st heights stations, i might of missed them though. I'm assuming all the police stations on a simulcast system are connected the same way right?
sorry for the questions but this system is pretty confusing
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I see what your asking, I'm just used to there almost always being a tower at dispatch.
The racked mobiles use the trunk just as as the portabiles and mobiles do. The 'dispatch tower' uses the regular MPSCS tower sites. The antennas are white, flat, and about the size of a phone book. They may also be mounted on the building, and not on a tower. They are suposed to be aimed between the 2 closest towers.
Most MPSCS towers use microwave between sites.
The racked mobiles use the trunk just as as the portabiles and mobiles do. The 'dispatch tower' uses the regular MPSCS tower sites. The antennas are white, flat, and about the size of a phone book. They may also be mounted on the building, and not on a tower. They are suposed to be aimed between the 2 closest towers.
Most MPSCS towers use microwave between sites.
w8jjr
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They are not mobiles. They are racked transcievers. Not for every talk group, the distrubition between the consoles and racks are controlled by in simple terms a computer.
6 and 11 GHz digital microwave Search the FCC database. But all you will hear is buzzing noise.
http://www.michigan.gov/mpscs
6 and 11 GHz digital microwave Search the FCC database. But all you will hear is buzzing noise.
http://www.michigan.gov/mpscs
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hey guys thanks for the replies,
I still have a few questions, Im trying to understand the way this complex system works.
Is the audio from dispatch to repeater site p25 or some other type of digital? (im assuming its digital?) What type of equipment is used? web link?
In the simulcast system, do -ALL- of the local base stations uplink to the simulcast system via microwave link? ( ie all fire, police, and ems dispatchers?? ) or do just the bigger ones?
And, at other non-simulcast sites in Michigan are towers usually independent sites, ie the site repeater is not locate at the police station?
thanks guys
I still have a few questions, Im trying to understand the way this complex system works.
Is the audio from dispatch to repeater site p25 or some other type of digital? (im assuming its digital?) What type of equipment is used? web link?
In the simulcast system, do -ALL- of the local base stations uplink to the simulcast system via microwave link? ( ie all fire, police, and ems dispatchers?? ) or do just the bigger ones?
And, at other non-simulcast sites in Michigan are towers usually independent sites, ie the site repeater is not locate at the police station?
thanks guys
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