Chicago - novinky, mazeec:)
Napsal: 23 Mar 2012 17:41
Ubiquiti se zdá odskočilo na vyšší level, teď to ještě dodat 
. 24GHz 1.4Gbs jedním směrem až 13km v poušti 
a čas dodání klasicky nejistý cena $3k za spoj a nenažranec s 50W a 48V.
airFiber Q&A
Q: When
A: Ben will be answering this question later.
Q: Channel bandwidth
A: 100MHz wide, but will support two of those in FDD mode.
Q: ESD protection?
A: Built-in surge supression on all ports. Silicon Transient Protectors will support the main GB ethernet port and the management port.
Q: What are the power requirements?
A: PoE 48 volts
Q: How many can be co-located in the US on the same tower?
A: Because of the GPS sync you should be able to co-locate very well. No specifics on the numbers yet.
Q: How much spectrum is available?
A: 200MHz
Q: What is the lowest modulation rate?
A: 250meg/second is the slowest it will go.
Q: How much DC power does it use?
A: Less than 50 watts
Q: Will there be an SDK available for the radio?
A: Unknown at this time.
Q: Keeping spectrum clean was discussed. How are they working with other leaders in the industry to keep the spectrum clean with HDD?
A: This will never be like the 2.4GHz spectrum where someone will be running an omni. These are pencil beams that need to be carefully aimed at each other.
Q: Is it 700mbps in each direction, or 1.4Gbps in both directions?
A: 1.4 is aggregate. It is 700Mbps each way.
Q: What is the beamwidth of the antenna?
A: 2.5 degrees
Q: How does the radio handle rain fade on the longer distances?
A: Mechanisms are in place to control the gain of the overall system, but at very long distances rain fade is going to be an issue.
Q: Is there support for fiber to the radio.
A: At the moment there is no option, but if there is enough interest this is something they may pursure.
Q: Are there different speeds/frequencies/price points to be offered in the future?
A: No.. you can't have one that's cheaper and slower
Q: Has any consieration been put into a 5GHz failover so that when rainfade happens the link doesn't go down.
A: This has come up in conversation at Ubiquiti, but not in this product has it been implimented.
A: The unit, however, will reduce the modulation rate when it rains heavier.
Q: Is this a loss-less sytem?
A: Yes, the system will rate adapt without losing any data.
Q: From a software level, is there IPv6, will this work with AirControl?
A: Yes. The system is airOS based. Exact same feature set.
Q: What is the max high-rain fade link fade type setup?
A: In a high rain-fade area you might lose 4-5dB per KM. When the rain-fade happens, the fade happens only where the heaviest part of the storm is. As the link distance increases the chance of having more rain fade comes up.
Q: What is the constelation level for data transmission?
A: 64 QAM, but 256QAM is coming. Another 33% increase should be expected when this happens. There are 6 levels of modulation stepping.
. 24GHz 1.4Gbs jedním směrem až 13km v poušti a čas dodání klasicky nejistý cena $3k za spoj a nenažranec s 50W a 48V.airFiber Q&A
Q: When
A: Ben will be answering this question later.
Q: Channel bandwidth
A: 100MHz wide, but will support two of those in FDD mode.
Q: ESD protection?
A: Built-in surge supression on all ports. Silicon Transient Protectors will support the main GB ethernet port and the management port.
Q: What are the power requirements?
A: PoE 48 volts
Q: How many can be co-located in the US on the same tower?
A: Because of the GPS sync you should be able to co-locate very well. No specifics on the numbers yet.
Q: How much spectrum is available?
A: 200MHz
Q: What is the lowest modulation rate?
A: 250meg/second is the slowest it will go.
Q: How much DC power does it use?
A: Less than 50 watts
Q: Will there be an SDK available for the radio?
A: Unknown at this time.
Q: Keeping spectrum clean was discussed. How are they working with other leaders in the industry to keep the spectrum clean with HDD?
A: This will never be like the 2.4GHz spectrum where someone will be running an omni. These are pencil beams that need to be carefully aimed at each other.
Q: Is it 700mbps in each direction, or 1.4Gbps in both directions?
A: 1.4 is aggregate. It is 700Mbps each way.
Q: What is the beamwidth of the antenna?
A: 2.5 degrees
Q: How does the radio handle rain fade on the longer distances?
A: Mechanisms are in place to control the gain of the overall system, but at very long distances rain fade is going to be an issue.
Q: Is there support for fiber to the radio.
A: At the moment there is no option, but if there is enough interest this is something they may pursure.
Q: Are there different speeds/frequencies/price points to be offered in the future?
A: No.. you can't have one that's cheaper and slower
Q: Has any consieration been put into a 5GHz failover so that when rainfade happens the link doesn't go down.
A: This has come up in conversation at Ubiquiti, but not in this product has it been implimented.
A: The unit, however, will reduce the modulation rate when it rains heavier.
Q: Is this a loss-less sytem?
A: Yes, the system will rate adapt without losing any data.
Q: From a software level, is there IPv6, will this work with AirControl?
A: Yes. The system is airOS based. Exact same feature set.
Q: What is the max high-rain fade link fade type setup?
A: In a high rain-fade area you might lose 4-5dB per KM. When the rain-fade happens, the fade happens only where the heaviest part of the storm is. As the link distance increases the chance of having more rain fade comes up.
Q: What is the constelation level for data transmission?
A: 64 QAM, but 256QAM is coming. Another 33% increase should be expected when this happens. There are 6 levels of modulation stepping.
