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Verizon states that M-5 is causing interference to their 4G

We had a strange service call today. A Verizon service tech called in to state that one of out radios were causing interference to their 4G network. We had them unplug the power injector and plug it back in. He stated that the interference went away while the power injector was unplugged. He further stated that the interference was on 780.00 Mhz. I don't know the IF for the radios or even if there could be a harmonic that could be a problem. The radio is a M5 associated with the AP at 5500 Mhz. I will be going out myself tomorrow and surveying the site to see what I can determine. Any thoughts, ideas, knowledge, wisdom or even laughs are more than welcome.

Ron
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Re: Verizon states that M-5 is causing interference to their 4G

We had a strange service call today. A Verizon service tech called in to state that one of out radios were causing interference to their 4G network. We had them unplug the power injector and plug it back in. He stated that the interference went away while the power injector was unplugged. He further stated that the interference was on 780.00 Mhz. I don't know the IF for the radios or even if there could be a harmonic that could be a problem. The radio is a M5 associated with the AP at 5500 Mhz. I will be going out myself tomorrow and surveying the site to see what I can determine. Any thoughts, ideas, knowledge, wisdom or even laughs are more than welcome.

Ron


A forum search would turn up a lot.
forum.ubnt.com/showthread.php?t=23553
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Re: Verizon states that M-5 is causing interference to their 4G

Good info, Thanks
i also have a 2.4 pointing the same direction, I'll see about moving the customer to that.
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Re: Verizon states that M-5 is causing interference to their 4G

I would try the foil tape mentioned in the linked post. That sounds interesting..
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Re: Verizon states that M-5 is causing interference to their 4G

The bullets use an external antenna and the M5s use an internal Yagi which I wouldn't want to cover up. I thought of that though.:manwink:
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Re: Verizon states that M-5 is causing interference to their 4G

The bullets use an external antenna and the M5s use an internal Yagi which I wouldn't want to cover up. I thought of that though.:manwink:


M5's use an internal yagi? Can you explain?
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Re: Verizon states that M-5 is causing interference to their 4G

M5 just tells it is made for the 5.8ghz frequency band. The real question: was it a bullet m5, nanotstation m5, nanostation loco m5, or a rocketdish with a m5 rocket radio? Now the only two I'm aware of that could possible be connected to a yagi antenna would be the rocket m5 or the bullet m5 and that still would be an external connection. The others use internal patch panel antennas on a PCB I believe.
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Re: Verizon states that M-5 is causing interference to their 4G

The bullets use an external antenna and the M5s use an internal Yagi which I wouldn't want to cover up.


Bullet and Rocket use external antennas.
NanoBridge and airGrid have included external dish/grid antennas/reflectors.
Nanostation and Loco have internal flat panel antennas, aka patch antenna.
AirStream has external antenna.
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Re: Verizon states that M-5 is causing interference to their 4G


AirStream has external antenna.


?????

Yeah, I guess that RV would need an external antenna. :manhappy:
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Re: Verizon states that M-5 is causing interference to their 4G

I have seen the same issue with the M5 causing interference at two other locations at the same frequency causing VZW 4G network problems.
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Re: Verizon states that M-5 is causing interference to their 4G

There has been some discussion today on the WISPA members list about UBNT having a fix for interfering with Verizon LTE equipment.
I assume it's a software fix.
Is this fix in any of the current firmware versions released or beta?
If not can someone from UBNT give us details on what the fix is.

I am on several tower sites with many cellcos.
I would rather fix it now before it becomes a problem.
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Re: Verizon states that M-5 is causing interference to their 4G

There has been some discussion today on the WISPA members list about UBNT having a fix for interfering with Verizon LTE equipment.
I assume it's a software fix.
Is this fix in any of the current firmware versions released or beta?
If not can someone from UBNT give us details on what the fix is.

I am on several tower sites with many cellcos.
I would rather fix it now before it becomes a problem.


Again, a forum search would turn up a lot.
forum.ubnt.com/showpost.php?p=430260&postcount=44
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Re: Verizon states that M-5 is causing interference to their 4G

see post 44

Hi,
If you're running into this, please contact support@ubnt.com and we can help.
There's nothing wrong with the Ubiquiti equipment, these emissions are normal & expected, and fall within any legal limits (these are tested during FCC approval).

However, we have some test firmware with changed CPU clock speed that makes the harmonic fall outside Verizon's licensed band. If you're working with Verizon, we can give it to you to try.

Thanks,
Matt


A forum search would turn up a lot.
http://forum.ubnt.com/showthread.php?t=23553
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Re: Verizon states that M-5 is causing interference to their 4G

see post 44


See post #12, this thread :manwink:
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Re: Verizon states that M-5 is causing interference to their 4G

Again, a forum search would turn up a lot.
forum.ubnt.com/showpost.php?p=430260&postcount=44


but you still gotta read it :lol:
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Re: Verizon states that M-5 is causing interference to their 4G

Problem resolved, The custom firmware did it. Easy fix. Thanks Matt and to all who replied to my plea for help.