need fcc details

[jp498]

I don't want to order any quantity of these till this gets cleared up.

I need Ubiquiti to tell what antennas are certified for this and provide more information.

According to the fcc, SWX-B2 certification is only tested with an omni-6 antenna. The Part-15 rules are commonly understood to be that we can only use similar style and gain or smaller gain that what it is certified with.

https://fjallfoss.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=945300&fcc_id='SWX-B2'

[WHT]

Mike...

You have any info on this?

[UBNT-Mike.Ford]

Hey Guys,

Im checking into this for you.

Thanks,

Mike

[slithral]

part 15 applies that it cannot exceed a set output power. do the math. you're fine.

[WHT]

jp498...

The Bullet 2 has been certified (as far as we know) for only a 6 dBi gain antenna. That means you cannot use it with a 12 dBi omni, a 14 dBi sectored, nor with a 24 dBi grid antenna.

I assume you would want to use the Bullet 2 with an external 12 dBi gain omni antenna for a PtM access point. In this case, you can only use the 6 dBi antenna.

If you want to use it as a PtP client with a 24 dBi gain directional antenna, you are still limited to 6 dBi antenna.

[HozicEmir]

so is illegal if u put 24dbi antenna on bullet on max power?

in my country it is, and if some legal authority start to measure up our TxPower we all go to jail.

[jp498]

I would like to be able to use it with 16dbi vagis and 24dbi grids.

[WHT]

in my country it is, and if some legal authority start to measure up our TxPower we all go to jail.
In the colony where our farm is, if you have the internet, you're children can no longer attend their private school. Likewise if you have a TV in yer house. And everyone is encouraged to remove the antennas on their cars and replace the radio with a blank faceplate because the "englishmen" will corrupt you.

[guidonet]

HozicEmir... come to my country and have fun!!!
We don´t worry about that.
Come on AMIGO

[HozicEmir]

hahahaha u killing me guys
I'm in Europe and here is 20dbm in 2,4 range, but we usually have 19-20dbm Tx on sectors and 18dbm with 20dbm grid clients and all work like charm up to 10km with good LOS, and I refuse to connect some in network who dont have clear LOS.
So tnx for invitation, but im good here, maby someday I'l come to see pampas and gauchos and Boka Juniors in action. Also Maradona is now selector Arg maby make something more on next mundial :)

[guidonet]

Hey you welcome AMIGO.
Here single we must be taken care of of the hail… not of the jail

[jp498]

Well, I just cancelled my initial order/backorder of bullets and asked for locos instead.

I perceive ubnt bullets as potentially inexpensive simple cpe. However, not having power supplies/injectors makes for more work preparing for installs and keeping inventory. I don't want installs to be a parts goosechase, nor do I want to make ordering three times more work than necessary sourcing power injectors and power supplies separately. I'll probably save money by using locos because they come with those items.

FCC permitted antenna uncertainty was also a factor. I won't be using an external antenna for inexpensive CPE, so there is no need to worry about what is or isn't certified.

[Wolfie001]

To answer your question would need more information about if you are going for a Point to Multi Point (PtMP) were the answer would be no or just Point to Point (PtP) were the answer would be maybe so here is the formula for both. (if you are in Canada see Canadian Rules)
The FCC regulations for PtMP allows only 36 dBm (4 watts) EIRP when omni antennas are used. This is 30 dBm (1 watt) into a 6 dBi antenna. If you use a 10 dBi omni antenna, you must limit your transmitter (or amplifier) to 26 dBm (10 + 26 = 36 dBm). For a PtP panel antenna, more power is allowed (see separate FAQ on this). Power is measured at the antenna connector, so subtract any cable loss between the amplifier and the antenna. Refer to the following table:
Power at antenna (dBm/Watts) Antenna Gain (dBi) EIRP (dBm) EIRP (watts)
30 dBm (1 W) 6 36 4
27 dBm (500 mW) 9 36 4
24 dBm (250 mW) 12 36 4
21 dBm (125 mW) 15 36 4
18 dBm (62 mW) 18 36 4
15 dBm (31 mW) 21 36 4
12 dBm (15 mW) 24 36 4
Can I use any antenna of my choice for my AP or CPE antenna?
Yes, up to the highest gain antenna specified in the FCC certification information or the product literature that accompanies the device. (See FCC 04-165 adopted July 8, 2004, 15.204(c)) Those people in countries other than the US will need to consult their own regulations. If you are not sure if the antenna that you plan to use is certified or authorized with the radio system, ask the radio or antenna manufacturer/vendor. If you have the radio FCC ID, you can check on the FCC web site for certification information.
How much power can I transmit with in my 2.4 GHz Point-to-Point system?
According to FCC regulations, 2.4 GHz Part 15.247 point-to-point transmitters may use a 30 dBm transmitter with a 6 dBi antenna. For a 3 dB increase in antenna gain, the transmitter power output must be reduced by 1 dB. Power is measured at the antenna connector, so subtract any cable loss between the amplifier and the antenna. Refer to the following table.
Power at antenna (dBm/watts) Max Antenna Gain (dBi) EIRP (dBm) EIRP (watts)
30 dBm (1 W) 6 36 4
29 9 38 6.3
28 12 40 10
27 dBm (500 mW) 15 42 16
26 18 44 25
25 21 46 39.8
24 dBm (250 mW) 24 48 63
23 27 50 100
22 30 52 158

[jp498]

Can I use any antenna of my choice for my AP or CPE antenna?
Yes, up to the highest gain antenna specified in the FCC certification information or the product literature that accompanies the device. (See FCC 04-165 adopted July 8, 2004, 15.204(c)) Those people in countries other than the US will need to consult their own regulations. If you are not sure if the antenna that you plan to use is certified or authorized with the radio system, ask the radio or antenna manufacturer/vendor. If you have the radio FCC ID, you can check on the FCC web site for certification information.


That's what I'm inquiring about and waiting for answers on.

[Wolfie001]

as i understand it, if you know your radio output power, you can calculate for line loss like cable length and lightning suppressor , and if you know the antenna gain, as long as you don't go past a max output at the antenna then the FCC is happy if i explained this wrong feel free to chime in say for example i was using a 24 dbi Grid and a bullet. nothing in the middle.
so i have 24 dbi plus the bullet i would have to limit the bullet transmit power to 12 db giving a total output power of 36. that's the way i read the fcc article at least. what i posted WAS in a spreadsheet, but it lost the formatting i can send you a word other other doc if you want it in a more easy to read format. and again if I'm wrong any one feel free to chime in.

[WHT]

This questions is, has the Bullet 2 been listed with the FCC for more than a 6 dB antenna

[rconaway]

I think Ubiquiti did a blanket certification for the Bullet that covers the HP model also. It would have been better to have the Bullet 2 certified with a 15dBi omni which would really kick in a municipal wireless. If we get a project of that type which we are actively working on, then we will go after the certication. A 21dBi radio with 15dBi antenna will outperform a 30dBi radio with 6dBi antenna since none of the clients connecting to it are probably more than 26dBm anyway with most at 20dBm or less. This means 1/2 as many or less AP's.

We have this type of setup in the Suprise Baseball stadium 80' up on the towers.

[UBNT-Mike.Ford]

Hey Guys,

I am trying to get clarification on this.

Thanks,

Mike

[WHT]

rconaway...

I think Ubiquiti did a blanket certification for the Bullet that covers the HP model also

http://forum.ubnt.com/forum/viewtopic.php?t=6958

I suspect UBNT submitted a Picostation HP to the FCC before they posted the spec sheets on the UBNT website.