I have two XR2’s in an rb100 with an atheros A wds backhaul. The XR2s will eventually power two sectoral H-Pole antennas but in testing using th existing 9dB omni, the performance does not even equal the prism pcmcia cards in the current soekris AP. One XR2 barely gets any association, I think it is defective. The other XR2 gets as many associations as the working AP but the signal levels are not as good… avg around -80-90dB The prism cards are getting -65-75dB on equivalent connections.
Has anyone else seen these performance problems? Any ideas? The power of the cards has been left at default - perhaps I should set it higher at 23dB (13dB showing because of the 10dB offset).
Try setting the TX Power down to 7db on each card, these cards actually output 10db higher that you have set for, so 7 = 17db.
Ubiquiti XR2 SPecs: http://www.ubnt.com/downloads/xr2datasheet.pdf
I’m not sure but I don’t think a 100 will do the job you are wanting either, I beleive you will at least need a 532…
It looks like a 133 but when we bought it I thought it was a 500 series, which I cannot find on routerboard.com - one with 3 mini PCI slots and 5 ethernet ports that is.
Should I buy a 12 V. 1A. POE supply then? Or could someone reccommend something better? So far I’ve only found 12V. 1A. from our usual vendors.
It sounds as though you have an RB-153
Performance: MIPS32 4Kc based 175MHz CPU
Memory: 32 MB Memory / 64 MB Storage
Connectivity: 5 Ethernet, 3 miniPCI, 1 DB9
No the 12Vdc power supply @ 1 amp is sufficient.
Just make sure and re-pin the power jumper on the board for 12Vdc if the jumper option is on the 153.
With my experience you would really want to get a RB-532 or 532A.
I beleive that when people mention the board does not have enough power it seems they are referring to the processor primarily and then also the on-board transformer is slightly different from the 100 to 500 series RB’s.
No the 12Vdc power supply @ 1 amp is sufficient.
Just make sure and re-pin the power jumper on the board for 12Vdc if the jumper option is on the 153.
With my experience you would really want to get a RB-532 or 532A.
I beleive that when people mention the board does not have enough power it seems they are referring to the processor primarily and then also the on-board transformer is slightly different from the 100 to 500 series RB’s.
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Oh. I see. So the xr2’s will require more processor as well as a higher current POE supply.
No the current on is 48V 35mA. I will buy a 18V. 1A. for it.
One last question… buying a rb532 will leave me with only two minipci slots and I need a thrid for A backhaul. Should I buy an rb502 daughetrboard to get the extra slot and will the 532 power the 2XRs and an Atheros AR5212 doing A band with a good 18V. 1A. POE supply?
Otherwise if the rb520 doesn’t have the ass I will route to another AP to do the backhaul.
thanks again.
A note: Today I have managed to connect to one of my new RB-532/XR 2 at a client which is roughly 3 miles out from the AP.
Then I turned the TX power of the XR2 up to 15db which in reality is 25db to establish a better receive signal strength at the SU.
This weekend I will place the AP and sector at the top of this particular tower to enhance range and to view.[/quote]
No the current on is 48V 35mA. I will buy a 18V. 1A. for it.
One last question… buying a rb532 will leave me with only two minipci slots and I need a thrid for A backhaul. Should I buy an rb502 daughetrboard to get the extra slot and will the 532 power the 2XRs and an Atheros AR5212 doing A band with a good 18V. 1A. POE supply?
Otherwise if the rb520 doesn’t have the ass I will route to another AP to do the backhaul.
thanks again.
OK, the can be repinned to operate on 12 OR 24 volts I beleive it is.
Yes I beleive that the 532 in tandem with the 502 daughterboard would be adequate with the 18Vdc 1a POE injector.
I’m not sure if you are in US or other country, at either rate, I strongly suggest you speak with your supplier detailing your configuration requirement to make sure you are not making any mistakes in this purchase.
If you are in the US you could ask Eric Wiege at Titanwirelessonline.com.
kiira - I would suggest getting the new revisoin 5 532, much increased power(wattage) capacity. The older revision 4 boards had a maximun of 14watts including the 532 itself and extension cards which leaves about 10 watts for cards. According to Ubiquiti’s datasheet the XR2 has a maximum draw of 1.3 amps at 3.3 volts (4.3 watts), two of these doesn’t leave much for a third card. Plus I’m sure the 502 expansion uses some power. However the new revision 5 boards have a maximum of 24W with 16.5 available for extension cards. I haven’t tested, but this should be ample for your needs. We have run 2 SR2’s in a R4 board without issue (each card draws 1.1 amps) but have had issues with one SR2 and one SR5 (SR5 draws 1.3 amps) the extra .2 seemed to put it over the edge. We have run one XR5 (1.8 amps) and one XR2 (1.3 amps) in a R5 532 without issue. Hope this helps.
eburgash, giganet, everyone thanks for all this information. The owner bought these boards without consulting so I couldnt research them earlier, I have ordered a 532 and I believe it a revision 5, also a rb502 daughter card and an 18V. 1A. PS. We have two H-Pole arrays just waiting for them. Oh I am Finnish but living in the US.
We run the 48v/40w on all of our AP’s (532a’s) and clients(112’s). We have had no issues with power. A couple of these are running 3 SR9’s as AP’s. We are about to add a sr5 in a couple of our boxes that have 502 boards fully populated. We will then be having 2 xr5 and 2 cm9 in those boxes. I think these 48/40 supplies in the 532 will be plenty.
We are currently testing the ap’s in 24v to see if we can do a better job with solar power.
Also, we are testing the 112’s at 18v so we can use the same power supplies we use on the 133 boards.
Virtually of my towers are solar powered, I have both 12Vdc and 24Vdc systems.
I have 532’s at one tower operating on 12Vdc without problem as I do have 532’s at 24Vdc sites.
I have seen that some users claim that the 532 is less apt to emit un-wanteed noise opearting at 12Vdc.
If anyone needs input or suggestions how to budget your solar system output requiremenets I can help with that to save money and mistakes for those not able to calc true usage at a site.
I agree 100% with whoever said the 532r5 would help the situation out, the higher dedicated power to the mini-pci’s has helped a lot of my customers out when coupled with the higher powered cards.
Something is catestrophically wrong. I have the rb532 rev. 5 and 502 with 2 XR2 and an atheros 5G. backaul. Power is 18V. 1A. Associations are very low and weak. CCQ varies between 18% and 32% Noise floor is good at -101 though. I have the card I am testing at 9dB (19dB) which seemed about right. Using the old prism carded AP I saw all our customers associated from -65 to -75 and overall-tx-ccq=98%
I just don’t know what to do. The owner thinks these cards are savior for our customer base and I do everything and they still suck!
Have you selected the correct antenna connector?
If the board wasn’t rebooting, it’s unlikely to be power related.
Specs say XR2 consumes 2.97W @ 24dBm (nothing less in datasheet, so I’d assume it can’t go lower?)
RB532 r5 has 20W spare for extension cards, so you’ve got loads left.
Your 18v/1A PSU supplies 18W, the 48v/0.35A supplies 16.8W
Your total is about 9.5W, so either PSU would be OK.
