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marekm
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RB750UP questions/suggestions

Mon Mar 14, 2011 7:26 pm

1. As some people already suggested - please do shielded Ethernet ports, for proper grounding of radios over FTP cable shield.
2. Are the PoE power switches and current monitors in the high side (positive)? Otherwise it may not work properly if the radios have grounds (negative) shorted by cable shields (and sometimes also antenna mounts and the mast).
3. It would be nice to see just boards without plastic cases and power supplies for lower cost, which could be built into larger box (commonly used in alarm/CCTV systems) with 13.8V power supply and sealed lead acid battery backup.
4. With the higher total power supply current, please consider screw terminals for thick wires (more robust than 5.5/2.1 connector), and third one for RJ45 ground.

With all this, the RB750UP would be perfect for my small repeaters (running a few, currently with dumb 5-port 10/100 switches - some old 3Com with shielded ports, accepting 10-30V DC power, easy to modify for PoE with some soldering, boards built into the box with power supply and battery backup).
 
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Re: RB750UP questions/suggestions

Mon Mar 28, 2011 3:06 pm

A RB750GUP would be good too...

Pat
 
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Re: RB750UP questions/suggestions

Mon Mar 28, 2011 3:09 pm

Im agree too..
 
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Re: RB750UP questions/suggestions

Mon Mar 28, 2011 6:19 pm

Also, hopefully in the future Mikrotik will come out with one that has 10+ ports.
 
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Re: RB750UP questions/suggestions

Thu Jul 28, 2011 12:22 am

Is this thing still alive?

RB750UP is needed.
 
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janisk
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Re: RB750UP questions/suggestions

Thu Jul 28, 2011 1:03 pm

it is alive and kicking. I have several on my desk running.
 
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Re: RB750UP questions/suggestions

Sun Jul 31, 2011 3:23 am

So does that mean US distributors will have any in the next couple weeks?

How RB751U and RB751G?
 
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Re: RB750UP questions/suggestions

Sun Aug 07, 2011 3:25 am

We just got hit by lightning. Now I get to rebuild with new stuff, tho I was hoping for better circumstances. Its working patched for now.

Now would be an awesome time to find out the RB750UP is available. It would make my power box much neater.

What's the time frame looking like?
 
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Re: RB750UP questions/suggestions

Thu Aug 11, 2011 10:28 am

Can you share launchdate with us? Will it be available in Septembre?
 
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Re: RB750UP questions/suggestions

Thu Aug 11, 2011 10:39 am

yes, it should be available in september
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Re: RB750UP questions/suggestions

Fri Aug 12, 2011 1:16 am

I'll be buying at them in September. :)
 
ilius168
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Re: RB750UP questions/suggestions

Wed Sep 07, 2011 10:11 am

It's September.. any updates (launchdate) on RB 750UP yet? :D
 
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Re: RB750UP questions/suggestions

Wed Sep 07, 2011 2:21 pm

sadly last news is that it is pushed back to end of October.
 
complete2006
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Re: RB750UP questions/suggestions

Wed Sep 07, 2011 6:12 pm

More than a bad message. :(
I don't know where the problem is to switch power on and off.
I can't understand MTs business strategy. In the past everthing was a total secret and suddenly a 180 deg turn was made with a mass announcement of new products. Now I see that we can't give anything on the given timelines...
Really bad :?
 
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Re: RB750UP questions/suggestions

Wed Sep 07, 2011 10:57 pm

That's probably why they didn't announce stuff. Inconsistencies in the supply line make them look bad.
 
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Re: RB750UP questions/suggestions

Thu Sep 08, 2011 5:21 am

Doh!!!
(like homer simpson said.... :( )
 
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Re: RB750UP questions/suggestions

Thu Sep 08, 2011 9:54 am

those pesky suppliers :(
 
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Re: RB750UP questions/suggestions

Sat Sep 10, 2011 5:08 am

Will I be able to buy any of these at the MUM? Even a half dozen would help me finish some projects I have been waiting months to complete.
 
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Re: RB750UP questions/suggestions

Sun Sep 11, 2011 1:14 am

I am also waiting since June for RB750UP. I need to rebuilding the AP. Unfortunately, after a while begins to fall again the snow, so I'll have to take solder and do something myself. I think neither will there be this year.
 
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Re: RB750UP questions/suggestions

Mon Sep 12, 2011 11:51 am

depends about witch MUM exactly you are talking about.

Anyway, these are good looking boards. Doing full load testing.
 
complete2006
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Re: RB750UP questions/suggestions

Wed Sep 14, 2011 8:42 am

... than it should be no problem to produce them. :(

As the others said: projects are stopped here. We trusted MTs information that the boards will come 1st: in August :2nd: in September and 3rd: in Oktober :?
 
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Re: RB750UP questions/suggestions

Wed Sep 14, 2011 8:43 am

complete2006, I think to use something in your country, you need certification. this is only one of the reasons of course.
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marekm
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Re: RB750UP questions/suggestions

Wed Sep 14, 2011 1:39 pm

What certification? RB750UP has no wireless. And, projects are stopped here as well...
 
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Re: RB750UP questions/suggestions

Sat Sep 17, 2011 1:14 am

October 13 MUM in Las Vegas. Will a small quantity of 750UP's be available?
 
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normis
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Re: RB750UP questions/suggestions

Mon Sep 19, 2011 8:33 am

October 13 MUM in Las Vegas. Will a small quantity of 750UP's be available?
probably for ordering, but we usually don't sell anything on the MUM
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complete2006
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Re: RB750UP questions/suggestions

Mon Oct 10, 2011 5:29 pm

Now it is nearly mid of october. Any 750UP?
 
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Re: RB750UP questions/suggestions

Tue Oct 11, 2011 11:55 am

Las Vegas, Nevada there are 750UP in the wild :)

AFAIK sample there is how the final product will look like/act
 
complete2006
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Re: RB750UP questions/suggestions

Wed Oct 12, 2011 8:17 am

That means we will not see them in production in 2011?
 
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Re: RB750UP questions/suggestions

Thu Oct 13, 2011 12:44 pm

i hope we will, at least they told me - this year :)
 
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Re: RB750UP questions/suggestions

Fri Oct 28, 2011 4:36 am

2 weeks after MUM... Can these be ordered yet?

Ironically I was in the midwest working on new sites during MUM (although I live in Vegas), so I didn't see them.

Do any of the MUM videos talk about the product at all? Did anyone see or touch one?

These will be a huge time saver on grain legs as I'll be able to split power at the top rather than running a new 100 ft piece of cat 5 every time I add a radio.
 
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Re: RB750UP questions/suggestions

Fri Oct 28, 2011 2:05 pm

currently planned this year (December)

how powerful devices you want to connect to them?
 
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Re: RB750UP questions/suggestions

Thu Nov 03, 2011 2:16 am

I plan on several topologies, but mostly they will be Ubiquiti Nanostation M2, Nanobridge M5, Rocket M900, Loco M900.

Most commonly I am thinking a Nanobridge M5 backhaul feeding Rocket M2 and a couple Loco M900's used as sectors.

But another application will be using a 750UP to split a single POE supply to power two devices - removing the need to run a new cable. I'll simply run 2 pair for +VDC and 2 pair for -VDC then power 2-3 radios off the 750UP.

How many of these devices will I be able to power successfully off a 750UP?

I am excited about this product, if it ships. I saw Ubiquiti announce their Toughswitch, but I can't imagine them beating you to market.

No offense, but if you somehow ship slower than Ubiquiti, you are doing it wrong. :-(
 
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Re: RB750UP questions/suggestions

Thu Nov 10, 2011 8:43 am

Christmas is near and I send my whises to Santa :D
 
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Re: RB750UP questions/suggestions

Wed Nov 16, 2011 10:54 am

BUMP
 
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Re: RB750UP questions/suggestions

Wed Nov 16, 2011 11:02 am

Will RB750UP have a voltage monitor?
 
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Re: RB750UP questions/suggestions

Wed Nov 16, 2011 11:03 am

Will RB750UP have a voltage monitor?
yes! voltage, current and power consumption
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Re: RB750UP questions/suggestions

Wed Nov 16, 2011 12:58 pm

ESD on ports?
 
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Re: RB750UP questions/suggestions

Wed Nov 16, 2011 7:00 pm

We where selling this hardware on many installations since june.. As the board still not exists, we are implementing the products like (NOT TO DO), using poe convertors, many power jacks one to many, etc.. unf unf!

Waiting the product to avoid installing many strange things. Finally it seams it will be a happy christmas!
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Re: RB750UP questions/suggestions

Sat Nov 19, 2011 9:38 pm

about MTU? 1524? 1600?
 
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Re: RB750UP questions/suggestions

Thu Dec 01, 2011 7:55 am

It is 1st of December. Will we be able to see the RB750UP before end of the year? Why is it taking so long to release this hardware?
 
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normis
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Re: RB750UP questions/suggestions

Thu Dec 01, 2011 8:21 am

It is 1st of December. Will we be able to see the RB750UP before end of the year? Why is it taking so long to release this hardware?
distributors already have information about it, ask in the shop :)
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complete2006
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Re: RB750UP questions/suggestions

Mon Dec 05, 2011 1:06 am

Will it have eth-ports with shield?
 
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normis
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Re: RB750UP questions/suggestions

Mon Dec 05, 2011 8:48 am

Will it have eth-ports with shield?
Yes
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Re: RB750UP questions/suggestions

Wed Dec 07, 2011 2:42 pm

RB750UP is now available for 59.95$

http://routerboard.com/RB750UP

Image
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Re: RB750UP questions/suggestions

Wed Dec 07, 2011 3:08 pm

Woohoooo, finally available.....

Wonder when it will get here....
 
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Re: RB750UP questions/suggestions

Wed Dec 07, 2011 3:10 pm

awesome. I will try it in a hotel : D!
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Re: RB750UP questions/suggestions

Wed Dec 07, 2011 3:51 pm

RB750UP is now available for 59.95$

http://routerboard.com/RB750UP
Wonderful!

Do you have a sample device online, where we can log into it and have a look at its setup? What I am curious to see is how power is turned on/off to each of ports2-5.
 
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Re: RB750UP questions/suggestions

Wed Dec 07, 2011 4:01 pm

/interface ethernet set ether2 poe-out=off
/interface ethernet set ether2 poe-out=auto
quite simple, nothing to experiment with
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Re: RB750UP questions/suggestions

Wed Dec 07, 2011 4:57 pm

/interface ethernet set ether2 poe-out=off
/interface ethernet set ether2 poe-out=auto
quite simple, nothing to experiment with
Brilliant, thanks!

I have to admit that I was getting tired of waiting for the 750-UP so a few days ago I took apart my RB750 with an eye to hardwiring PoE to all of the ports (good enough for my application). Imagine my surprise to see that that my RB750 circuit board already had the traces needed to switch the power to each of the for LAN ports, only the isolation diodes and a few other discrete parts weren't populated.

(BTW I was really quite pleased with my look inside the RB750. Such a nice small size, no screws used to hold the case together, the circuit board being held in place by support posts moulded into the case and the ethernet connector block interfacing with the hole in the panel. What a nice clean minimalist design!)
 
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Re: RB750UP questions/suggestions

Thu Dec 08, 2011 7:13 am

Hello! Does it support a "USB power reset" feature?
 
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Re: RB750UP questions/suggestions

Thu Dec 08, 2011 6:23 pm

Would also like to see an RB250P. Is this on the cards?
 
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Re: RB750UP questions/suggestions

Thu Dec 08, 2011 11:29 pm

Practically, what can we power through those ethernet ports?

RB435G with 3 x R52Hn or SR-71?

RB433AH with 2 x R52Hn or SR-71?

RB411AH with R52Hn or SR-71?

RB411R?
 
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 9:12 am

From manual: Max current is 500mA per port.
Lets assume that it comes with 24V power supply (close to max)

So you have 12W of power max available per port.
AFAIK one normal wireless card can consume up to 3W, High power card 6-7W and super high power cards up to 10W

So do your math.
Last edited by macgaiver on Fri Dec 09, 2011 10:31 am, edited 1 time in total.
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 9:47 am

From manual: Max current is 500mA per port.
Lets assume that it comes with 24V power supply (close to max)

So you have 12W of power max available per port.
AFAIK one normal wireless card can consume up to 3W, High power card 6-7W and super high power cards up to 10W

So do your math.
Anyone who's done the math will realise that 500mA is absolutely useless.

In case you couldn't work it out for yourself, that post was intended to be sarcastic.

After waiting for 9 months for this product, it now gets hamstrung by the fact that it's can't actually power anything useful.
 
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 9:49 am

any wireless client can be powered. RB711, SXT, Groove, etc.

What's not "useful" for you, is plenty useful for many others.
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 9:57 am

After waiting for 9 months for this product, it now gets hamstrung by the fact that it's can't actually power anything useful.
Judging on form factor and targeted price range it was obvious what this product is targeted for, and was childish to expect something more.
Irony or not but 60$ device can't solve all your problems.
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 10:28 am

In this part of the world, we usually run 4mm armoured electrical cables with 12V or 24V DC up to boxes located high on towers. We then split that to DC plugs that power an RB750 and some four POE injectors, those in turn power other devices such as MT or UBNT backbone links or customer facing equipment.

It's really not a good idea to run POE (even in UBNT Toughcable) up masts that are shared with other WISPs and VHF and UHF antennas. So we have to take power all the way to where the radios are.

The bigger the device, the higher the wind loading, the greater the torsional forces placed on a tower during high winds.

It's important that boxes therefore be kept small. Which means all the extra POE injectors are making it very tight in the boxes. You should try dangling from a harness off a mast that's 250mm wide and working in one of these boxes 30m in the air. It's really not fun.

I have been looking forward to this product for many months, but as it is, it can barely power a UBNT Nanostation and can't even power an IP camera. It's useless for our purposes.

Macgaiver, how are you planning on implementing these devices on your network?

Normis, as I've stated in the past, it's time for MUM Cape Town so we can show you guys the difference between the theory in the lab and the reality on the bush.
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 10:47 am


Anyone who's done the math will realise that 500mA is absolutely useless.

In case you couldn't work it out for yourself, that post was intended to be sarcastic.

After waiting for 9 months for this product, it now gets hamstrung by the fact that it's can't actually power anything useful.
for comparison - 802.3af supports 15W output power for 48V, so it is even less amps supplied.
 
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 10:51 am

I would most probably replace some power strips and RB power adapters with this device, to power some web security cameras and small RBs.
Main feature i'm looking for is a possibility to remotely power cycle powered devices without climbing or restarting whole installation.
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 11:09 am

Hello! Does it support a "USB power reset" feature?
 
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 11:11 am


for comparison - 802.3af supports 15W output power for 48V, so it is even less amps supplied.
And what happens when we put 48V into a RB750UP?

Smoke?
 
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 11:12 am

no, it has overvoltage protection, it will just not work.
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 11:13 am

I would most probably replace some power strips and RB power adapters with this device, to power some web security cameras and small RBs.
Main feature i'm looking for is a possibility to remotely power cycle powered devices without climbing or restarting whole installation.
Look here

http://forum.mikrotik.com/viewtopic.php ... 57#p293557
 
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 11:14 am

no, it has overvoltage protection, it will just not work.
30V or 28V?
 
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Re: RB750UP questions/suggestions

Fri Dec 09, 2011 11:15 am

yes, in that range (29-30V)
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Re: RB750UP questions/suggestions

Tue Dec 13, 2011 2:50 pm

Hello! Please, could you answer my question: does RB750UP support "reset usb power" feature? I need it to reboot 3G USB stick, and you wrote some time ago that ALL new products will support it...
 
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Re: RB750UP questions/suggestions

Tue Dec 13, 2011 2:51 pm

Currently only SXT and OmniTIK have this feature. So, no - RB750UP doesn't have usb power reset.
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remezen
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Re: RB750UP questions/suggestions

Tue Dec 13, 2011 2:52 pm

Should I consider buying on of those two for indoor use as a 3g stick router?
 
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Re: RB750UP questions/suggestions

Tue Dec 13, 2011 2:53 pm

Neither of them is designed for indoor use. Why do you need power reset if it's indoors? Just unplug router power if the 3G device becomes unresponsive, but this should not happen often. Why does it hang so ofen, that you need to reset it? Maybe just get a better modem?
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remezen
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Re: RB750UP questions/suggestions

Tue Dec 13, 2011 2:57 pm

Well, maybe you are right... All of your products support watchdog for self-rebooting, do they?
 
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Re: RB750UP questions/suggestions

Tue Dec 13, 2011 2:58 pm

Well, maybe you are right... All of you products support watchdog for self-rebooting, do they?
yes, but the problem is - if your 3G modem is completely locked up, soft reboot will not help, you need to physically unplug power. otherwise you could script the reboot, but it doesn't help.
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Re: RB750UP questions/suggestions

Tue Dec 13, 2011 3:01 pm

The thing is that now I have Dlink router and Huawei stick. The system hangs sometimes - but I don't know wether it's a Dlink or Huawei hanging... )
Edit: I think I'll just have to buy Mirkrotik to find out)
 
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Re: RB750UP questions/suggestions

Sat Dec 17, 2011 10:36 pm

In this part of the world, we usually run 4mm armoured electrical cables with 12V or 24V DC up to boxes located high on towers. We then split that to DC plugs that power an RB750 and some four POE injectors, those in turn power other devices such as MT or UBNT backbone links or customer facing equipment.

It's really not a good idea to run POE (even in UBNT Toughcable) up masts that are shared with other WISPs and VHF and UHF antennas. So we have to take power all the way to where the radios are.

The bigger the device, the higher the wind loading, the greater the torsional forces placed on a tower during high winds.

It's important that boxes therefore be kept small. Which means all the extra POE injectors are making it very tight in the boxes. You should try dangling from a harness off a mast that's 250mm wide and working in one of these boxes 30m in the air. It's really not fun.

I have been looking forward to this product for many months, but as it is, it can barely power a UBNT Nanostation and can't even power an IP camera. It's useless for our purposes.

Macgaiver, how are you planning on implementing these devices on your network?

Normis, as I've stated in the past, it's time for MUM Cape Town so we can show you guys the difference between the theory in the lab and the reality on the bush.
why 0.5amps is not enough for you?... that means 12watt power consumption/device

so use higher voltage... like 24volts and the amps used by your device will be much lower... fo ex... if you have a device that consumes 6watt.... that means that if you will run it to 12 volts will draw 0.5 amps... and if you run it to 24 volts it will draw 0.25 amps

so it means.. that 0.25 is allready half of maximum 0.5amps per port on the rb750u

most ip cameras will not consume more that 8-10 watt, lets not talk about profesional screen wiper.... heated motorised cameras.... be resonable.. rb750up was not made for us to power a christmass tree lights from its poe ports
 
acidu
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Re: RB750UP questions/suggestions

Sat Dec 17, 2011 10:55 pm

hey MIKROTIK look at this

http://www.remotemonitoringsystems.ca/r ... meters.php

I do not know what is the interest from you to this type of hardware... but is can make something like it for solar site monitoring and many other futures.. like controlling some relays, humidity sensors, external temp sensors, proximity sensors,switch alarm triggers....and so on, I think it will be something huge
 
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Re: RB750UP questions/suggestions

Sun Dec 18, 2011 12:11 am

why 0.5amps is not enough for you?... that means 12watt power consumption/device
Tell me, how much power does a RB435 with 3 x SR-71 draw? When using 24V?

How much does a UBNT Rocket M5 draw? What size power supply get shipped with a UBNT Rocket M5 or M2?
 
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Re: RB750UP questions/suggestions

Sun Dec 18, 2011 12:20 am

why 0.5amps is not enough for you?... that means 12watt power consumption/device
Tell me, how much power does a RB435 with 3 x SR-71 draw? When using 24V?

How much does a UBNT Rocket M5 draw? What size power supply get shipped with a UBNT Rocket M5 or M2?
Do not know about rb435 but you can find it yourself using a power meter reading amps putting the power meter in series with your rb435, what I know is that ubnt devices wouldn't draw more than 8watt, they all come with 24v 0.5 ah
 
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Re: RB750UP questions/suggestions

Sun Dec 18, 2011 12:33 am

why 0.5amps is not enough for you?... that means 12watt power consumption/device
Tell me, how much power does a RB435 with 3 x SR-71 draw? When using 24V?

How much does a UBNT Rocket M5 draw? What size power supply get shipped with a UBNT Rocket M5 or M2?
Do not know about rb435 but you can find it yourself using a power meter reading amps putting the power meter in series with your rb435, what I know is that ubnt devices wouldn't draw more than 8watt, they all come with 24v 0.5 ah
UBNT Rocket comes with 24V 1A PSU.
Datasheet: http://www.ubnt.com/downloads/datasheet ... asheet.pdf

435G - 23.5W without cooling.
Datasheet: http://routerboard.com/pdf/285/rb435g.pdf

Are you willing to bet your wages on the fact that a product may work under certain circumstances, but will fail as the load increases?
 
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Re: RB750UP questions/suggestions

Sun Dec 18, 2011 12:39 am

I had 3 x RB411 with R52 and a RB750 running happily off a 24V 50W Meanwell power supply. They have 120 degree antennas and are part of a large access point. They worked perfectly for 8 months.

It's school holidays in South Africa at the moment. The bad economy means that people are not going on holiday, but staying at home. We have seen a massive increase in wifi traffic.

This access point normally has about 20 - 30 people connected to it. Suddenly there are more than 80 people connecting to it. The RB411s started drawing more power than the Meanwell power supply could deliver and the next thing, capacitors start blowing.

After replacing the caps, I replaced the 50W PSU with a 100W PSU. Now all is happy. There are 96 people connected to that AP right now without any issues.
 
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Re: RB750UP questions/suggestions

Sun Dec 18, 2011 12:40 am

Tell me, how much power does a RB435 with 3 x SR-71 draw? When using 24V?

How much does a UBNT Rocket M5 draw? What size power supply get shipped with a UBNT Rocket M5 or M2?[/quote]
Do not know about rb435 but you can find it yourself using a power meter reading amps putting the power meter in series with your rb435, what I know is that ubnt devices wouldn't draw more than 8watt, they all come with 24v 0.5 ah[/quote]

UBNT Rocket comes with 24V 1A PSU.
Datasheet: http://www.ubnt.com/downloads/datasheet ... asheet.pdf

435G - 23.5W without cooling.
Datasheet: http://routerboard.com/pdf/285/rb435g.pdf

Only rocket with gps comes with that adapter,you can allways test the curent draw by yourself and not by taking values from adapters, and you can put relays on poe ports of rb 750up and power cycle even a tv :)) or your wholle house

Are you willing to bet your wages on the fact that a product may work under certain circumstances, but will fail as the load increases?[/quote]
 
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Re: RB750UP questions/suggestions

Sun Dec 18, 2011 1:24 am

use a relay.. mod your RB750up... or use power transistors if you do not like replays.. and you can power up and power cycle a space rocket, or anything that comes up to your mind. nothing is perfect and never will be.. but the rb750up... is usefull as it is for many people.

as you can always ... if you own a car with 100hp.. you can mod is and have 150hp.


do not like rb750up because of only 0.5 ah/port.... buy something else that is usefull to your setup.

rb750up is the first one. be sure that many will come supporting more power draw / port


and you know that you can use a simple rb750... and make POE ports by yourself.. and wit a transistor conected to a led that goes down on router reboot... , you can power cycle the connected devices on your rb
 
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Re: RB750UP questions/suggestions

Mon Dec 19, 2011 4:08 pm

well, RB411 with high power card can be easily fed. it is around 7 to 8 W and with 24V for RB433 with 2 high power cards choose as high as you can get PSU, that RB750UP works and you should be fine with two connected to the router. As Rb433 with 2 R52Hn uses around 14W

Also note that when card works in high rates it uses less power, so cutting down small rates (6Mbps, 9Mbps) can reduce the power consumption of the setup. (That is if clients still can associate with the AP without use of lower rates.

3 high power cards will be too much by any stretch of imagination using around 21W just cards alone. On the other hand board has Fast Ethernet ports (100Mps) why would you connect board with 3 802.11n cards to that anyway.

Oh and if you go with R52n cards, you can power quite a plethora of devices and configuration, just that board has 100Mbit interfaces.
 
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Re: RB750UP questions/suggestions

Thu Dec 22, 2011 1:17 am

Any idea when this will hit US distributors?
 
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Re: RB750UP questions/suggestions

Thu Dec 22, 2011 2:44 am

2.5 amp power supply.
2500 -500 approx. = 2000 mA
2000 / 500 = 4 ports

could the limit be only due to the power supply?
 
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Re: RB750UP questions/suggestions

Thu Dec 22, 2011 2:52 am

Can we use a USB wireless adapter in the USB port and turn this into an AP? Would an atheros based USB adapter work?
 
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Re: RB750UP questions/suggestions

Thu Dec 22, 2011 2:59 am

2.5 amp power supply.
2500 -500 approx. = 2000 mA
2000 / 500 = 4 ports

could the limit be only due to the power supply?
Meanwell make some pretty serious power supplies. A 24V 100W PSU will provide just less than 1A per port.

But what if you use a 150Ah or a 250Ah battery?

Or, if you have an installation like this with a 315Ah battery?
http://forum.mikrotik.com/download/file.php?id=7516

That could provide much more than 2A per port.
 
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Re: RB750UP questions/suggestions

Thu Dec 22, 2011 3:09 am

It only supplies what the device needs, not what the power supply can provide.
 
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Re: RB750UP questions/suggestions

Thu Dec 22, 2011 4:41 am

When will these ship to US distributors?
 
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RB750UP questions/suggestions

Thu Dec 22, 2011 5:21 am

Baltic has them. I have 3 on the way. Titan Wireless has them too
 
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Re: RB750UP questions/suggestions

Fri Dec 23, 2011 5:52 am

You the man! I now have a bunch heading to me from Baltic.

Strange that Streakwave has no ETA.
 
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Re: RB750UP questions/suggestions

Fri Dec 23, 2011 6:01 am

2.5 amp power supply.
2500 -500 approx. = 2000 mA
2000 / 500 = 4 ports

could the limit be only due to the power supply?
It depends if there is a single 2amp power regulator providing power to the ports, or four independant 500ma power regulators providing individual power lines. If you look at the board itself, you should be able to follow the actual traces and see if they all go to the same place, and then see what that regulator is and look up the specs on it.
 
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Re: RB750UP questions/suggestions

Sat Dec 24, 2011 2:45 am

Perhaps there are no regulators......
 
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Re: RB750UP questions/suggestions

Sat Dec 24, 2011 6:15 pm

Perhaps there are no regulators......
There IS a regulator somewhere... even if it is just the main regulator providing power to the entire board. Someone with this board needs to follow the traces of the power pins of the ports and see where it goes... that will help determine the actual power limit.
 
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Re: RB750UP questions/suggestions

Tue Dec 27, 2011 9:07 am

load is measured, when that reaches certain value then power to the port is turned off (overload protection).
 
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Re: RB750UP questions/suggestions

Wed Dec 28, 2011 4:12 am

load is measured, when that reaches certain value then power to the port is turned off (overload protection).
How much current can be used if we use ether1 for powering? I know 2.5A total through the DC power plug but what about using the poe of port 1? Is it the same?

Thanks
 
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Re: RB750UP questions/suggestions

Wed Dec 28, 2011 12:28 pm

hi can any one tell me where to look for power consumption per port? i cannot find it anywhere
Im so small
 
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Re: RB750UP questions/suggestions

Wed Dec 28, 2011 12:36 pm

what do you mean power consumption? depends on what you connect there. max power that can be provided is 500mA. maximum voltage - same as RB750UP input voltage.
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Re: RB750UP questions/suggestions

Wed Dec 28, 2011 5:23 pm

How can we monitor POE status? I saw nothing on winbox or CLI
 
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Re: RB750UP questions/suggestions

Wed Dec 28, 2011 6:18 pm

Will RB750UP have a voltage monitor?
yes! voltage, current and power consumption

so where i can see those values per port? i know that voltage is the same and max power is 500mA but how can i see how much is in curent use per port?
Im so small
 
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Re: RB750UP questions/suggestions

Thu Dec 29, 2011 8:09 am

some of the features have not yet been implemented in RouterOS software.
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Re: RB750UP questions/suggestions

Thu Dec 29, 2011 10:00 am

How can we monitor POE status? I saw nothing on winbox or CLI
only visual status is available at the moment (red LEDs indicating port has PoE on).
 
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Re: RB750UP questions/suggestions

Sat Mar 24, 2012 3:01 pm

Hi,

Is it possible to turn off the red light, so the status of the ethernet conection would be seen
now you can't see if the device has an ethernet conection or not

I'm also interested in current(mA) consumption monitor, when will it be implemented?
 
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Re: RB750UP questions/suggestions

Mon Mar 26, 2012 10:54 am

we are working on the changes so that some features become available.

Unfortunately - it is not currently possible to turn off the led. however newer revisions might have dimmer red LEDs.
 
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Re: RB750UP questions/suggestions

Wed Mar 28, 2012 7:47 am

Are there any plans for a version with more ports?

I love the 750UP. It's a fantastic product. I just find myself using 2 or more of them at most sites which is not as clean as I would like.

RB-2011 with 11 ports with POE out would be the ticket (although I don't need gigE - just more POE ports).
 
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Re: RB750UP questions/suggestions

Fri Apr 06, 2012 12:25 am

Hi,

I have tested RB750UP with powering 2 ubiquiti nanostation an 1 ubiquity rocket with 24V backup power suply (55W Single Output with Battery Charger(UPS Function)
AD-55 series + 2X 12V 12AH leasd battery) only on battery power. After 4h, voltage droped to 21.4V and 1 nanostation (eth2)and 1 rocket (eth3) shut down the power with 1 nanostation (eth5) still working it worked for 2 more hours then I poverd back to 220

Is this some safety feture or what? Why did the RB750UP shut down the POE output?
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Re: RB750UP questions/suggestions

Wed Apr 11, 2012 6:16 am

are you powering the RB750UP via the DC jack or eth port 1?
 
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Re: RB750UP questions/suggestions

Wed Apr 11, 2012 11:36 am

Hi,


Is this some safety feture or what? Why did the RB750UP shut down the POE output?
when voltage drops 500mA limit stays the same, as result power output drops too, if at 24V * 500mA = 12W, then at 20V output is only 10W etc. if that is over the budget then power is turned off.

Also, when there is load, there is small additional power drop, so as result, when one or more devices go off, voltage rises a bit thus enabling it to work further.

Also, if you are powering devices with wireless, then lower data rates use more power then higher ones, so if link goes bad and AP/client has to transmit frames over wireless link at lower data rates, it uses more power.
 
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Re: RB750UP questions/suggestions

Wed Apr 11, 2012 3:23 pm

Ubiquity nanostation and rocket uses 0.1 - 0.15 A, so the 500mA limit is not excided. The most usage I've seen is RB600 with R52H it uses 0.3 A, and it stayed powerd, when the nanostation and rocket lost power.

Also In voltage monitor is aprox. 2V diference from the voltage mesurd with volt meter, when there is 23.6V shown by the volt meter(with the load on), mikrotik RB750IP voltage monitor shows 22V.
Voltage mesured by the volt meter comming from the POE port is 23V.
 
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Re: RB750UP questions/suggestions

Wed Dec 05, 2012 10:42 pm

Hi,

I have tested RB750UP with powering 2 ubiquiti nanostation an 1 ubiquity rocket with 24V backup power suply (55W Single Output with Battery Charger(UPS Function)
AD-55 series + 2X 12V 12AH leasd battery) only on battery power. After 4h, voltage droped to 21.4V and 1 nanostation (eth2)and 1 rocket (eth3) shut down the power with 1 nanostation (eth5) still working it worked for 2 more hours then I poverd back to 220

Is this some safety feture or what? Why did the RB750UP shut down the POE output?
Hi !

I would like to try to buy a 750UP to power up 1 ubiquiti power bridge and 2 Rocket M5.
Do you think that RB750UP will be able to power these 3 devices ?
I will inject 24V on RB750UP max power 60W.

Thanks for the reply.

Regards
Tom
 
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Re: RB750UP questions/suggestions

Thu Sep 26, 2013 5:36 pm

Are there any plans for a version with more ports?

I love the 750UP. It's a fantastic product. I just find myself using 2 or more of them at most sites which is not as clean as I would like.

RB-2011 with 11 ports with POE out would be the ticket (although I don't need gigE - just more POE ports).
+1
We need rb2011LS with poe OUT on ALL ports. Now we use rb2011LS + 8port POE panel
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