Community discussions

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by talo1019
Wed Aug 03, 2011 1:09 pm
Forum: Wireless Networking
Topic: How to find R52Hn card failure?
Replies: 8
Views: 1118

Re: How to find R52Hn card failure?

If it was a Power Amplifier issue.

Yes, one can fix it if you had the part and could solder it back on the board.

Having open antenna, high input power, lightning.....those could all affect the power amplifier.
by talo1019
Wed Aug 03, 2011 9:58 am
Forum: Wireless Networking
Topic: How to find R52Hn card failure?
Replies: 8
Views: 1118

Re: How to find R52Hn card failure?

One possibility is the PA is damaged so the card will get hot.
by talo1019
Mon Aug 01, 2011 6:15 am
Forum: Wireless Networking
Topic: Re-match: XR5 vs F50-Pro
Replies: 2
Views: 943

Re: Re-match: XR5 vs F50-Pro

XR5 does have a higher powered at 28dBm.

Any technical related questions can be e-mailed to support {at} dbii.com
by talo1019
Tue May 24, 2011 6:06 am
Forum: Wireless Networking
Topic: Mikrotik Wireless equipment at a frequency of 6-6.2 GHz
Replies: 8
Views: 2468

Re: Mikrotik Wireless equipment at a frequency of 6-6.2 GHz

Yes it does work, you just need the right wireless card.

6-6.2GHz is licensed in certain countries.

Currently nobody is using this particular frequency in the U.S. as it is more often used in the asian continents
by talo1019
Mon May 16, 2011 5:26 am
Forum: Wireless Networking
Topic: AR9220 chipset (supports spatial diversity?)
Replies: 13
Views: 3317

Re: AR9220 chipset (supports spatial diversity?)

Hi Dallas,
It's part of the 11n standard for chipsets to support spatial diversity & spatial multiplexing.
by talo1019
Mon Apr 25, 2011 11:33 am
Forum: Wireless Networking
Topic: SXT 5HnD + USB 802 b/g/n AR9271
Replies: 14
Views: 4110

Re: SXT 5HnD + USB 802 b/g/n AR9271

Isn't SXT a 5GHz a/n device while your tp-link TL-WN422G is a 2.4GHz b/g/n?

I don't think it has to do w/ the driver. You're AP should be a/b/g/n, that might help solve part of your problems.
by talo1019
Fri Mar 25, 2011 12:07 pm
Forum: Beginner Basics
Topic: Boards losing connectivity
Replies: 5
Views: 669

Re: Boards losing connectivity

hi all i have a high site that is experiencing a strange problem. It has been running now for 3 years and has never had a problem. But within the last few months, the router board i have installed (rb433uah) just stops responding. winbox cannot detect it and we can still see that the ssids are avai...
by talo1019
Wed Mar 23, 2011 8:14 am
Forum: Wireless Networking
Topic: lost connection, not pulled for too long
Replies: 7
Views: 1479

Re: lost connection, not pulled for too long

Hi flamuri,
Can you tell me what range you are using that's experiencing this problem? a/n or b/g/n
by talo1019
Wed Mar 23, 2011 6:32 am
Forum: Wireless Networking
Topic: 802.11n wireless link signal strength issues
Replies: 10
Views: 4874

Re: 802.11n wireless link signal strength issues

May I ask the Rx issues that people are experiencing. Is this only for the 5ghz or 2.4ghz as well?
by talo1019
Fri Oct 08, 2010 12:45 pm
Forum: Wireless Networking
Topic: Dbii F-50 pro help
Replies: 3
Views: 1072

Re: Dbii F-50 pro help

Hi Koeks, Do you happen to have the MAC address and the 4 digit date code? The date code would start off with 09xx or 10xx. We did have some issues with date codes starting with 09xx that was mentioned on our website last year. It had to do with Rx. But on the other hand, we had other customers chan...
by talo1019
Tue Oct 05, 2010 10:46 am
Forum: Wireless Networking
Topic: Help me beat the competitor
Replies: 16
Views: 2447

Re: Help me beat the competitor

What exactly are you looking for?
by talo1019
Tue Aug 31, 2010 1:58 pm
Forum: General
Topic: RB600A rebooting problem, ROS downgrade now no license!??
Replies: 9
Views: 1761

Re: RB600A rebooting problem, ROS downgrade now no license!?

Hi Fragation, Sometimes some customers experience a reboot b/c they're changing the default settings to manual Tx. This causes the card to operate above the power the card was designed for. The RouterOS doesn't properly display our power settings like the XR5. So what you see is not the actualy powe...
by talo1019
Tue Aug 31, 2010 1:53 pm
Forum: Wireless Networking
Topic: Mikrotik R5H
Replies: 10
Views: 1908

Re: Mikrotik R5H

Hi hidagar, We had some issues with our Rx previously, this was part of our recall that we did last year. Although I'm sure there are some that are still out there in the field. Any date code that starts with 09xx for the last 4 digits on the back of the card might experience these throughput and Rx...
by talo1019
Fri Jul 16, 2010 12:44 pm
Forum: RouterBOARD hardware
Topic: b/g 2.4 Radio with good quality?
Replies: 2
Views: 824

Re: b/g 2.4 Radio with good quality?

Alpha AWPCI085A, Dbii F20-PRO, Engenius EMP-8603, Unex CM10-HP are all cards you can try. But you should probably get a card that at least has ESD protection.
by talo1019
Wed Jul 14, 2010 8:16 am
Forum: Wireless Networking
Topic: Mikrotik R5H
Replies: 10
Views: 1908

Re: Mikrotik R5H

No it's not normal. Please send me an e-mail to lawrence{at}dbii{dot}com and I can send you replacements.
Certain cases, based on other postings, nstreme turned off might affect it. I would have to know more details about your configuration to better understand what is going on.
by talo1019
Wed Jul 07, 2010 11:24 am
Forum: Wireless Networking
Topic: Mikrotik R5H
Replies: 10
Views: 1908

Re: Mikrotik R5H

All the Rx for most of the cards now are near -97. Remember the engenius card also has an offset, if you change the power levels outside of default you will be over driving the cards and might damage them. R5H and XR5 show the true powers.
by talo1019
Tue Jul 06, 2010 2:14 pm
Forum: Wireless Networking
Topic: realtek compatibility
Replies: 3
Views: 693

Re: realtek compatibility

Yes, Realtek tends to be a cheaper chipset and most outdoor wireless systems are specifically designed for Atheros chipsets. Unless more providers (software developers and companies) write drivers for Realtek, you're not going to see much support.
by talo1019
Tue Jul 06, 2010 2:02 pm
Forum: Wireless Networking
Topic: R52H Failure
Replies: 15
Views: 1979

Re: R52H Failure

Recommend some type of protection for ESD. Either through ethernet or RF side.

btw colebert, what makes SR-71 the champ? Can you be a little more specific? I'm curious.
by talo1019
Tue Jul 06, 2010 1:58 pm
Forum: Wireless Networking
Topic: Mikrotik R5H
Replies: 10
Views: 1908

Re: Mikrotik R5H

UBNT XR5, Alpha AWPCI085A, Dbii F50-PRO, Engenius EMP-8603, Unex CM10-HP are all cards you can try to see if it fits your needs.
by talo1019
Mon Mar 15, 2010 10:57 am
Forum: Wireless Networking
Topic: XR5 or Doodle labs DB-F50-PRO
Replies: 3
Views: 2023

Re: XR5 or Doodle labs DB-F50-PRO

Please write me an e-mail and I will send you some samples.
by talo1019
Thu Mar 11, 2010 8:05 am
Forum: General
Topic: Sample Installations - Sticky Please
Replies: 230
Views: 136706

Re: Sample Installations - Sticky Please

Good to hear.

Was having a discussion with my boss as to what you actually meant. He thought you meant that something was going on when you grounded it.

Thanks for clearing that up.
by talo1019
Thu Mar 11, 2010 5:44 am
Forum: General
Topic: Sample Installations - Sticky Please
Replies: 230
Views: 136706

Re: Sample Installations - Sticky Please

Dbii boards are very sensitive to earthing issues. This is the F20 2.4GHz unit. Here you can see the Dbii board is earthed to the RB411, which is in turn earthed to the radio antenna. The radio antenna is then earthed to a copper water pipe via an earth strap. IMG_1316 (Medium).JPG IMG_1317 (Medium...
by talo1019
Mon Mar 01, 2010 9:00 am
Forum: Wireless Networking
Topic: Trying to Connect 2 links 3.86km but LOW CCQ
Replies: 6
Views: 1243

Re: Trying to Connect 2 links 3.86km but LOW CCQ

Try step by step to isolate the problem:
Upgrade your Router OS to 3.3.
Try G band only, if that doesn't improve then,
Then try A 5GHz band only, if that doesn't improve then,
Try a different radio card, if that doesn't improve then,
Lastly try a different routerboard version
by talo1019
Mon Mar 01, 2010 8:47 am
Forum: Wireless Networking
Topic: Too frequent problems with R52n (asymetric signal levels)
Replies: 3
Views: 796

Re: Too frequent problems with R52n (asymetric signal levels)

The blowing up can be reduced by using the right steps such as plugging in the antenna and powering on. We originally had a problem with this beginning of last year 09 and have and fixed it. But if the engineers that designed the cards for Mikrotik don't solve it, then it just keeps happening and th...
by talo1019
Mon Mar 01, 2010 5:18 am
Forum: Wireless Networking
Topic: XR3 / RB411 compatability problem.
Replies: 10
Views: 1759

Re: XR3 / RB411 compatability problem.

Hi Dallas, Yes we are looking into it. But there are many players already and the problem w/ "already built" is that they lock you into the device and you can't really customize and/or replace parts. These are probably small issues anyway and it just boils down to juggling price & quality at some po...
by talo1019
Sun Feb 28, 2010 8:26 am
Forum: Wireless Networking
Topic: XR3 / RB411 compatability problem.
Replies: 10
Views: 1759

Re: XR3 / RB411 compatability problem.

Hi Dallas, As I mentioned to you earlier via e-mail, I thought I would share this too. Besides the power of the higher powered cards, they are also very sensitive. While some cards are able to withstand a higher voltage without damaging the cards, it's easier to damage the 3GHz cards. This is why I ...
by talo1019
Fri Feb 26, 2010 11:51 am
Forum: Wireless Networking
Topic: XR3 / RB411 compatability problem.
Replies: 10
Views: 1759

Re: XR3 / RB411 compatability problem.

Do you know of any other brands that does the 3GHz? I only know of XR3 and our F36. I would like to do a comparison with other brands since we're only comparing w/ the XR3 and I don't find it a fair comparison unless there is at least another one.
by talo1019
Sat Feb 06, 2010 7:48 pm
Forum: General
Topic: Engenius 802.11AGB EMP-8603 with RBs work?
Replies: 15
Views: 2414

Re: Engenius 802.11AGB EMP-8603 with RBs work?

eddieada may I asked what type of performance you are seeing? CCQ, ping times...etc (as reference) The external power connection does have some uses I admit. Is there a reason why you chose this card versus others? Was it the price/performance, or would performance/price be not as important? The onl...
by talo1019
Wed Feb 03, 2010 1:08 pm
Forum: Wireless Networking
Topic: 1x1 Mimo R-52N VS R-52
Replies: 7
Views: 2053

Re: 1x1 Mimo R-52N VS R-52

The only downside of running an 802.11n card is that it will require ROS 4.x to be recognized. Since I use nstream on all of my backhauls, I am not sure that I would be happy running an OS that still appears to have nstream problems. If you downgrade to ROS 3.30, your R52n will not be recognized. S...
by talo1019
Wed Feb 03, 2010 12:49 pm
Forum: Wireless Networking
Topic: rb433ah interference between mpci cards
Replies: 75
Views: 18315

Re: rb433ah interference between mpci cards

Yeah, we bought 2 of the MPCI-FLEX from http://www.adexelec.com as well, and then realized that they overcharged us when it's almost half the price here in Taiwan :P. I admit, it's not the easiest thing to find, probably why adexelec charges so much. In any case, the MPCI-FLEX type extender is conve...
by talo1019
Mon Feb 01, 2010 6:21 am
Forum: Wireless Networking
Topic: Wireless Link with iphone WiCalc
Replies: 3
Views: 684

Re: Wireless Link with iphone WiCalc

What are your ping times & CCQ like?
by talo1019
Sat Jan 30, 2010 7:16 am
Forum: Wireless Networking
Topic: rb433ah interference between mpci cards
Replies: 75
Views: 18315

Re: rb433ah interference between mpci cards

Yes, I stand corrected. I probably shouldn't have described it in that fashion. Obviously, 400mW at 26dBm to 800dBm 27dBm is double based on mW. Yes, it's logarithmic in terms of actual power. I was thinking and describing in a more linear fashion for easier understanding, but...I shouldn't and I'll...
by talo1019
Fri Jan 29, 2010 12:26 pm
Forum: Wireless Networking
Topic: rb433ah interference between mpci cards
Replies: 75
Views: 18315

Re: rb433ah interference between mpci cards

I think everyone makes some valid points especially nest & valnet. Also someone is using a R52 and 1000mW kingston, very interesting. The point is with 2 Hi-Power card such as XR5, Kingston, F50-PRO stacked on top of each other, you will get inteference. The best analogy I could think of is putting ...
by talo1019
Fri Jan 29, 2010 6:17 am
Forum: Wireless Networking
Topic: Unstalbe AP/clients
Replies: 3
Views: 2919

Re: Unstalbe AP/clients

Try a different frequency.

Might be more useful if you tell us what antenna, board, miniPCI, CPE, how many cards in the board you are using. All this information is more useful in trying to figure out what exactly the problem lies.

Yes, decreasing Tx should help.
by talo1019
Thu Jan 28, 2010 9:33 am
Forum: Wireless Networking
Topic: [nfo] What's Sicurity Wireless impact on perfomances?
Replies: 4
Views: 806

Re: [nfo] What's Sicurity Wireless impact on perfomances?

Yes, Normis you are right about encryption on the hardware level. But I think what magnavox was referring to in terms of performance impact is when you click on a link, there are very small delays (referring more to the total transmission time of what you visually see versus the actual data being tr...
by talo1019
Thu Jan 28, 2010 8:57 am
Forum: Wireless Networking
Topic: 1x1 Mimo R-52N VS R-52
Replies: 7
Views: 2053

Re: 1x1 Mimo R-52N VS R-52

Based on what you mentioned, I would probably use the R52H instead of R52N b/c of the inherent issues with N. There are definitely advantages for sure. But as you can see on the forums, there are still many issues with N and it's just not yet ready for a backhaul in my opinion (backhauls should be v...
by talo1019
Thu Jan 28, 2010 8:49 am
Forum: RouterBOARD hardware
Topic: R5H problems
Replies: 72
Views: 17318

Re: R5H problems

There are some card models that are more robust than others based on our tests (I have to mention that we only have maximum 2 of each card of other vendors so it's not completely accurate sampling error rate). Some components used are just more sensitive to changes. Some of it is design, some of it ...
by talo1019
Thu Jan 28, 2010 5:54 am
Forum: Wireless Networking
Topic: strange network speed isssue .
Replies: 1
Views: 360

Re: strange network speed isssue .

If you try to reset the RB, and use default settings and still experience the same issues, then try another RB to see if you experience the same issue. If so, I would suggest you to try other cards and see if there are changes. Trying 2-3 different cards might help in determining what card works for...
by talo1019
Wed Jan 27, 2010 2:49 pm
Forum: Wireless Networking
Topic: Dbii Networks F50
Replies: 8
Views: 1621

Re: Dbii Networks F50

They work great with Mikrotik. However with the Gateworks 2347 and Ikarus using 18V POE they reboot 5 and 6 times a day. Of course Ikarus support is non existent. Needless to say we don't use them anymore. I still have about 100 of them in the network. As they fail or get struck by lightning we rep...
by talo1019
Wed Jan 27, 2010 12:48 pm
Forum: Wireless Networking
Topic: [nfo] What's Sicurity Wireless impact on perfomances?
Replies: 4
Views: 806

Re: [nfo] What's Sicurity Wireless impact on perfomances?

I think this article does an ok job at simply summing up how encryption impacts performance (5-30% if you don't want to click): http://www.speedguide.net/faq_in_q.php?category=91&qid=156 Note there is a comment by Philip that says: "Encrypting data adds some processor load as well. However, not secu...
by talo1019
Wed Jan 27, 2010 12:35 pm
Forum: Wireless Networking
Topic: High latency in wireless network
Replies: 2
Views: 1142

Re: High latency in wireless network

This question is very broad and many factors can cause latency such as quality of equipment from the client to the AP (cheap antenna, cheap CPE...etc), AP to the internet (cheap miniPCI....etc). Obviously there might be other equipment in-between the AP to the internet. I think in your case you are ...
by talo1019
Wed Jan 27, 2010 4:33 am
Forum: Wireless Networking
Topic: Surge protection?
Replies: 9
Views: 2331

Re: Surge protection?

Thanks for your support, but performance is the ultimate concern. As you experience issues we will address them. Sometimes I don't have all the answers but I will find out for you immediately. As I mentioned about performance, you might notice that our spec sheet might indicate a certain number but ...
by talo1019
Tue Jan 26, 2010 12:42 pm
Forum: The Dude
Topic: Spectrum Analyzer tool?
Replies: 2
Views: 1439

Re: Spectrum Analyzer tool?

It can be used anywhere
by talo1019
Tue Jan 26, 2010 12:18 pm
Forum: Wireless Networking
Topic: RB600A Reboots as soon as I run traffic through it
Replies: 13
Views: 2880

Re: RB600A Reboots as soon as I run traffic through it

One more thing I wanted to mention from another longtime user of Mikrotik.
Mikrotik boards come shipped with watchdog timer enable set at 5min intervals, disabling watchdog should help as well regarding the reboots :)
by talo1019
Tue Jan 26, 2010 10:46 am
Forum: Wireless Networking
Topic: Using R5H for base station, TX power, CCQ
Replies: 3
Views: 787

Re: Using R5H for base station, TX power, CCQ

Like aaa mentioned as well as lowering the data rate might help as well.
by talo1019
Tue Jan 26, 2010 9:38 am
Forum: Wireless Networking
Topic: Dbii Networks F50
Replies: 8
Views: 1621

Re: Dbii Networks F50

Thanks for the comment. I'm glad you liked it...we try hard to make sure the quality is good.

If you need anything just give me a holler.
by talo1019
Tue Jan 26, 2010 9:32 am
Forum: Wireless Networking
Topic: RB600A Reboots as soon as I run traffic through it
Replies: 13
Views: 2880

Re: RB600A Reboots as soon as I run traffic through it

If you set the settings to default , this is the maximum the card can support for the F50/F50-PRO: 6-24Mbps = 19dBm 36Mbps = 17dBm 48Mbps = 14dBm 54Mbps = 13dBm Because of offset, your actual output is: 6-24Mbps = 19dBm + 8 = 27dBm 36Mbps = 17dBm + 8 = 25dBm 48Mbps = 14dBm + 8 = 22dBm 54Mbps = 13dBm...
by talo1019
Tue Jan 26, 2010 6:27 am
Forum: Wireless Networking
Topic: Dbii Networks F50
Replies: 8
Views: 1621

Re: Dbii Networks F50

You shouldn't experience any issues. The only issue would that a small portion of the F20's and F50's shipped between May 2009 and Aug 2009 are exhibiting transmitter signal degradation at low temperatures (below -10C). This problem will degrade the link quality and cause uncertain latency and throu...
by talo1019
Tue Jan 26, 2010 4:04 am
Forum: General
Topic: Engenius 802.11AGB EMP-8603 with RBs work?
Replies: 15
Views: 2414

Re: Engenius 802.11AGB EMP-8603 with RBs work?

My name is Lawrence from Dbii Networks and there always many questions regarding "Real power" for certain cards such as XR5, 8603, F50-PRO. I recommend this website if you have any questions on understanding what is happening: http://www.wifi-stock.com/file/ubi_mtik_power.pdf If you really wanted to...
by talo1019
Tue Jan 26, 2010 3:36 am
Forum: Wireless Networking
Topic: Surge protection?
Replies: 9
Views: 2331

Re: Surge protection?

Hi Popcorrin & everyone else, My name is Lawrence from Dbii Networks. I just recently started posting to the forums (I know I should've come on sooner). In any case, I understand about packet loss and latency concerns you might have regarding adding the SafeSurge. I can tell you the reason why we de...
by talo1019
Mon Jan 25, 2010 5:00 pm
Forum: Wireless Networking
Topic: RB600A Reboots as soon as I run traffic through it
Replies: 13
Views: 2880

Re: RB600A Reboots as soon as I run traffic through it

If you have any issues with the cards, you just have to ask the distributors who sold it to you for a free immediate replacement (of course, you can't physically break the card or burn it..etc...you get the idea) If they don't have it, I will send one to you. This is a benefit to you that I don't kn...
by talo1019
Mon Jan 25, 2010 10:29 am
Forum: Wireless Networking
Topic: RB600A Reboots as soon as I run traffic through it
Replies: 13
Views: 2880

Re: RB600A Reboots as soon as I run traffic through it

My apologies for not writing sooner. I just took the initiative to get on here even though I'm usually in contact w/ the distributors more. But this might actually be even more beneficial :)
by talo1019
Sun Jan 24, 2010 7:02 am
Forum: Wireless Networking
Topic: RB600A Reboots as soon as I run traffic through it
Replies: 13
Views: 2880

Re: RB600A Reboots as soon as I run traffic through it

My name is Lawrence from Dbii Networks. I read that some of you had issues regarding reboot. I would like to add one other thing which is that the Mikrotok router OS doesn't implement the correction offset so when you set it to default settings, 19dbm, you're actually transmitting at 27dbm. If you c...