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MikroTik App

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by dbostrom
Sat Sep 05, 2009 9:24 am
Forum: Wireless Networking
Topic: 3.28 - wireless stop working after a couple of days
Replies: 4
Views: 1037

Re: 3.28 - wireless stop working after a couple of days

Talking to myself! :D

Supout captured. I'll send it along.
by dbostrom
Sat Sep 05, 2009 7:28 am
Forum: Wireless Networking
Topic: 3.28 - wireless stop working after a couple of days
Replies: 4
Views: 1037

Re: 3.28 - wireless stop working after a couple of days

So it turns out we have several boxes behaving this way. These are mostly RB112 serving as little leaf nodes and dishing out 900mHz access to connections numbering from 3 to 10 clients. I've attempted to add supout generation to the script serving as a hack solution for this and which monitors for l...
by dbostrom
Wed Sep 02, 2009 2:15 am
Forum: Wireless Networking
Topic: 3.28 - wireless stop working after a couple of days
Replies: 4
Views: 1037

Re: 3.28 - wireless stop working after a couple of days

For what it's worth we had another "event" today. This time I'd scripted the AP box to take a look at what was going on and report in prior to rebooting. Basic deafness; wlan interface apparently stopped hearing anything, midstream. I'm going to put the same script on another box or two and see if i...
by dbostrom
Mon Aug 31, 2009 9:05 pm
Forum: RouterBOARD hardware
Topic: RB411AH end-of-life, replacement plans?
Replies: 5
Views: 1516

Re: RB411AH end-of-life, replacement plans?

Thank you, SurferTim!
by dbostrom
Mon Aug 31, 2009 8:30 pm
Forum: RouterBOARD hardware
Topic: RB411AH end-of-life, replacement plans?
Replies: 5
Views: 1516

Re: RB411AH end-of-life, replacement plans?

If there are other RouterBoards that measure and can report the input voltage I'd love to know the model numbers. Bear in mind, what's useful for PV monitoring isn't the regulated voltage report such as what's available on the RB230 but instead the input voltage arriving at the barrel jack or POE. (...
by dbostrom
Mon Aug 31, 2009 6:37 am
Forum: RouterBOARD hardware
Topic: RB411AH end-of-life, replacement plans?
Replies: 5
Views: 1516

RB411AH end-of-life, replacement plans?

While looking for some other information I just read that the RB411AH allows operators to monitor the -input- voltage to the board. This is an enormously useful feature for those of us running remote gear on PV or other off-grid systems. Does MT plan on producing the RB411AH for long? Equipping any ...
by dbostrom
Wed Aug 26, 2009 4:57 am
Forum: Wireless Networking
Topic: missing 'compression' in RB 433?
Replies: 3
Views: 1458

Re: missing 'compression' in RB 433?

Hey, we just had to press an RB433 board into service for backhaul and after wasting some considerable time fussing around w/trying to get compression going I found this post. Any chance you guys can turn compression back on for RB433 boards on the next 3.x build? I don't think anybody's changing th...
by dbostrom
Tue Aug 25, 2009 11:26 pm
Forum: Wireless Networking
Topic: 3.28 - wireless stop working after a couple of days
Replies: 4
Views: 1037

Re: 3.28 - wireless stop working after a couple of days

We have one RB112 box serving as an AP doing backhaul duty for two lightly populated sites (max ~1.5mbps tx) recently upgraded to 3.28 and showing somewhat similar symptoms. What we've seen is that one or another of the two AP cards (SR5) shows no associations, scans show no results despite known vi...
by dbostrom
Wed Aug 19, 2009 5:19 am
Forum: Wireless Networking
Topic: Alternative to 900 MHz sectors
Replies: 13
Views: 2515

Re: Alternative to 900 MHz sectors

Superpass makes some nice horizontal 900mHz sectors for 300-400USD, price depending on pattern width and depth. We've got a lot of them deployed and have been very happy. H/V separation is good. The mounting arrangement is not as nice as we'd like (no scissors) but it's fairly easy to work around th...
by dbostrom
Fri Jan 16, 2009 3:19 am
Forum: Wireless Networking
Topic: DHCP Relay Issue with Pseudo-bridge
Replies: 4
Views: 2296

Re: DHCP Relay Issue with Pseudo-bridge

MKT CPE does not pickup the request as it is not addressed to its MAC address of the antenna. As such, the router never gets the offered IP address. If you're using the typical ISC dhcp server, set "always-broadcast true" for the address class you're having trouble with, in dhcpd.conf. The response...
by dbostrom
Fri May 25, 2007 7:22 pm
Forum: Wireless Networking
Topic: Problems with SR9
Replies: 19
Views: 3923

Re: Re:

I understand that the horizontal ones are better, just can't figure out why they cost 2-4x as much ... is it super high grade gold inside or something? Does the mfg process take twice as much time ? To me it seems like an artificial markup of price because they perform better. One possible reason i...
by dbostrom
Fri May 25, 2007 7:03 am
Forum: Wireless Networking
Topic: Problems with SR9
Replies: 19
Views: 3923

why are the horizontal sectors 2-4x the price of a vertical sector ? Are they that much harder to make ? Is it worth the price difference ? Less energy going into earth and space, more goes toward horizon. But ghmorris makes an excellent suggestion; if you can't spare US $400-$900 for an "official"...
by dbostrom
Wed May 23, 2007 5:44 pm
Forum: General
Topic: when new beta? When wireless QoS?
Replies: 29
Views: 7590

WMM is sort of pointless without any attack on the hidden node problem. Hopefully we'll soon see a partial (RTS, what 802.11 specifies, other than the sadly, universally unimplemented 802.11 PCF) solution pop up in an upcoming beta. Even if RTS/CTS is not a perfect solution, it's a big help...
by dbostrom
Mon May 21, 2007 9:48 pm
Forum: General
Topic: RouterOS 2.9.43 Released
Replies: 24
Views: 3653

the older RB230 has a BIOS battery - personally, I'm glad it's gone... less maintenance to worry about --- ha....yes i hope Mikrotik isn't redesigns with battery, i will confuse to planning replace them. we has min 40 meters high for towers. :roll: regards Hasbullah.com --- I've been concerned abou...
by dbostrom
Tue May 15, 2007 7:35 pm
Forum: General
Topic: RouterOS 2.9.43 Released
Replies: 24
Views: 3653

there is a reason we are making a new version ... v3 has new wireless module.
Then I'll think good thoughts about a swift march for v3 up to and through the Victory Arch of Production Stability.

:D
by dbostrom
Tue May 15, 2007 8:04 am
Forum: General
Topic: RouterOS 2.9.43 Released
Replies: 24
Views: 3653

Speaking of updates, it seems there really is an improvement in wireless performance w/the 3.06 and later beta software (either that or a bunch of favorable coincidences in our testing). Any chance this will appear in the 2.9.x series? If beta for 3.x is anticipated to go on for a long time it would...
by dbostrom
Fri May 11, 2007 5:01 am
Forum: Wireless Networking
Topic: 900mhz AP recieve is down 10 to 15db on recieve only
Replies: 25
Views: 3150


snip

SR9's work fine as long as you reboot the system once or twice an hour. they cannot handle thier own noise(this was tested in lab).

snip
Something wrong w/your lab, maybe. We've got oodles of SR9 showing multi-day or multi-week uptime.
by dbostrom
Thu May 10, 2007 5:04 pm
Forum: Wireless Networking
Topic: 900mhz AP recieve is down 10 to 15db on recieve only
Replies: 25
Views: 3150

We did move around and try different channels, the noise floor was in the 90's, we go the same results on higher channels where the noise floor was in the -80 to -70. Besides with a signal of -64 you should be able to get through the noise i would think. Erik Check to see if noise floor is similar ...
by dbostrom
Thu May 10, 2007 6:29 am
Forum: Wireless Networking
Topic: 900mhz AP recieve is down 10 to 15db on recieve only
Replies: 25
Views: 3150

We've seen this issue when the AP (in relatively advantageous position w/wide aperture antenna) can see interference but CPE cannot. Generally CPE is looking through a relatively narrow aperture antenna and is not as exposed to whatever signals may be causing interference, thus less affected by inte...
by dbostrom
Thu May 10, 2007 6:22 am
Forum: General
Topic: T1.IAS & LAES(Calea) Support Mandatory in USA
Replies: 46
Views: 9587

ok so after reading the latest released FCC ruling on wireless, i came across this: 47. Nor does our interpretation of section 332 of the Communications Act and its implementing regulations here alter either our decision in the CALEA proceeding to apply CALEA obligations to all wireless broadband I...
by dbostrom
Thu May 10, 2007 6:16 am
Forum: General
Topic: Small request: Move System Reboot away from System Shutdown
Replies: 13
Views: 3954

I suppose I should try this to find out, but if the hardware watchdog is enabled presumably it would reboot the system if the OS stopped updating the watchdog?
by dbostrom
Tue May 08, 2007 9:33 pm
Forum: Wireless Networking
Topic: 900 mhz cellular network within 10 m - interference 2.4-5.8?
Replies: 9
Views: 1789

I am concerned, however, as my cell phone has done some odd things since testing the SR9 with the antenna in my office. We were out testing 900 access the the other day, w/2 GPS receivers on the dash of the car. Both GPS lost lock within a few seconds of each other, began displaying error messages....
by dbostrom
Fri Apr 20, 2007 3:48 am
Forum: Wireless Networking
Topic: Mikrotik VS Trango battle.
Replies: 28
Views: 7900

Can a cm9 ore sr5 be set to continous transmitt?
There's always "align" mode. Good for alignment, testing power supplies, heating cans of beans, whatever... :D
by dbostrom
Wed Apr 18, 2007 5:17 pm
Forum: Wireless Networking
Topic: Mikrotik VS Trango battle.
Replies: 28
Views: 7900

It costs more but I think outdoor wireless systems should be built with more APs and higher gain small beam antennas and run the smaller 5 and 10mhz bandwidth. Similar experience to Jober's, same conclusions. ISM in the U.S. is the "wild west". Louder won't help, but smarts will. We've had very pos...
by dbostrom
Wed Apr 04, 2007 4:32 pm
Forum: Wireless Networking
Topic: connnectors crash by water condensation
Replies: 2
Views: 881

Re: connnectors crash by water condensation

Hi everyone, We are having such an annoying problem since a coupple of months ago. Especially it comes up in rainy regions when using outdoor boxes and routerBoard 532: enviroment humidity comes in through condensation holes, it becomes water that rustes connectors and make them unusefull. Support ...
by dbostrom
Thu Mar 22, 2007 10:55 pm
Forum: General
Topic: Client-pseudobridge w/DHCP host
Replies: 1
Views: 1358

Client-pseudobridge w/DHCP host

We're experimenting w/ the handy new client-pseudobridge option and have found a little mystery. Clients attempting to obtain DHCP addresses from the ISC DHCP server don't seem to be able to properly complete the transaction. Oddly enough, experiments using the (unknown provenance) DHCP server inclu...
by dbostrom
Thu Mar 22, 2007 4:07 am
Forum: General
Topic: OT: UPS problems
Replies: 4
Views: 1222

Many of the smaller, cheaper APC UPS units have the same basic issue. Once the battery runs flat, the unit requires manual intervention to switch back on. We've also found the reliability of the low-end APC units to be less than stellar. In fact, our last one in the field we replaced just 2 weeks ag...
by dbostrom
Sun Feb 25, 2007 8:01 am
Forum: Wireless Networking
Topic: set SSID broadcast interval
Replies: 1
Views: 1883

Re: set SSID broadcast interval

Does anyone know how or if you can set the intveral of which RouteOS broadcasts the ssid of the Access point? In Heaven (or perhaps Hell), ROS will have an "expert mode" (attainable by clicking through a vast disclaimer disavowing all responsibility for technical support) allowing users to access u...
by dbostrom
Thu Feb 22, 2007 4:38 pm
Forum: Wireless Networking
Topic: signal strength advise
Replies: 10
Views: 2025

RX is on the low side. A 15dBi omni is going to have a pretty thin vertical pattern. Meanwhile clients are very close to AP and low compared to AP antenna, thus outside the AP antenna's pattern. If you don't anticipate connecting clients much farther away, you might want to go w/a lower gain AP ante...
by dbostrom
Wed Feb 21, 2007 7:05 pm
Forum: Wireless Networking
Topic: signal strength advise
Replies: 10
Views: 2025

Re: signal strength advise

Hi All, I have connected to clients from my base station. I am using nstream feature. I have a 15dbi antenna with an outdoor access point and the client is using 18dbi CPE. I get signals of btw -71 and -75 for the two clients. is this good or bad? You've not supplied enough data to make an informed...
by dbostrom
Wed Feb 21, 2007 6:54 pm
Forum: General
Topic: Reboot - Tempature Issue
Replies: 27
Views: 6341

This particular rb532 has three of the Senao cards which have been installed and in operation for two years. The unit only reboots in winter, around 32 Degress and at night time between 11pm and 7am. It almost always reboot around 10:45, then be ok untill 11:15 then reboot again. and then randomly ...
by dbostrom
Wed Feb 21, 2007 5:35 am
Forum: Wireless Networking
Topic: need help configuring 532A+sr2
Replies: 3
Views: 951

Re: need help configuring 532A+sr2

Correct antenna port? U.FL=Antenna A, MMCX=Antenna B. (IE, insanely tiny connector is port A, larger connector is port B)
by dbostrom
Tue Feb 20, 2007 5:51 pm
Forum: Wireless Networking
Topic: Ubiquiti 600 mw card out for 2 and 5 Ghz
Replies: 59
Views: 13943

Hi Mike, Apart from the increase in power why should we buy the 600mW card as against your 400mW cards...This is a simple question, please answer it and do not refer use to the datasheet... Translation: Please answer the question but do not refer to any facts, figures or specifications. A difficult...
by dbostrom
Mon Feb 19, 2007 4:42 pm
Forum: Wireless Networking
Topic: Card antenna problem???
Replies: 4
Views: 1303

Other tips:

A) Use omnis w/DC grounded radiators.

B) Stop using cards w/diversity switches.
by dbostrom
Sat Feb 17, 2007 7:53 pm
Forum: RouterBOARD hardware
Topic: 532A power up
Replies: 2
Views: 1731

Settings are in manual here: http://www.routerboard.com/pdf/rb500ugM.pdf If you're lucky, the board is not blown out: "To use standard PoE power option on this interface, JP3 and JP4 must be switched to the 1-2 position and JP5 and JP6 must be switched to the 2-3 position. The PoE input can also be ...
by dbostrom
Sat Feb 17, 2007 4:12 am
Forum: General
Topic: 153 Routerboard
Replies: 59
Views: 9826

it's a hardware fix, you can't apply it remotely Details please! I'm a trainer also and my isps asked me about it. What is it about? We're not affected by this issue even though we have some RB153 units deployed, but this discussion thread makes me worry about further deployments. I'm sure it would...
by dbostrom
Fri Feb 16, 2007 7:00 pm
Forum: Wireless Networking
Topic: 3 Mini-PCI board, Not rb153
Replies: 16
Views: 3389

dbstrom: where do you get the hammond boxes? i did a good serach and could not find anything. Mouser's got quite a few. Search on "Hammond" then use the filter for "NEMA 4X" Here's a link to get started with: http://www.mouser.com/search/ProductDetail.aspx?R=PJ864Hvirtualkey54600000virtualkey546-PJ...
by dbostrom
Fri Feb 16, 2007 5:26 pm
Forum: Wireless Networking
Topic: 3 Mini-PCI board, Not rb153
Replies: 16
Views: 3389

Re: 3 Mini-PCI board, Not rb153

Or is anyone using a RB 532 with a daughtercard in an outdoor enclosure? thanks We've got several going, a couple for more than a year. Completely stable running 2xSR5 and 2xCM9 (yes, if the SR5 cards are run lower than 36mbps rate and no adjustment is made to output power it puts 3.3v in the red b...
by dbostrom
Fri Feb 16, 2007 3:00 am
Forum: RouterBOARD hardware
Topic: New Routerboards?
Replies: 71
Views: 18704

why couldn't you write it down here? Is it a secret that none of ther routers have a stronger cpu than 170Mhz? Yes I argree it is sad - but true. Ahem. Actually, MT has the 400mhz 532 board, which being a RISC CPU actually does a bit better than the CISC (confused instruction set calculator) equiva...
by dbostrom
Thu Feb 15, 2007 4:07 am
Forum: Wireless Networking
Topic: Linking two 5GHz cards on one track with dual pol. anntena
Replies: 14
Views: 3161

Re: Linking two 5GHz cards on one track with dual pol. annte

Hi guys, I'm having a nightmare when trying to use two cards in one direction... Any ideas or suggestions are welcome. I am eagerly awaiting your comments on the case Anything nearby or possibly deformation of dish/feed that might be upsetting the polarization? Also what BurstNet says is definitely...
by dbostrom
Thu Feb 15, 2007 3:55 am
Forum: Wireless Networking
Topic: Ubiquiti 600 mw card out for 2 and 5 Ghz
Replies: 59
Views: 13943

Yeah, I saw that. But I still have the same questions, and it would be great if you could sum it up: What is the advantage of the XR2 vs an SR2 on 802.11b, or 802.11g? The receive specs are the same? If so...is it just the 600mw vs 400mw (about 1.5db I'd guess). How about: -- No diversity switch to...
by dbostrom
Wed Feb 14, 2007 4:22 pm
Forum: Wireless Networking
Topic: Remote solar powered AP - UPS suggestions?
Replies: 18
Views: 3724

Regarding the usage for having a low-voltage warning for your solar panels you could do something without the need for an external machine connecting to a RS232-enabled charge controller. If you can find a device (or do it yourself using a small microcontroller - that's not too hard ;) ) that can t...
by dbostrom
Wed Feb 14, 2007 12:07 am
Forum: Wireless Networking
Topic: Remote solar powered AP - UPS suggestions?
Replies: 18
Views: 3724

It's not documented in the PDF I have, but if you open a terminal window to your AP, look at the "special-logon" command. Basically you create a special user on the AP that links a telnet session directly to a serial port.
That is extremely cool. :D

Rushing away to try it...
by dbostrom
Tue Feb 13, 2007 11:29 pm
Forum: Wireless Networking
Topic: Remote solar powered AP - UPS suggestions?
Replies: 18
Views: 3724

Then use the serial passthrough feature to remotely access the MT's serial port and talk directly to the controller.
Serial passthrough? That sounds most interesting, can't find it in docs. v3?
by dbostrom
Mon Feb 12, 2007 4:11 pm
Forum: General
Topic: Variables including hyphens in v3: how to handle?
Replies: 2
Views: 1357

Could have --sworn-- I tried that!

Thanks!
by dbostrom
Mon Feb 12, 2007 2:47 pm
Forum: RouterBOARD hardware
Topic: SR2 and SR9 don't work together well.
Replies: 8
Views: 2322

I had the same issue. RB532 with SR9 and SR2. SR2 wouldn't work worth anything until I pulled the SR9. I had the SR9 completely disabled.
Sounds like something that should be called to UBNT's attention. Oscillation in SR9, maybe?
by dbostrom
Sun Feb 11, 2007 9:15 pm
Forum: General
Topic: Variables including hyphens in v3: how to handle?
Replies: 2
Views: 1357

Variables including hyphens in v3: how to handle?

Certain variables produced by ROS (such as "signal-strength" output from wlan monitor command) include hyphens. The v3 scripting language does not appear to handle variable names that include hyphens, thus it's impossible to use these system-generated variables in scripts. Does this reflect a change...
by dbostrom
Fri Feb 09, 2007 2:37 am
Forum: Wireless Networking
Topic: Xtreme Ubiquiti Range 2/3/5
Replies: 8
Views: 2512

An important question, what's the current draw on the PCI bus, and therefore which boards/solutions they will will work with. Anyone who gets one to try, please do post results - Regards CableFree Solutions Another nice thing about these is that they're massively characterized in the datasheets. Cu...
by dbostrom
Thu Feb 08, 2007 11:08 pm
Forum: Wireless Networking
Topic: Xtreme Ubiquiti Range 2/3/5
Replies: 8
Views: 2512

Excellent ESD protection, better rejection, industrial temperature rating, enough power that the card can be massively derated, no often-useless and fragile diversity switch, etc. A complete retake on what's needed for 802.11 applications demanding reliability. After years depending on luck to run n...
by dbostrom
Thu Feb 08, 2007 4:17 pm
Forum: Wireless Networking
Topic: sr9 and client distance
Replies: 26
Views: 3991

We're fairly busy right now circling back and installing customers who did not want the expense or eyesore of a telescoping pole or truss for 2400mhz installations. Vegetation is a major problem for us but the 900 gear seems to be doing the trick so far. If there's a challenge here, it's confining r...
by dbostrom
Thu Feb 08, 2007 2:06 am
Forum: RouterBOARD hardware
Topic: SR2 and SR9 don't work together well.
Replies: 8
Views: 2322

We've got several installations w/the same combination of cards, two of 'em on RB153 and we don't see this. I wonder if it depends on the combination of channels in use?
by dbostrom
Thu Feb 08, 2007 1:58 am
Forum: Wireless Networking
Topic: Routerboard 532 and daughterboard 564
Replies: 4
Views: 1073

how many watts does teh R52 burn? Looking at the spec sheet it only provides the mA pull.

thanks
Multiply by bus voltage, 3.3V, make sure your units are right (1A=1000mA).
by dbostrom
Tue Feb 06, 2007 6:09 pm
Forum: RouterBOARD hardware
Topic: RB112 Serial Port Setup Problem
Replies: 5
Views: 2742

'/ port' configuration modification for RB100 is possible only at 3.0 version (not 2.9) On a somewhat related note, any plans for serial port in v3 to allow ad hoc sending/receiving of characters via scripting, etc? This would be a massively useful feature for instrumentation of sites, construction...
by dbostrom
Mon Feb 05, 2007 4:22 am
Forum: RouterBOARD hardware
Topic: New Routerboards?
Replies: 71
Views: 18704

I found this image of RB133c: http://www.cyberbajt.pl/cyber.php?i=produkt&id=1551 http://www.cyberbajt.pl/cyber.php?i=produkt&id=1550 Mikrotik Polska has this page: http://www.mikrotik.org.pl/urzadz.php?gr=5&kat=35&idx=730&PHPSESSID=4ba22a667d6243db884e918609b0b89f A square RB112? There's got to be...
by dbostrom
Mon Feb 05, 2007 12:41 am
Forum: General
Topic: T1.IAS & LAES(Calea) Support Mandatory in USA
Replies: 46
Views: 9587

If it has to be done and MT can't! Man! what a market killer!
Over night the US could be dead for MT. :cry:
Yeah. No way are we going to do the right thing and ignore this. Jackbooted thugs can ruin your whole day...
by dbostrom
Sun Feb 04, 2007 7:45 pm
Forum: Wireless Networking
Topic: HIGH SR9 Failure Rate
Replies: 11
Views: 2285

Woke up this morning to a -40c with a wind chill down in the -50c range. We should see a high today of about -28c and the forecast say these temps will be with us till Friday. The highest temp over the next few days will be about -22 -25c. We have several 532's and 3 112's with SR2,5's and a couple...
by dbostrom
Sun Feb 04, 2007 5:47 am
Forum: Wireless Networking
Topic: Solar Power Hotspot
Replies: 13
Views: 2840

dbostrom, I followed your advice, and built the system using 3 RB532's. I ordered a 40 watt solar panel, along with a 10 amp sunsaver controller. Quick question however, has anyone designed a way to monitor the battery voltage remotely using the routerboards or some other IP based device? I think t...
by dbostrom
Fri Feb 02, 2007 6:07 pm
Forum: Wireless Networking
Topic: HIGH SR9 Failure Rate
Replies: 11
Views: 2285

Re: HIGH SR9 Failure Rate

I'm done. I've had it. Every SR9 I've deployed in the field has worked fine until I start associating clients to it. When they start being used EVERY one fails within a Week! I had one sitting on a tower for 6 months with no problems. I associate a client to it - running solid -69/-70 in a week it ...
by dbostrom
Fri Feb 02, 2007 4:37 pm
Forum: General
Topic: MLPPP support for bonded T1's and T1 Interface Card
Replies: 2
Views: 737

If not would be great thing for v3. Is in Linux kernel...
by dbostrom
Fri Feb 02, 2007 6:49 am
Forum: General
Topic: Hotspot giving Vista BSOD
Replies: 8
Views: 1838

Re: Hotspot giving Vista BSOD

I'd like to see this first hand, and to see what code is causing it (probably Javascript).
You think? Perhaps the offending code is Vista. I mean, it --is-- offensive... :roll:
by dbostrom
Fri Feb 02, 2007 4:29 am
Forum: Wireless Networking
Topic: MT 3 beta 5 - SR9 AP WDS association issue?
Replies: 6
Views: 1427

Could you elaborate on how to reset pin?? Is this something on the ubiquiti SR9 card itself?? MiniPCI bus includes a reset pin that is asserted (actually taken logic low) by the bus host during system reset. This should cause the daughtercard to also come back to reset condition, which in turn ough...
by dbostrom
Fri Feb 02, 2007 2:45 am
Forum: Wireless Networking
Topic: MT 3 beta 5 - SR9 AP WDS association issue?
Replies: 6
Views: 1427

By bizarre coincidence, read this post yesterday, ran into similar problem today for the first time. RB112, 18v PS, running 2.9.39, serving as AP w/SR9. Two months+ stable uptime, then today voila, card does not associate w/clients. Scanning from subject AP reveals no other 900 APs visible, scanning...
by dbostrom
Thu Feb 01, 2007 6:49 am
Forum: Wireless Networking
Topic: Packet loss
Replies: 4
Views: 1098

Assuming CPE are not MT w/nstreme, try adjusting auction service customer's CPE RTS threshold down, below the size of whatever packets the auction service customer is sending. Yes, it results in a little loss of throughput, but theoretically faster links are worth less than links that actually deliv...
by dbostrom
Thu Feb 01, 2007 5:01 am
Forum: General
Topic: Route traffic to default gateway based upon traffic type
Replies: 3
Views: 891

Although we don't do this on RouterOS I can say it's a great technique for offloading bulk traffic that does not care about latency etc. from expensive symmetric circuits. In our case we mark http requests which are consequently routed to a squid box that in turn is connected to a "commercial" cable...
by dbostrom
Wed Jan 31, 2007 3:55 pm
Forum: RouterBOARD hardware
Topic: New Routerboards?
Replies: 71
Views: 18704

Normis, speaking of this whole topic, if you guys are still in layout for new boards be sure to check out this board from ADI: http://www.adiengineering.com/php-bin/ecomm4/productDisplay.php?category_id=27&product_id=85 . 25W 3.3v supply dedicated to PCI bus power, space for 4 long form miniPCI on ...
by dbostrom
Wed Jan 31, 2007 2:53 pm
Forum: RouterBOARD hardware
Topic: New Routerboards?
Replies: 71
Views: 18704

Normis, speaking of this whole topic, if you guys are still in layout for new boards be sure to check out this board from ADI: http://www.adiengineering.com/php-bin/ecomm4/productDisplay.php?category_id=27&product_id=85 . 25W 3.3v supply dedicated to PCI bus power, space for 4 long form miniPCI on o...
by dbostrom
Tue Jan 30, 2007 2:48 am
Forum: RouterBOARD hardware
Topic: New Routerboards?
Replies: 71
Views: 18704

On the other hand MT's a small company, has been releasing boards at a respectable clip. Making a formal announcement (as opposed to discussing notoriously elastic roadmaps before a limited audience) prior to wringing out bugs, getting certifications is a jinx ticket to an entirely different categor...
by dbostrom
Sun Jan 28, 2007 6:46 pm
Forum: RouterBOARD hardware
Topic: Lot of reboots on RB153
Replies: 4
Views: 1818

Yes, my spark 139 working on 2,4GHz. I have two installations with rb153. First have 18V power supply from PC Engines, second have buffered power supply 24V (2 x 12V 7Ah batteries) - 2.5A. Reboots are on both of RouterBoards. Different power supplies, 24v at 2A is plenty, meanwhile unlikely to have...
by dbostrom
Sun Jan 28, 2007 6:33 pm
Forum: Wireless Networking
Topic: logic for 400mw or more when serving laptops
Replies: 6
Views: 1908

Maybe just try cranking TX power down on SR2 and see what happens? You might want to set up some kind of testing range for this so as to make sure you eliminate moving bodies etc. as as uncontrolled variables.
by dbostrom
Sun Jan 28, 2007 12:06 am
Forum: RouterBOARD hardware
Topic: Lot of reboots on RB153
Replies: 4
Views: 1818

Sparklan 139 does not draw a lot of juice but in any case probably first thing to check is amperage of power supply, integrity of crimps on POE. Also I that the Sparklan wants 5v for the 802.11a PA stage so I'm guessing you're on 2.4ghz here. I don't think the RB153 is capable of supplying 5v. If al...
by dbostrom
Fri Jan 26, 2007 5:13 pm
Forum: Wireless Networking
Topic: Solar Power Hotspot
Replies: 13
Views: 2840

From your description it sounds as though the work you describe could be reasonably be divided among a group of 3 RB532 for a hit of about 9 watts not counting the wireless cards which will be there in any configuration and thus are not really part of a comparison. Others might legitimately disagree...
by dbostrom
Fri Jan 26, 2007 4:52 pm
Forum: Wireless Networking
Topic: RB 532 + 501 and 400mw cards
Replies: 6
Views: 1251

may users have not that knowledge and they will NOT read your post to the end and they will put 2 or more SR cards and come here and whine that RB hanging/burning/crashing and will go forum-bashing and will say that they will sell all MT equipment if problem is not solved in 2 hours or else.... :( ...
by dbostrom
Thu Jan 25, 2007 8:19 pm
Forum: Wireless Networking
Topic: Solar Power Hotspot
Replies: 13
Views: 2840

First question is, do you really, really need a P4? That's going to require a very expensive array and string of batteries to run reliably so unless you absolutely require that CPU horsepower try to stay with something less beefy. For that matter you could run several RB532 for a fraction of the jui...
by dbostrom
Thu Jan 25, 2007 8:14 pm
Forum: Wireless Networking
Topic: sr9 and client distance
Replies: 26
Views: 3991

There isn't a way to calculate based on what specs the Antenna and cable have? No, its a factor of the quality of the antenna design (decent design has low reflected power even over the relatively wide bandwidths required for this application), the quality of your connector workmanship (properly as...
by dbostrom
Thu Jan 25, 2007 8:10 pm
Forum: Wireless Networking
Topic: RB 532 + 501 and 400mw cards
Replies: 6
Views: 1251

The answer might be "it depends". We have a couple of RB532 w/2 400mw cards (SR5) and 2 CM9 that have been up and running without a hiccup for well over a year. The main reason why this works is because the SR5 cards are working at over 24Mbps, which means that they're not consuming the higher watta...
by dbostrom
Wed Jan 24, 2007 10:03 pm
Forum: Wireless Networking
Topic: sr9 and client distance
Replies: 26
Views: 3991

For right now the best information on the effect of rates, bandwidth are probably the following writeups by Ubiquiti. Point-to-point: http://www.ubnt.com/downloads/SR9_Mtik_PtP.pdf and point to multipoint: http://www.ubnt.com/downloads/SR9_Mtik_PMP.pdf Our own experience closely matches the data the...
by dbostrom
Wed Jan 24, 2007 7:18 pm
Forum: Wireless Networking
Topic: sr9 and client distance
Replies: 26
Views: 3991

We're seeing results very similar to slipstream1's. However that news about coexisting w/Canopy is very good to hear; we don't have the problem in our area.
by dbostrom
Wed Jan 24, 2007 7:06 am
Forum: RouterBOARD hardware
Topic: RB532 with Ubiquiti SR2 and SR5, too mucho power consumption
Replies: 6
Views: 2381

If you are pushing the PS to 80% I would keep an eye on cooling. I dont tink I would want it on a tall tower... I hate hights !!! Things that make you go Hmmmmm..... Craig The radios in question are scattered through jungle a little over 8,000km from where I sit so they'd better darned well not fry...
by dbostrom
Wed Jan 24, 2007 6:44 am
Forum: RouterBOARD hardware
Topic: RB532 with Ubiquiti SR2 and SR5, too mucho power consumption
Replies: 6
Views: 2381

Our experience w/RB532 is that it has no problem running 2 SRx radios. If you do the math on the power consumption the watts are available to run the cards. According MT specs, 14 watts are available on the RB532 3.3v rail w/ 3 watts consumed by RB532, leaving 11 watts for running cards. 1.3A to run...
by dbostrom
Tue Jan 23, 2007 8:46 pm
Forum: RouterBOARD hardware
Topic: Hats off to MT for low-voltage performance of RB532
Replies: 0
Views: 1030

Hats off to MT for low-voltage performance of RB532

This probably ought to go the the Routerboard forum but the readership there is very low and in any case my login does not work for some reason... Having recently squeaked through another winter solstice w/ our various solar powered systems, I want to extend thanks to MT for for the RB532 w/its abil...
by dbostrom
Tue Jan 23, 2007 4:21 pm
Forum: Wireless Networking
Topic: the best minipci card for Routerboard532
Replies: 4
Views: 1297

We have many SR2, SR5 cards in service. They're reliable and live up to claims.
by dbostrom
Mon Jan 22, 2007 8:44 pm
Forum: Wireless Networking
Topic: Long and Short Links on One Sector
Replies: 8
Views: 1973

Probably goes without saying, but is your ACK time set to "dynamic"?
by dbostrom
Mon Jan 22, 2007 3:57 pm
Forum: General
Topic: BETA Testing and Feature Suggestions for next routeros
Replies: 329
Views: 80303

Hey - don't call my work-arounds clutchy :D (just kidding) ... I mean "hack" in the very best sense of the word! But if you're doing things yourself, you could also step up to using an own linux distro giving you all abilities you could dream of?! Yeah, but there are so many places where I have God...
by dbostrom
Mon Jan 22, 2007 5:40 am
Forum: General
Topic: 153 Routerboard
Replies: 59
Views: 9826

If it's of any help in this thread, we have two RB153 in service populated w/ one each CM9, SR2 and SR9 cards (ie 3 cards per RB153). ROS=2.9.39. Power supply is 48v. Backhaul is via CM9, SR2 and SR9 are customer access with one WDS connection each on the SR2 and SR9 for standby backhaul. These boxe...
by dbostrom
Sun Jan 21, 2007 7:38 pm
Forum: General
Topic: BETA Testing and Feature Suggestions for next routeros
Replies: 329
Views: 80303

Pardon me if it's already been mentioned or if I've missed some way of doing it that's already in ROS, but the ability to squirt arbitrary strings of characters out of the serial port via the scripting language would be great. I've seen a hack on the Wiki that allows this (using modem setup string) ...
by dbostrom
Sat Jan 20, 2007 7:51 pm
Forum: General
Topic: Adding a load balancer in Beta ?
Replies: 6
Views: 2619

Supposedly MLPPP is part of the presently used kernel. That would be a nice option to tap into.
by dbostrom
Sat Jan 20, 2007 7:58 am
Forum: General
Topic: VOIP Trouble & Load Balanced T1's
Replies: 4
Views: 1037

"MLPPP, MLFR, and IMA typically use a round-robin algorithm to balance traffic among member links within a bundle, leading to fairly equal use of all links. However, it is now possible to receive (and forward) out-of-order packets. MLPPP compensates for this feature and buffers packets received out...
by dbostrom
Thu Jan 18, 2007 11:21 pm
Forum: Wireless Networking
Topic: Street Light Tap?
Replies: 1
Views: 699

There's this product

http://www.ewingfoley.com/ElectricalFPBHLumP1.htm

which is a bit expensive but looks like it ought to work for many applications.
by dbostrom
Tue Jan 16, 2007 4:09 pm
Forum: Wireless Networking
Topic: Pros & Cons - Single radio APs vs. Multi-radio APs
Replies: 6
Views: 1518

We have a number of RB230, 532, 153 and even lowly RB112 boards running with multiple radios and have had no stability problems as long as we've made sure the power supply voltage was stiff enough (ie, enough current available to make sure voltage does not sag). Typical of our stuff are RB532s w/2 S...
by dbostrom
Wed Sep 06, 2006 5:22 pm
Forum: Wireless Networking
Topic: Nstreme Dual Questions?
Replies: 18
Views: 3617

Also I live in Kansas. Here almost every day is 15-20mph winds in the afternoon. Storms every month have 60mph winds. Wind load and structural integrity is almost as important for reliability as signal. Be sure to equip the dishes w/radomes. They're not only good for ice, they also do amazingly goo...
by dbostrom
Wed Sep 06, 2006 3:38 pm
Forum: Wireless Networking
Topic: Nstreme Dual Questions?
Replies: 18
Views: 3617

Re: 200 MHz separation

If you don't understand why 200 MHz separation is neccessary then look on the hardware design of the WLAN cards or better look at professional ptp-microwave equipment. Thy have a separation up to 1080 MHz. Begging the question, how is that we have 802.11a and/or 802.11b equipment colocated w/far sm...
by dbostrom
Wed Sep 06, 2006 3:31 am
Forum: Wireless Networking
Topic: Specs for normal nstream
Replies: 7
Views: 1398

We are trying to get max performance on point to point links over 12km using 5.8GHz. Would you recomend nstream for this or just a normal link ? Thanks We've got a pretty fair sampling of 5.8 point to point links running anywhere from 20 to 50km using a mixture of 230 and 532 boards and bandwidths ...
by dbostrom
Wed Sep 06, 2006 1:36 am
Forum: Wireless Networking
Topic: Specs for normal nstream
Replies: 7
Views: 1398

It depends on your notion of reasonable. We've got quite a few nstreme (half-duplex) links running on 230 and 532 model router boards, quite slow processors compared to your candidate. They do very nicely for us in their roles, which involve maybe 12-15Mbps maximum traffic. Here's the rundown on the...
by dbostrom
Sat Sep 02, 2006 4:26 pm
Forum: General
Topic: Display a single page on unauthorized requests
Replies: 5
Views: 1490

Well, that's actually my question. HOW to do this port forwarding thing? The server that will hold the page already has Apache running as is even accessable from outside the network (a simple NAT-ing). The problem is to redirect every unauthorized request to that page (the server + the path to the ...
by dbostrom
Fri Sep 01, 2006 7:47 pm
Forum: General
Topic: Display a single page on unauthorized requests
Replies: 5
Views: 1490

Otherwise i do it by using port forwarding. I ahve one port forwarding rule that forwards all conections to http to local web server if user is not licenced. It works fine. Problemis that web server must accept connections regardingof URL. It sghould simply respond to any request with single page w...
by dbostrom
Fri Sep 01, 2006 4:15 am
Forum: Wireless Networking
Topic: PtP 5.8 Bridge and MAS90
Replies: 3
Views: 1021

As e2346437 suggests, there might be a better way to skin this cat, though it's odd and intriguing that your app should be so dog-slow. VNC will run blindingly fast over 36mbps...
by dbostrom
Sun Aug 27, 2006 7:48 am
Forum: Wireless Networking
Topic: diplexer
Replies: 4
Views: 1289

I would love to have a diplexer that can do 5mhz or 10mhz bandwith channels in 2.4Ghz and some for the 5.x Ghz range too. The off-the-shelf versions of these are tuned for standard 802.11x channels, so they'll work just fine for narrower channels. :D For 5.x ghz check out http://www.lorch.com/wirel...
by dbostrom
Fri Aug 25, 2006 5:19 pm
Forum: Wireless Networking
Topic: diplexer
Replies: 4
Views: 1289

Sorry, just ran into this but will reply because our results w/ the earlier model of diplexer sold by RFLinx are excellent, worth sharing. These are somewhat costly but highly effective in places where you may find yourself boxed-in due to physical constraints. Specific case is that we had an poorly...
by dbostrom
Thu Aug 17, 2006 4:51 am
Forum: Wireless Networking
Topic: Nstreme question: what latency at long range?
Replies: 10
Views: 2757

3-5ms 64 bytes, 9-11ms 1400 bytes, "half-duplex" nstreme w/exact fit, 3600 byte maximum frame size, polling, RB-230 talking to RB-532, AR5213 5.8ghz/5mhz, 49km. There's only a single client on this link but we find polling significantly reduces jitter while adding negligible (1ms?) latency for a net...
by dbostrom
Thu Mar 30, 2006 5:33 pm
Forum: Wireless Networking
Topic: RSSI LED SIGNAL STRENGHT
Replies: 9
Views: 2392

HI, My question is .. you have test if these scripts works? And what is output used from scripts on RB532? Regards You'd need to add some glue to make DirectWireless' example work, but scripting in general works excellently. Take a look at the documentation for scripting. Developing scripts is actu...
by dbostrom
Mon Mar 27, 2006 10:41 pm
Forum: Wireless Networking
Topic: poll: u.fl vs. mmcx for sr2, sr5 and soldering
Replies: 28
Views: 8413

Ubiquiti has or had a post on their web page about the mmcx not working correctly. http://www.ubnt.com/updates/index.htm It appears that since Aug 30th they have corrected it. John This is all really good information to have. We have at least four of the older boards in use. Now they say "Both the ...
by dbostrom
Mon Mar 27, 2006 7:59 am
Forum: Wireless Networking
Topic: poll: u.fl vs. mmcx for sr2, sr5 and soldering
Replies: 28
Views: 8413

no no no - mmcx is good on 5GHz, but on SR-5 mmcx's are no as good as Ufl. We tested this on about 10 "different" SR-5 (from other distributors, not a same time) and the result was that... UFL is better than MMCX on SR-5 about 5dB!! Ah, I think I understand. You're not saying U.FL are better than M...
by dbostrom
Mon Mar 27, 2006 2:42 am
Forum: Wireless Networking
Topic: poll: u.fl vs. mmcx for sr2, sr5 and soldering
Replies: 28
Views: 8413

On UFL you will have about 5dB better signal than on MMCX Really, over twice the signal manages to squeeze through a U.FL? That's quite a performance boost. I missed that in the data sheets; I'd have thought Hirose would tout such a remarkable advance even more than the miniaturized size. Actual ma...
by dbostrom
Fri Mar 24, 2006 3:44 am
Forum: Wireless Networking
Topic: RSSI LED SIGNAL STRENGHT
Replies: 9
Views: 2392

LEDs are great, even better in some ways than beepers. I guess I shouldn't suggest it without showing an example, but I imagine one could combine a script and the single user controllable LED to do some kind of visual RSSI indication. 1/2 hertz, 1 hertz, 2 hertz, etc. It should even be possible to d...
by dbostrom
Wed Mar 22, 2006 4:03 pm
Forum: Wireless Networking
Topic: poll: u.fl vs. mmcx for sr2, sr5 and soldering
Replies: 28
Views: 8413

According to manufacturer's datasheets, MMCX is good for far more insertions/removals, has --slightly-- better electrical specs. By hand, feel is obviously way more rugged. U.FL removal is supposed to be done with a tool sold by Hirose. No such requirement for MMCX. U.FL connectors are intended to g...
by dbostrom
Sat Mar 18, 2006 8:31 pm
Forum: General
Topic: minor HCI usability wishes
Replies: 27
Views: 9724

I would like to split shutdown and reboot buttons by other. Sometimes we want quickly reboot the router, but we click not reboot, but whutdown button :) Yeah, or maybe for shutdown a second "Are you REALLY sure you want to shut down your router that is an 80km round trip and hours of downtime away?...
by dbostrom
Sat Mar 18, 2006 8:16 pm
Forum: General
Topic: Urgently need 2.9.5 for RB500
Replies: 4
Views: 847

Re: Urgently need 2.9.5 for RB500

Hello, I am in urgent need of RouterOS 2.9.5 for RB500. Everything above 2.9.5 breaks WDS with Prism. It's a long story how I got myself in this predicament, so I'll spare everyone the details. Would just be really appreciative if someone could share 2.9.5 for RB500 with me. Thanks, Dave Be nice if...
by dbostrom
Sat Mar 18, 2006 8:03 pm
Forum: Wireless Networking
Topic: crazy link
Replies: 3
Views: 1114

Re: crazy link

I just setup a new link that is shooting thru 1"grass with coating, .75" dry wall and another 2" dry wall to a roof top about .33 mile way.

Any thoughts on how to make the link better?
Sledgehammer? :D
by dbostrom
Sat Mar 18, 2006 4:23 am
Forum: Wireless Networking
Topic: SR2 w/ RadioWaves 16dBi sector
Replies: 15
Views: 4007

I'm about to switch over to Prism cards. I've experienced problems like this in noisy RF environments and the SR2 cards just wont perform. Regarding operating in noisy environments, one sad thing about the Prism cards is that (at least in 2.9.13/14, I wouldn't be surprised if this is another thing ...
by dbostrom
Fri Mar 17, 2006 6:39 pm
Forum: Wireless Networking
Topic: Staion with Ntreme and bridging
Replies: 5
Views: 1382

'mode=station-wds' should be used for wireless interface, when you have Nstreme .
Optionally...
by dbostrom
Wed Mar 15, 2006 6:23 pm
Forum: Wireless Networking
Topic: profssional wirless guys i need answer within 24Hrs
Replies: 7
Views: 1641

thanks dbstrom, i know all of these but i want you experinse in actual site As the other posters say, it varies hugely depending on circumstances. Here's an example: Some time ago we had a WRT54G-- equipped with standard rubber duck antennas, sitting in a 2nd story window and set to 50mw-- accident...
by dbostrom
Wed Mar 15, 2006 3:55 pm
Forum: Wireless Networking
Topic: profssional wirless guys i need answer within 24Hrs
Replies: 7
Views: 1641

no one give me clear answer guys, now i m making 7km from omni 15db to 20db CPE client 11g (73mw) < from aircord.com ok for example i m using 400mw with MT -----> to the 20db (73mw) can i make it 7 or more or less if we consider the same enviroments Just pop those numbers into a calculator and you'...
by dbostrom
Wed Mar 15, 2006 5:43 am
Forum: Wireless Networking
Topic: profssional wirless guys i need answer within 24Hrs
Replies: 7
Views: 1641

"I am alive and on planet Earth. What should I do next?"

More information needed to be of help, but generally speaking an SR2 w/a Mikrotik is a pretty romantic marriage, especially compared to a union between a geriatric unsupported chipset and an amplifier of unknown provenance...
by dbostrom
Tue Mar 07, 2006 6:48 pm
Forum: Wireless Networking
Topic: Connot get WEP to work with Prism
Replies: 9
Views: 2006

BTW, does anybody know if RADIUS mac authentication will work in conjunction w/a Prism card or is that broken as well?
by dbostrom
Tue Mar 07, 2006 5:28 pm
Forum: Wireless Networking
Topic: Connot get WEP to work with Prism
Replies: 9
Views: 2006

please look at this note: http://www.mikrotik.com/docs/ros/2.9/interface/wireless.content#4.13.16.4 Interesting punt. I wonder what workaround other manufacturers came up with for all the Prism-based products that --do-- properly support WEP? We just spent $500 and a full day having a tree climber ...
by dbostrom
Thu Mar 02, 2006 7:58 pm
Forum: Wireless Networking
Topic: RF questions...
Replies: 2
Views: 1187

We've been quite happy with Pacific Wireless antenna products. Their sector antennas are excellent value for the money. Our only complaint w/Pacific Wireless is their spotty and inconsistent use of stainless aiming hardware. We've got quite a few of their 5.8ghz solid dishes in use and while they're...
by dbostrom
Tue Feb 28, 2006 4:09 pm
Forum: Wireless Networking
Topic: 2.9.13 good wireless results
Replies: 11
Views: 3248

Will there be problem with upgrading first "the core" to 2.9.14 and after that the other routers. I mean is there problem 2.9.14 to work with 2.9.8 - wds/nstream ? Don't know about WDS, but we've had no problems (so far knock on wood pray to appropriate cloudbeings etc.) w/one end running nstreme w...
by dbostrom
Mon Feb 27, 2006 4:50 pm
Forum: Wireless Networking
Topic: Mysteries of the night
Replies: 10
Views: 2276

mostly windless conditions
Ah, so! Some information, anecdotes about ducting here http://forum.mikrotik.com/viewtopic.php?t=5770.

Very hard problem to solve if indeed it is ducting. Surplus jet engines strategically placed along path? :shock:
by dbostrom
Mon Feb 27, 2006 6:53 am
Forum: Wireless Networking
Topic: Mysteries of the night
Replies: 10
Views: 2276

Is this happening in windless conditions? Calm air can lead to inversions, layering and hideous ducting. Might be worth collecting the data UniKyrn suggests and then seeing if there's a correlation with weather conditions.
by dbostrom
Mon Feb 27, 2006 6:49 am
Forum: Wireless Networking
Topic: 2.9.13 good wireless results
Replies: 11
Views: 3248

Adding another good report on 2.9.13 here. We have a partially complete AP and backhaul site that was running 2.9.5. The site is set up w/a 14dBi 180 2.4ghz sector and a 29dBi 5.8ghz backhaul antenna. The backhaul is not yet running, but we had very marginal contact with the new site from another of...
by dbostrom
Mon Feb 27, 2006 4:24 am
Forum: General
Topic: EoIP tunnel problems.
Replies: 6
Views: 2261

What happens if you increase the MTU on the EoIP tunnel? I've noticed that if I try to ping through an EoIP interface w/ a packet larger than the MTU, RouterOS complains with a message, "packet too large and cannot be fragmented". It does sound as though there are some misbehaving routers in this pi...
by dbostrom
Sun Feb 26, 2006 8:42 pm
Forum: Wireless Networking
Topic: faustrating issues on performance
Replies: 22
Views: 5369

Sorry to disagree, but, amps can work just fine if you use high quality units and engineer your system properly. Agreed. If you use an SR5 or SR2, you're using an amplifier. Some years ago, in another life, I did engineering for AM and FM radio stations. Typically we'd use a device called an "excit...
by dbostrom
Sat Feb 25, 2006 5:36 am
Forum: Wireless Networking
Topic: 5Ghz-5Mhz band destroys wireless cards
Replies: 7
Views: 3326

budi_a, We're using manual tx power, with the cards dialed pretty far back from the maximum output for a given rate. That was the case prior to the units volunteering to change their mode to fixed. The spontaneous change of tx power happened only once, the very first time we made the change to 5mhz ...
by dbostrom
Fri Feb 24, 2006 10:52 pm
Forum: General
Topic: mikrotik routeros is based on linux kernel?
Replies: 29
Views: 12040

Whether or not Mikrotik makes source code available superficially means squat to 99.9% of users. The more important question (to me, anyway!) is whether Mikrotik offers useful patches back to the kernel tree. That's where most of us could benefit from Mikrotik when it comes to the world outside a Ro...
by dbostrom
Fri Feb 24, 2006 7:41 pm
Forum: Wireless Networking
Topic: 5Ghz-5Mhz band destroys wireless cards
Replies: 7
Views: 3326

If it's any help, I just had an interesting experience while trying narrow band mode that sounds similar to what kujtimhajredini describes but appears to be reversible and definitely not lightning-related. Layout is an 2.4ghz MT client and AP situated about 42km apart, bridging a group of customers ...
by dbostrom
Wed Feb 22, 2006 6:58 pm
Forum: General
Topic: Prevent customers sharing their connection
Replies: 41
Views: 8036

Perhaps the first thing to address is, "What am I selling?" Bandwidth? Connections? Convenience? Annoyance? Here in the U.S. we have approximately a fifth of the workers in our "healthcare industry" busily occupied with figuring out why people should --not-- get healthcare. It costs us "heathcare co...
by dbostrom
Wed Feb 08, 2006 5:05 am
Forum: General
Topic: corrupt flash disks and check-disk
Replies: 3
Views: 1561

the check disk sometimes gives out misleading messages, `errors corrected` often simply means that something had changed. We will improve it, meanwhile don't worry about it Heh! I was just searching the site to see if I could find some information on restoring an RB230 unit that had a handful of po...
by dbostrom
Sun Jan 22, 2006 7:10 pm
Forum: Wireless Networking
Topic: SR5 setup
Replies: 11
Views: 3271

Do a web search for SR5 cards and look at the specs. As the speed of the link is increased above 24Mbit, the power output of the card is reduced. 24Mbit is the highest rated speed that still produces 400mw output. By the time you get to 54Mbit, the output drops to 100mw. Yeah, good idea (doi!) , an...
by dbostrom
Fri Jan 20, 2006 4:40 am
Forum: Wireless Networking
Topic: SR5 setup
Replies: 11
Views: 3271

Can anybody definitively say what's up with the power level vs. frequency vs. rate with these cards? Elsewhere on this board I've read that the SR5 reduces power when run below the 5.8 band. Here on this thread there's a hint of that: "I would sugesst to set the freq on SR5 5800 in turbo mode. We ha...
by dbostrom
Fri Dec 23, 2005 11:18 pm
Forum: Wireless Networking
Topic: 25km 2.4Ghz Point to MulltiPoint
Replies: 14
Views: 3785

As ejansson says, it can work. We have a small handful of users at these distances but it's a matter of pure luck as they happen to be up on hillsides and can see APs that also happen to be highly elevated on topography. There's also the matter of then having to set very wide ACK windows for these u...
by dbostrom
Wed Dec 07, 2005 9:57 pm
Forum: Wireless Networking
Topic: 60km link ?
Replies: 20
Views: 6488

Ducting

Chucka, there are have been some truly phenomenal hops done at microwave frequencies thanks to tropo thermal ducting: July '94,July '91 Station: N6CA Location: 33-43-45 N. ... 118-22-30 W. Band: 2304, 3456, 5760 Mhz. Distance: 2474.476 Mi. ... 3982.283 Km. Talk about trapped in a layer!!! You would ...
by dbostrom
Wed Dec 07, 2005 6:14 pm
Forum: Wireless Networking
Topic: 60km link ?
Replies: 20
Views: 6488

I saw the calibration note, but I have only turned it on on a short test link I have running, so far. I can only think that maybe I am picking up some interference from far away when conditions are ideal. Unless of course, it *is* temperature related. It doesn't cause much of a problem because it i...
by dbostrom
Mon Dec 05, 2005 5:43 pm
Forum: Wireless Networking
Topic: U.FL versus MMCX connectors (or, why go microscopic?)
Replies: 10
Views: 11338

U.FL versus MMCX connectors (or, why go microscopic?)

Rant about connectors here. U.FL connectors are touted as "the world's smallest" coaxial connectors. This is just fine for teeny-weeny applications such as the guts of a cell phone or when packed into a laptop but not so great for applications on a more normal physical scale and especially those tha...