MikroTik

Posted: **Wed May 13, 2009 5:58 pm**

I think I've done something really stupid and need help to work out what it is that I've done.

I've got two RB433AH's. Both have R52H's in them and both radios have 27dBi grid antennae. Both antennae are polarised horizontally. One antenna has 2m of LMR400. The other has 3m of LMR400. Here's a picture of one end of the link. Yes, the RB433AH on this side also has two R5H's that power the two 17dBi sectorals.

The grid antennae's frequency range is 5275Mhz to 5375MHz. They are currently running on 5320Mhz without problems. I did a snoop and found there was plenty of clean air in places like 5310 or 5290 Mhz but I just can't get the radios to sync on anything other than the "even" frequencies ie 5280, 5300, 5320

Where's the setting to get to use the "in between" frequencies?

Lastly, where can I get a table showing the frequencies that are made available when the "Custom Frequency Set" in installed?

Posted: **Thu May 14, 2009 4:24 pm**

Looks like a nice little setup there.

The only frequencies you can set a radio to and have it work correctly, are the ones that show up in the wireless info for the card (ie. '/interface wireless info print'). It is my understanding that the 'custom frequencies' allows access all the cards available frequency settings (ie. US public safety 4.9 GHz, etc) it does not allow you to type in whatever you want. You can access more channels settings by using smaller band sizes (ie. 10 mhz, or 5 mhz), however you do this knowing sacrificing bandwidth. I have tested some other competing products to RouterOS that give you the ability to shift frequencies (moves the centre of the channel up or down by a set mhz, usually 5 mhz). This would give you something closer to what you are looking for, and I would welcome that addition to RouterOS in the future.

Hope this helps.

Posted: **Thu May 14, 2009 5:12 pm**

/interface wireless info print

0 interface-type=Atheros AR5413 chip-info="mac:0xa/0x5, phy:0x61, a5:0x63, a2:0x0, eeprom:0x5003" pci-info="00:12.0"
capabilities=tx-power-control,ack-timeout-control,virtual-ap,alignment-mode,noise-floor-control,scanning,burst-support,nstreme,sniffing,power-channel,wmm
default-periodic-calibration=enabled supported-bands=2ghz-b,5ghz,5ghz-turbo,2ghz-g,2ghz-g-turbo,5ghz-10mhz,5ghz-5mhz,2ghz-10mhz,2ghz-5mhz
2ghz-b-channels=2412:0,2417:0,2422:0,2427:0,2432:0,2437:0,2442:0,2447:0,2452:0,2457:0,2462:0,2467:0,2472:0
5ghz-channels=5180:0,5185:0,5190:0,5195:0,5200:0,5205:0,5210:0,5215:0,5220:0,5225:0,5230:0,5235:0,5240:0,5245:0,5250:0,5255:0,5260:0,5265:0,5270:0,5275:0,
5280:0,5285:0,5290:0,5295:0,5300:0,5305:0,5310:0,5315:0,5320:0,5500:0,5505:0,5510:0,5515:0,5520:0,5525:0,5530:0,5535:0,5540:0,5545:0,5550:0,
5555:0,5560:0,5565:0,5570:0,5575:0,5580:0,5585:0,5590:0,5595:0,5600:0,5605:0,5610:0,5615:0,5620:0,5625:0,5630:0,5635:0,5640:0,5645:0,5650:0,
5655:0,5660:0,5665:0,5670:0,5675:0,5680:0,5685:0,5690:0,5695:0,5700:0
5ghz-turbo-channels=5210:0,5215:0,5220:0,5225:0,5230:0,5235:0,5240:0,5245:0,5250:0,5255:0,5260:0,5265:0,5270:0,5275:0,5280:0,5285:0,5290:0,5530:0,5535:0,
5540:0,5545:0,5550:0,5555:0,5560:0,5565:0,5570:0,5575:0,5580:0,5585:0,5590:0,5595:0,5600:0,5605:0,5610:0,5615:0,5620:0,5625:0,5630:0,
5635:0,5640:0,5645:0,5650:0
2ghz-g-channels=2412:0,2417:0,2422:0,2427:0,2432:0,2437:0,2442:0,2447:0,2452:0,2457:0,2462:0,2467:0,2472:0 2ghz-g-turbo-channels=2437:0
5ghz-10mhz-power-channels=5175:0,5180:0,5185:0,5190:0,5195:0,5200:0,5205:0,5210:0,5215:0,5220:0,5225:0,5230:0,5235:0,5240:0,5245:0,5250:0,5255:0,5260:0,
5265:0,5270:0,5275:0,5280:0,5285:0,5290:0,5295:0,5300:0,5305:0,5310:0,5315:0,5320:0,5325:0,5495:0,5500:0,5505:0,5510:0,5515:0,
5520:0,5525:0,5530:0,5535:0,5540:0,5545:0,5550:0,5555:0,5560:0,5565:0,5570:0,5575:0,5580:0,5585:0,5590:0,5595:0,5600:0,5605:0,
5610:0,5615:0,5620:0,5625:0,5630:0,5635:0,5640:0,5645:0,5650:0,5655:0,5660:0,5665:0,5670:0,5675:0,5680:0,5685:0,5690:0,5695:0,
5700:0,5705:0
5ghz-5mhz-power-channels=5175:0,5180:0,5185:0,5190:0,5195:0,5200:0,5205:0,5210:0,5215:0,5220:0,5225:0,5230:0,5235:0,5240:0,5245:0,5250:0,5255:0,5260:0,
5265:0,5270:0,5275:0,5280:0,5285:0,5290:0,5295:0,5300:0,5305:0,5310:0,5315:0,5320:0,5325:0,5495:0,5500:0,5505:0,5510:0,5515:0,
5520:0,5525:0,5530:0,5535:0,5540:0,5545:0,5550:0,5555:0,5560:0,5565:0,5570:0,5575:0,5580:0,5585:0,5590:0,5595:0,5600:0,5605:0,
5610:0,5615:0,5620:0,5625:0,5630:0,5635:0,5640:0,5645:0,5650:0,5655:0,5660:0,5665:0,5670:0,5675:0,5680:0,5685:0,5690:0,5695:0,
5700:0,5705:0
2ghz-10mhz-power-channels=2412:0,2417:0,2422:0,2427:0,2432:0,2437:0,2442:0,2447:0,2452:0,2457:0,2462:0,2467:0,2472:0
2ghz-5mhz-power-channels=2412:0,2417:0,2422:0,2427:0,2432:0,2437:0,2442:0,2447:0,2452:0,2457:0,2462:0,2467:0,2472:0

1 interface-type=Atheros AR5413 chip-info="mac:0xa/0x5, phy:0x61, a5:0x63, a2:0x0, eeprom:0x5003" pci-info="00:14.0"
capabilities=tx-power-control,ack-timeout-control,virtual-ap,alignment-mode,noise-floor-control,scanning,burst-support,nstreme,sniffing,power-channel,wmm
default-periodic-calibration=enabled supported-bands=2ghz-b,5ghz,5ghz-turbo,2ghz-g,2ghz-g-turbo,5ghz-10mhz,5ghz-5mhz,2ghz-10mhz,2ghz-5mhz
2ghz-b-channels=2412:0,2417:0,2422:0,2427:0,2432:0,2437:0,2442:0,2447:0,2452:0,2457:0,2462:0,2467:0,2472:0
5ghz-channels=5180:0,5185:0,5190:0,5195:0,5200:0,5205:0,5210:0,5215:0,5220:0,5225:0,5230:0,5235:0,5240:0,5245:0,5250:0,5255:0,5260:0,5265:0,5270:0,5275:0,
5280:0,5285:0,5290:0,5295:0,5300:0,5305:0,5310:0,5315:0,5320:0,5500:0,5505:0,5510:0,5515:0,5520:0,5525:0,5530:0,5535:0,5540:0,5545:0,5550:0,
5555:0,5560:0,5565:0,5570:0,5575:0,5580:0,5585:0,5590:0,5595:0,5600:0,5605:0,5610:0,5615:0,5620:0,5625:0,5630:0,5635:0,5640:0,5645:0,5650:0,
5655:0,5660:0,5665:0,5670:0,5675:0,5680:0,5685:0,5690:0,5695:0,5700:0
5ghz-turbo-channels=5210:0,5215:0,5220:0,5225:0,5230:0,5235:0,5240:0,5245:0,5250:0,5255:0,5260:0,5265:0,5270:0,5275:0,5280:0,5285:0,5290:0,5530:0,5535:0,
5540:0,5545:0,5550:0,5555:0,5560:0,5565:0,5570:0,5575:0,5580:0,5585:0,5590:0,5595:0,5600:0,5605:0,5610:0,5615:0,5620:0,5625:0,5630:0,
5635:0,5640:0,5645:0,5650:0
2ghz-g-channels=2412:0,2417:0,2422:0,2427:0,2432:0,2437:0,2442:0,2447:0,2452:0,2457:0,2462:0,2467:0,2472:0 2ghz-g-turbo-channels=2437:0
5ghz-10mhz-power-channels=5175:0,5180:0,5185:0,5190:0,5195:0,5200:0,5205:0,5210:0,5215:0,5220:0,5225:0,5230:0,5235:0,5240:0,5245:0,5250:0,5255:0,5260:0,
5265:0,5270:0,5275:0,5280:0,5285:0,5290:0,5295:0,5300:0,5305:0,5310:0,5315:0,5320:0,5325:0,5495:0,5500:0,5505:0,5510:0,5515:0,
5520:0,5525:0,5530:0,5535:0,5540:0,5545:0,5550:0,5555:0,5560:0,5565:0,5570:0,5575:0,5580:0,5585:0,5590:0,5595:0,5600:0,5605:0,
5610:0,5615:0,5620:0,5625:0,5630:0,5635:0,5640:0,5645:0,5650:0,5655:0,5660:0,5665:0,5670:0,5675:0,5680:0,5685:0,5690:0,5695:0,
5700:0,5705:0

Posted: **Thu May 14, 2009 7:22 pm**

For non-standard frequencies, you need to add the frequencies to the scan-list on the client.

Posted: **Thu May 14, 2009 7:27 pm**

All I want to do is transmit and receive on 5310 Mhz.

Posted: **Fri May 15, 2009 1:05 am**

All I want to do is transmit and receive on 5310 Mhz.

Did you try what JJCinAZ suggested?

Posted: **Fri May 15, 2009 8:37 am**

All I want to do is transmit and receive on 5310 Mhz.
Did you try what JJCinAZ suggested?

The frequency list looks the same on both routerboards.

Posted: **Fri May 15, 2009 8:56 am**

not the frequency list, the scan-list. change that on the client.

Posted: **Fri May 15, 2009 9:11 am**

I've done some reading up on Scan List and it appears it's current set to default ism.

How do I change that to 5275-5375 ?

Posted: **Fri May 15, 2009 9:53 am**

umm, just like you apply any other config in RouterOS?

[admin@router] > interface wireless set wlan1 scan-list=5275-5375

Posted: **Fri May 15, 2009 10:03 am**

Thanks Normis,

Is it safe to do this in a production environment?

Should I send somebody up to the high site (AP) before I start fiddling with the station? I'd hate to lock myself out of the backbone and have grumpy paying clients on my hands.

Posted: **Fri May 15, 2009 10:06 am**

you can enter a wider range in the scan list, also include the known working frequencies just to be sure.

Posted: **Fri May 15, 2009 10:13 am**

Thank you.

MikroTik

Using the "in between" frequencies

Using the "in between" frequencies

Re: Using the "in between" frequencies

Re: Using the "in between" frequencies

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Re: Using the "in between" frequencies

Re: Using the "in between" frequencies

Re: Using the "in between" frequencies

Re: Using the "in between" frequencies

Re: Using the "in between" frequencies

Re: Using the "in between" frequencies

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Re: Using the "in between" frequencies

Re: Using the "in between" frequencies