Very glad to see newsletter 18. Thanks guys.
http://www.mikrotik.com/pdf/news18.pdf
Where can I find more info on these cards?

Ekkas

Finally

Here: http://www.routerboard.com/prices.html
r2n is 39$
r52n is 49$

Waiting for specification sheets.

Thanks for that. What I really want is the technical specs like transmit power, sensitivity.
Also a guideline as to how far should the dual antennas be placed, does dBi make a difference in placement?
Should both antennas be identical? etc.
Excited about the possibilities that the n-card will bring, would love to try it out.

Also I am interesting if I simple replace R52 with R52n using only one antenna what bandwidth I can aspect ?
If someone try this please share result. Thanks.

I just update try to get the 8 digit new Soft ID, but it is seems, I only can get the new 8 digit soft ID by installing V4.0 beta, V3.24 cant work. is that correct?

any info, how many mW are the R52N and R2N?

anyone testing this new RB capabilities with other "n" miniPCI?

You can find the data sheets here:

http://www.roc-noc.com/pdf/R52N/R52n.pdf

http://www.roc-noc.com/pdf/R2N/R2n.pdf

Tom

Thanks for those datasheets.

I have a few lingering n-questions for metro wireless network.

a) What should antenna placing be? Should high- dBi antenna be further apart than 'right next to each other'?
b) Would n work good in links up to say, 7km?
c) If I simply add a R52n card with second antenna on my highsites, and my clients stay(for now) with their R52 on either a or b, will the mimo or n give any advantage in the number of clients that the AP can 'carry' or the overall throughput?

Thanks in advance
Ekkas

what about if i connect only one pigtail to r52n? Can that damage card?
What about 11n+nstreme, is that configration possible?
Can i use ubnt 11n cards now, they have atheros chipset, heve anyone tried?
Is it possible to mix 5ghz and 2,4 Ghz abds with one card?

If you use only one connector, then you need to specify to use only one TX/RX chain.
Currently Nstreme isn't working with N wireless cards.
You can't use 2.4ghz and 5ghz at the same time with one wireless card.

I'm still wondering about antenna placement...

a) What should antenna placing be? Should high- dBi antenna be further apart than 'right next to each other'? (Minimum/maximum seperation?)
b) Would n work good in links up to say, 7km or 15km?
c) If I simply add a R52n card with second antenna on my highsites, and my clients stay(for now) with their R52 on either a or b, will the mimo or n give any advantage in the number of clients that the AP can 'carry' or the overall throughput?
d) Can antenna A be vertical & Antenna B horizontally polarized? Whould that improve or degrade the system?

currently we haven't made any outdoor tests, so can't comment on it.
I would suggest put those antennas not very close to each other.
You can replace the regular R52 with R52N card and enable the b/g/n mode - the clients will be able to connect to the AP without problems.

Even if my client CPE have a single antenna?

yes, because then they will connect with regular b/g/a technology

Would they (the clients) then still need R52n if they connect with a, would R52 not be oki?
What I also meant was:
If my AP is dual-antenna with R52n cards and my clients stay with their R52, will the a/n on the AP be of any benefit?
Would mixed mode (a & n clients) also significantly reduce throughput? (Obviously not possible to change all clients to n at once)

Thanks for the responses so far.

Ekkas

of course there will be no benefit for the client who uses regular a/b/g card, but if you have one client that has "n" card, he would be able to get higher speed, and you would still keep legacy clients at the same time.

these cards just add one more technology - 802.11n, the other ones (a/b/g) still work the same.

Thank you for the responses.

Would the client with the n-card also have to have dual antenna?

to get real benefits - yes. but all laptops with 802.11n cards have multiple antennas built in, as do any other N devices.

Ok thank you.
Hope someone quickly makes an outdoor enclosure with built-in n-antennas...

Hi,

I have inserted R52n card on Alix board, with 24h try out license, wireless interface not present on interface list.
After that, I have insreted into a PC with updated 4.03beta Version, with updated, registred 8 digit license ID, but wireless interface not presen on interface list.

What is wrong?

Thanks, Bestefan

802.11n needs the new SoftID and key. Trial is not available

Ok, thank you.
On a PC was rieser card problem.

Ok thank you.
Hope someone quickly makes an outdoor enclosure with built-in n-antennas...

They are already available but more expensive than single element antennas.

http://www.roc-noc.com/product.php?prod ... =21&page=1

http://www.roc-noc.com/product.php?prod ... =21&page=1

Tom

i saw a different specification between ROCNOC and routerboard regarding R2N miniPCI, routerBoard said max dbm is 24 under 6MB-802.11G, and rocnoc version is 25dbm under 6MB-802.11G. which one is correct?

and than I test it myself and find only 20dbm available.
here is the default dbm that listed under RB411A, L4 version 4.0 Beta...

I cant found both 24 and 25 dbi there?

My two cents worth.

I replaced a R52 with an R52N over the weekend. Even though the client still connects at the same speed, there is a greater throughput and the link quality is better.

I'm putting it down to the MMCX connector.

Next stop would be for MikroTik to supply the R52H with MMCX connectors

Did you use dual antennas?

I replaced a R52 with an R52N over the weekend. Even though the client still connects at the same speed, there is a greater throughput and the link quality is better. I'm putting it down to the MMCX connector.

Neither of those cards have MMCX connectors. What do you speak of?

Neither of those cards have MMCX connectors. What do you speak of?

Sorry, my mind was dwelling on the R5H that I used to replace a R52H.

In the next RouterOS version we will show tx-power for both chains combined.

My RouterBOARD 411 doesn't recognize R52n wireless card...is this because of version of RouterOS or the hardware...and when I change my R52 card in RouterBOARD 433AH with r52n then I get smaller signal coverage...did anyone has experience like that?

You installed RouterOS 4.0beta3 and upgraded the license key? 802.11n cards will not be recognized until that is done.

http://wiki.mikrotik.com/wiki/802.11n_Setup_Guide

Tom

If I use n on rb411 my bottle neck will be the CPU? ( lets say I got a fine link)