I would love to have a 900mhz mimo card to run in my Mikrotiks with Nstreme v2.. That would keep me from having to go to UBNT for some planned rural projects.

Any chance? Or does anyone know of another manufacturer?

You can use the Ubiquiti XR9.

http://www.titanwirelessonline.com/Mikr ... kt-900.htm

Mimo / 802.11n?

I dropped this topic

I am guessing I will have twice the nlos as the XR9 card.

Physics is Physics.

All conditions being equal, noise floor, power output 36dBm "fcc limit", etc you may see an improvement with multi path reflections from building nlos but I doubt you will see much of a difference with foliage nlos.

I dropped this topic

Sorry but you are wrong,

902-928Mhz is limited to 36dBm for both PTP and PTMP.

Please check your facts before providing misinformation that could potentially get someone in trouble.

Client radios are not limited to 36dbm. Read the fcc again. Also I am transmitting 2 multipath rf signal at same time.

I dropped this topic

I dropped this topic

forum should have some kind of limitations for posting at 2 min interval...you know about Edit button?

I am working with a prototype. Keep in touch. If I get it done I will send you all the specs. I am guessing I will have twice the nlos as the XR9 card. Yes is 802.11n 2 ports.

It's a pity in Europe we are not allowed to use 900Mhz...

Dallas,

What you posted above clearly states what I am telling you.

(4) Except as shown in paragraphs (b)(3) (i), (ii) and (iii) of this
section, if transmitting antennas of directional gain greater than 6 dBi
are used the peak output power from the intentional radiator shall be
reduced below the stated values in paragraphs (b)(1) or (b)(2) of this
section, as appropriate, by the amount in dB that the directional gain
of the antenna exceeds 6 dBi.

The above states that the transmit power must be reduced by the same amount that your antenna gain increases over 6dBi to maintain 36dBm power output.

Below is the exclusion for 2.4Ghz PTP

(i) Systems operating in the 2400-2483.5 MHz band that are used
exclusively for fixed, point-to-point operations may employ transmitting
antennas with directional gain greater than 6 dBi provided the maximum
peak output power of the intentional radiator is reduced by 1 dB for
every 3 dB that the directional gain of the antenna exceeds 6 dBi.

Example:
Max Transmitter RF power (dBm) Antenna Gain (dBi) EIRP (W)
30 6 3.98
29 9 6.35
28 12 10.14
27 15 15.81
26 18 25.23
25 21 40.28
24 24 62.79
23 27 100.2

Below is the exclusion for 5.8Ghz PTP

(ii) Systems operating in the 5725-5850 MHz band that are used
exclusively for fixed, point-to-point operations may employ transmitting
antennas with directional gain greater than 6 dBi without any
corresponding reduction in transmitter peak output power.

This is the definition of PTP

(iii) Fixed, point-to-point operation, as used in paragraphs
(b)(3)(i) and (b)(3)(ii) of this section, excludes the use of point-to-
multipoint systems, omnidirectional applications, and multiple co-
located intentional radiators transmitting the same information.

Again the only exception to 36dBm is for PTP 2.4Ghz and 5.8Ghz. 900Mhz has no such exclusion. If you need more supporting documentation I can provide it, but you provided it yourself.

You are still wrong and it is kind of funny that you reduce my karma because I reduced yours for providing incorrect information.

Thanks,
Chadd

I dropped this topic

Its says its for 900mhz and it does not exclude it from the part 15.

I edited my post to be more clear.

I'm afraid chadd came up with the best arguments so far....

secondly:

Client radios are not limited to 36dbm.

You can boost up the clients what you want, if you not at the same time increase the client antenna gain (and then boosting up the client makes no more sense) it doesn't serve any purpose. Or boost up the AP, but that is what you guys fight about anyway.
Boosting up the client way over the AP makes the signal of the client reach the AP, but signal of AP (already lower due radiant spread in PtMP) might not reach the client or be very weak.
Power levels and losses are bi-directional. Antenna gain works both ways. In and out.

Apart from that, 900Mhz imho might increase the NLOS characteristics considerable. It has far more penetrating power through vegetation and buildings. Hence analogue TV used it (In Europe).
Hence cell operators are dying to get their hands on this band for usage in Europe while small WISP operators don't get a piece of that pie! (Well they simply can't afford it! In Europe this band is going to be auctioned.)

About taking karma points: It happened to me once. I would say you should only do this if somebody is clearly abusing this forum or where a discussion clearly leads to showing someone spreading intended mis-information. I think actually only a moderator should have the power to take karma points.
If somebody feels that someone else should be lowered in his karma, a 3rd party should decide.

Here is a table that shows allowable frequencies and EIRP for Part15 equipment. This was put together by Kristian Hoffmann.
Thanks,
Chadd