Is a 37 km hop reasonable p-p in the clear for the SXT 5.8G?
Thanks!

37km is too much between two SXT, they are not made for such long distance.
You can use wireless link calculator to get the distance with used parameters,
http://www.mikrotik.com/test_link.php

Thank You Serge, that tool would work very well if the receiver sensitivity and transmitter power were known. I have not been able to find in the manual where those specs are listed. I have read on the wiki where users are deploying the Sextant 5G over 60+ km hauls... and it is working! How is this possible?

Thank You Serge, that tool would work very well if the receiver sensitivity and transmitter power were known. I have not been able to find in the manual where those specs are listed. I have read on the wiki where users are deploying the Sextant 5G over 60+ km hauls... and it is working! How is this possible?

Must be a typo , 6+ kms yes but not 60+

From SXT brochure,

TX power 802.11a: 31dBm @ 6Mbps to 28 dBm @ 54 Mbps
802.11n: 30dBm @ MCS0/8 (20/40MHz) to 26dBm @ MCS7/15 (20/40MHz)
RX Sensitivity 802.11a 6Mbit/s: -93dBm; 54Mbit/s: -77dBm
802.11n 5GHz MCS0 20MHZ (6.5Mbit/s) -93dBm
802.11n 5GHz MCS7 40MHZ (135Mbit/s) -71dB

Thank You so much MicroTic Support!
Needless to say we are less than happy, happy, happy to learn that we apparently purchased the wrong wireless router set for our application. I wish I had been involved in this earlier in the process. Does MicroTic manufacture a wireless gigabit router that will make a 37km path haul with room to spare??

Hmm Sextant 5G is that not working?

Send from mobile phone

Thanks for the interest Jimmy,
I'm afraid that our path is just too long at 37 km. Someone who had this project before I got it thought that this was going to work and we bought the units. I just sent an e-mail to Support asking what product we should have bought. I am also very interested in a radio that will go into the 4900 Mhz Public Safety band. It is much quieter there. Wish me luck... I don't want to go back to M if I can keep from it... too expensive!

To get a reliable link, you'll need 3' dishes. The Metal 5SHPn or R5SHPn mPCI card would be your best bet for radios. If you need more than about 80Mbit/s of actual throughput, you'll need to use a 2x2 radio and antenna. Unfortunately, MT does not have a product that will do this at this time, but their biggest competitor does have a product that would allow you to push close to 180Mbit/s at that distance.

I believe MT has a license option that will allow you into the 4.9Ghz area. I'm not sure about the other guys, but they are approved for DFS, which opens up a ton of extra frequencies to use.

Good luck!

To get a reliable link, you'll need 3' dishes. The Metal 5SHPn or R5SHPn mPCI card would be your best bet for radios. If you need more than about 80Mbit/s of actual throughput, you'll need to use a 2x2 radio and antenna. Unfortunately, MT does not have a product that will do this at this time, but their biggest competitor does have a product that would allow you to push close to 180Mbit/s at that distance.

I believe MT has a license option that will allow you into the 4.9Ghz area. I'm not sure about the other guys, but they are approved for DFS, which opens up a ton of extra frequencies to use.

Good luck!

Does that product have a model no.

Roadie, you've been in the game long enough to know exactly what company and which of their products I'm referring to. I will not mention it here because I don't want to piss off the Latvian Mafia!

Here's a hint though... its named for a type of metal that's often used in body part replacements, golf clubs, and it's what makes your white paint white...

Roadie, you've been in the game long enough to know exactly what company and which of their products I'm referring to. I will not mention it here because I don't want to piss off the Latvian Mafia!

Here's a hint though... its named for a type of metal that's often used in body part replacements, golf clubs, and it's what makes your white paint white...

Ha Ha?
...............a chemical element with the symbol Ti and atomic number 22?

That would be it.

Honestly though, if the folks at MT get pissed, so be it. They know as well as anyone that they do not have a product in the same class as the RocketM5-Ti. It can easily do the 37km link and should come very close to 180Mbit/s throughput.

I have set up a few links using the DBii F52n-PRO, but sadly, that card was discontinued after a single(?) production run. By far the best mPCI cards I've ever used for 5Ghz PTP and 2.4Ghz PtMP. I also set up a few links using the RB711G-5HnD, which are reasonably impressive, but MT no longer produces those either.

Honestly though, with the Ti's issues, I don't know if they're even worth it, but even the standard Rockets are good up to the 100Mbit/s limitation of the copper.

-Troy

Thanks Troy, I am grasping at straws... calling in favors and going places I have never gone before to find a product that will do this. I hope they don't blame me, I'm just the engineer As such I will ride this train right over the edge. Kudos and Karma for the advice!

Ryan,

There's another possibility that I just stumbled on while checking routerboard.com for something else.

The RB912UAG-5HPnD has a radio that will cover that distance. One added bonus to this, is that it also has a slot for a 3G modem, which can provide either out-of-band management or possibly backup bandwidth for an IP based digital trunking system.

Check with the boys at MT to see if they can unlock the 4.9Ghz stuff for you.

-Troy

For all who are following and interested, I did get an answer back from Support... RouterBoard products will go into the 4.2 to 4.9 Ghz Public Safety Band in the U.S. with a specific license to unlock that band. This was great news because there is much less interference down there for critical Public Safety communications which is FCC licensed. At 20 Mhz bandwidth 33dbm transmitter power is authorized, 3 dbm more than the public band. This would have a substantial impact on a "long" path. What Support did not say is if the Sextant 5G would produce an additional 3dbm (without overheating problems).

I think it is way too much , you should keep it around 25-30.