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Building a full duplex link.
Posted: Sat Nov 27, 2010 4:00 pm
by towerguy
I'm currently in the process of getting the equipment together to build a full duplex link. R52H cards should do the job. My question, should I use the RB-433 board or the RB-800 board or some other RB? What advantage is one over the other? Are the R52H cards ok?
Thanks,
Larry
Re: Building a full duplex link.
Posted: Sat Nov 27, 2010 4:03 pm
by SurferTim
Have you looked into the R52Hn? Full duplex in one radio. AND mmcx connectors!
Re: Building a full duplex link.
Posted: Sat Nov 27, 2010 4:12 pm
by towerguy
Yes, I have got some on the way.
Thanks.
Re: Building a full duplex link.
Posted: Sat Nov 27, 2010 8:42 pm
by InoX
Have you looked into the R52Hn? Full duplex in one radio. AND mmcx connectors!
wrong
you should be shame; no single radio card is full duplex
Re: Building a full duplex link.
Posted: Sun Nov 28, 2010 2:26 pm
by towerguy
Yes, I know one card does not do it all. I'm more interested in which routerboard to use. I would prefer to use the rb-433 cards, but would it be better to use the rb-800 and why?
Re: Building a full duplex link.
Posted: Sun Nov 28, 2010 2:37 pm
by SurferTim
Have you looked into the R52Hn? Full duplex in one radio. AND mmcx connectors!
wrong
you should be shame; no single radio card is full duplex
I don't know...what does this look like to you?
http://www.mikrotik.com/wireless.php#nstrm
Maybe I am wrong, but there are two MMCX connectors on a R52Hn, one for transmit, one for receive. You can use it single channel also from what I understand.
Re: Building a full duplex link.
Posted: Sun Nov 28, 2010 3:09 pm
by towerguy
FCC and CE approval
MikroTik introduces the R52Hn wireless 802.11a+b+g+n miniPCI card for multiband high speed applications, with up to 350mW output power. It works on 2.192-2.539 and 4.920-6.100GHz frequency range and supports Turbo mode for faster transfers. The card performs best when coupled with the MikroTik RouterOS. R52Hn is optimized to work with MikroTik Nstreme protocol to reach extra long distances at a great speed. The Nstreme protocol is MikroTik proprietary wireless protocol created to overcome speed and distance limitations of IEEE 802.11 standards and to extend point-to-point and point-to-multi point wireless link performance. The new Nstreme-dual protocol designed to provide real full-duplex communications over wireless with a pair of wireless cards – one for transmitting data and one for receiving.
This is what they say. Last sentence says it all.
Re: Building a full duplex link.
Posted: Sun Nov 28, 2010 5:28 pm
by roc-noc.com
That is the same marketing hype that they have been laying out for the R52 and R52H and all other MT branded radio cards. I think the confusion comes from using Nstream and Nstream-dual in the same blurb.
Nstream is a protocol that is quite useful to improve performance by combining data packets in a single radio packet to improve total throughput. It also extends the ack for longer links.
Nstream2 aka Nstream-dual uses two radios at each end of a PtP link (4 total) to create a full duplex link. Personally I think they should have named this something else to avoid the confusion with Nstream.
And now they have added the new protocol Nv2 which I really hope does not stand for Nstream version 2.
Tom
Re: Building a full duplex link.
Posted: Sun Nov 28, 2010 5:40 pm
by SurferTim
Hi Tom! If it is not full duplex, how can it transmit with two powerful PAs concurrently? Normis says it can.
http://forum.mikrotik.com/viewtopic.php?f=3&t=38457
Maybe normis was incorrect? The data sheet seems to back him up. 7 watts is a LOT for one radio.
Re: Building a full duplex link.
Posted: Mon Nov 29, 2010 7:37 pm
by mbsteez
Full duplex doesn't transmit with 2 radios, it uses one radio to transmit and one to receive. Full duplex indicates bidirectional data transmission is possible AT ALL TIMES.
Re: Building a full duplex link.
Posted: Mon Nov 29, 2010 9:20 pm
by SurferTim
The R52Hn is not full duplex (verified by Mikrotik support). If you want full duplex, it takes two. At 7 watts each for half-duplex, I'll stay with the R52H.
Re: Building a full duplex link.
Posted: Tue Nov 30, 2010 2:28 pm
by temuri426
for that configuration i recommend you to use rb433ah boards, they have better performance cpu... when i've used just rb433 with two r52nM card it was rebooting somtimes... so use 433ah....
Re: Building a full duplex link.
Posted: Wed Dec 01, 2010 2:11 pm
by towerguy
Great input. I will be using the R52H cards and 433ah boards and see what happens. Keep the input coming. Thanks.
Re: Building a full duplex link.
Posted: Wed Dec 01, 2010 3:39 pm
by ddlan
Re: Building a full duplex link.
Posted: Sat Oct 06, 2012 9:23 am
by saintofinternet
Can the last post be converted to english please....