MikroTik RouterOS • View topic

opalit · **Posted:** Sun Mar 11, 2012 2:28 am

This is something I am getting over my 6k and 1k links, it has been happening for about 5 weeks, always between 4:30 and 8:30 PM GMT, the spectrum anylyser shows interference across every single channel of the 5Ghz range, it is across the whole range and lasting about 5 mins max, it knocks out all the bridge links but not the AP's, except I am using Ubiquiti, that is why I have just purchased the Sextant radios to see if they are working any better.

Could it be the solar flares.

shadowskippie · **Posted:** Wed Mar 14, 2012 10:18 am

at a regular time and daily?

I have never known the sun to be that specific with it schedules.
Anyways, it may be something else, but i doubt it is the sun.

One question though, I'd like to know if those sextants work better then the UBNTs, i'm trying to get my boss to use the Mtik equipment over the UBNT equipment for transparent links

esfahanweb · **Posted:** Wed Oct 03, 2012 4:48 pm

it's clear that sextants work better then the UBNT

Basiley · **Posted:** Sun Dec 09, 2012 8:17 pm

maybe something industrial/military ?
or commercial stuff improperly installed ?
If you had spectrum analyzer, GNURadio, WinRadio with this band module and etc - you can actually get some details.
but generally only feds had hardware and experience to locate this both in time, frequency and location.
maybe worth contacting your region communications suprevisors/inspectors.
generally NOBODY should shouting with SUCH transmission power on ISM bands. ever !![in civilian time]
talking about YOU case - such bands and such outputs - usual[similar] to radio-relay stations and [Especially!]for tropo-scatters. some mobile Tropo stations [usually military/gov't]use, despite small size - output measured in KW and even MW !! [but more densely occupied tropo was in K-Band]. Radars can do too, but they working on persistent basis, except some space-sensing and other specific, so wouldn't be related to timed/sheduled issues/troubles.

p..s
remind me one story when overloaded cell station with improperly installed[broken] bandpass filter severely cripple other stations nearby and even wi-fi in proximity.

CyB3RMX · **Posted:** Mon Feb 11, 2013 7:31 am

shadowskippie wrote:

at a regular time and daily?

I have never known the sun to be that specific with it schedules.
Anyways, it may be something else, but i doubt it is the sun.

One question though, I'd like to know if those sextants work better then the UBNTs, i'm trying to get my boss to use the Mtik equipment over the UBNT equipment for transparent links

Im running Ubiquiti 90 degree 5GHz sectors 19dbi with 711GA-5HnD as an AP, and have hooked around 30 sextants and 15 SXT 5HnD and the farest SExtant its at 13.2 km from the ap and have a -72dBm and a 14mbps throghput. They work like charm with nv2 and dual chain enabled.

CyB3RMX · **Posted:** Mon Feb 11, 2013 7:34 am

Basiley wrote:

maybe something industrial/military ?
or commercial stuff improperly installed ?
If you had spectrum analyzer, GNURadio, WinRadio with this band module and etc - you can actually get some details.
but generally only feds had hardware and experience to locate this both in time, frequency and location.
maybe worth contacting your region communications suprevisors/inspectors.
generally NOBODY should shouting with SUCH transmission power on ISM bands. ever !![in civilian time]
talking about YOU case - such bands and such outputs - usual[similar] to radio-relay stations and [Especially!]for tropo-scatters. some mobile Tropo stations [usually military/gov't]use, despite small size - output measured in KW and even MW !! [but more densely occupied tropo was in K-Band]. Radars can do too, but they working on persistent basis, except some space-sensing and other specific, so wouldn't be related to timed/sheduled issues/troubles.

p..s
remind me one story when overloaded cell station with improperly installed[broken] bandpass filter severely cripple other stations nearby and even wi-fi in proximity.

You are replying to someone?... i get lost with your reply.

regards.

Degun · **Posted:** Fri Mar 08, 2013 7:32 pm

Hi sir. I don't think i am suppose to say this but i am just sharing my knowledge out. may be it might help. Well i am a guy who is mostly with the surfboard but i have learned that the more distance a connection has from the centre of the company or i guess its called the portal, the less the speed you get. Even i have experienced it out. Just saying. Might something be like that.

snowwhiteeg · **Posted:** Thu Mar 28, 2013 9:48 pm

wirelesswaves wrote:

http://www.ips.gov.au/IPSHosted/NCRS/wars/wars2002/proceedings/comm-f/screen/kerans1.pdf

http://sirkova.com/documents /ICEST_2003_Short_Distances.pdf
seo egypt
http://www.its.bldrdoc.gov/pub/ntia-rpt ... hap1-3.pdf
شركات التسويق
http://www.dxinfocentre.com/propagation/tr-modes.htm
شركات التسويق الالكترونى
Some of the above links are tiring reading, especially the third. For 30 years I played around with VHF communications, exploiting the uses of all known التسويق الإلكترونى propagation phenonema, including meteor scatter and moonbounce.

Maybe as I suggested, نشر موقع its not equipment related in any way, just that the freznel zone has given you less than your first expectations, and on the days of 20dB extra, your signal is actually enhanced.

The last link is the simplest explanation from us radio ham chappies

73's EA5/G0MGA

thanks alot for the links , i had a goog info from them

Cal · **Posted:** Wed Apr 03, 2013 1:17 am

lemontree · **Posted:** Fri Apr 19, 2013 11:20 am

Given that it suddenly changes and if you see that sudden 20db change on all channels, you should look into the equipment. I'd check the pigtails and coax. Also, I'm not a fan of those antennas for backhaul links (much prefer Radiowaves or Andrews parabolics).
Buy D3 Gold | RS Gold

filipearaujo · **Posted:** Sat May 04, 2013 9:02 pm

never will work u need put more high the antenna is ground on the moutain fresnel

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