first of all, good night and thanks in advance for the help they can lend me … I tell you briefly I am in the middle of a project with several links with the objective of taking service at a distance of 200k on average and most of them are a point with a signal quality at -55db and with a CCq that ranges between 96-100% are links echos in NV2 with RB912 “Basebox5Ghz” until there is everything well the last link of 130 Km I have already connect with an average of -65db and here is where the problem comes the link is not symmetrical in a direction CCq is 100% can pass with the test tool of bandwidth of mikrotik up to 120MB “theoretical” but in the opposite direction only pass 15-20MB with a CCq that does not exceed 55% … somehow they told me that they could be the pigtails and I changed them and I stayed the same, I had my doubts about a dish I was using in that link since I was half old believing that the antenna was damaged as such buy a new one vo and gave me exactly the same result, they told me it could be a radio that was damaged from the factory change the radio on the client side getting the same result I just need to change the radio on the AP side but I’m afraid to get the same result …
I will be passing the practical limit of the radius as far as the distance (but because in one direction if it raises the CCQ to 100%) in the other direction no …
I will definitely switch to ubiquiti airfiber 5x which I have been recommended a lot
some say that it is interference in the link (I’ve seen links with interference and are always symmetrical does not raise the CCQ% by any side in Tx or Rx)
I leave here some photos of what was tested today
I appreciate all the help that greetings can give me, I am attentive to any question
PS: my native languages are Spanish and Portuguese (Brazil) to write here I’m using the google translator I apologize for possible syntax errors …
Hi macdo, i think that you have a signal interference problem. If you have 100% of CCQ on Chain Tx this doesn’t mean that you will have 100% CCQ in Rx Chain also..
Think in this scenario:
** Point A (AP) ***
Used frequencies:
5180
5200
5220
5240
5500
5520
5540
** Point B (ST) ***
Used frequencies:
5180
5200
5600
5640
If you use for example the frequency 5500 in your link, the AP will have a 100% of CCQ in Tx Chain because this frequency (5500) are free in “Point B (ST)”, but when the station (Point B) will have to transmit to the AP the CCQ goes down because this frequency are used in “Point A” in another wireless equipment and are interferenced.
To determine wich is the better frequency to use, you will use the “Frequency Usage” tool under wireless options and you need to find a channel/frequency free in booth places. In this scenario we can use for example 5300 MHz.
I hope this help you to understand how wireless links works
hola gracias por la sugerencia. Tengo un problema con un enlace de netmetal5 dual chain. Es un link de 18 kms. En laboratorio a 10 metros me dejo pasar los megas de mi proveedor de fibra que son 300mbps simetricos, un ccq de 98%, ruido de piso -102dbm todo bien hasta alli. Pero ya en campo resulta el ccq malisimo de 51/30 y un ancho de banda de solo 5mbps. Puedes colaborarme con alguna sugerecia aparte de la que has publicado. muchas gracias.
Nota:
A los foristas le recomendamos tambien aprender o usar el español. Acaso estamos obligados a hablar ingles? para ello esta los traductores de google. gracias.
hola gracias por la sugerencia. Tengo un problema con un enlace de netmetal5 dual chain. Es un link de 18 kms. En laboratorio a 10 metros me dejo pasar los megas de mi proveedor de fibra que son 300mbps simetricos, un ccq de 98%, ruido de piso -102dbm todo bien hasta alli. Pero ya en campo resulta el ccq malisimo de 51/30 y un ancho de banda de solo 5mbps. Puedes colaborarme con alguna sugerecia aparte de la que has publicado. muchas gracias.
Nota:
A los foristas le recomendamos tambien aprender o usar el español. Acaso estamos obligados a hablar ingles? para ello esta los traductores de google. gracias.
Hello tay, your problem is that the signal are very interferenced. To get 300Mbps on your wireless LInk, you need at least -60dBm and a constant CCQ over 70-80% and set up your channel width to 20/40 Mhz.
If you cant pass more than 5Mbps in your link, please use “Frequency Usage” to find a clean frecuency to your link. You need at least 40MHz of free spectrum to get this.
Please do not write about “democracia”, “education” and “netiqueta”.
Could you imagine that someone could not know Spanish? Even if it is one of most used languages in the World.
There are rules you SHOULD obey using this forum. This is good behaviour and education.
In this case and searching in datasheet of this antenna the range in wich operates is 4900 - 5800 MHz. Im recommend you to use the frecuency 5120MHz at 40 MHz and try again your link throughput.
hello my friend you are about to become my new hero, make the change he told me and the ptp radically changed an image of him
although the CCQ% of the Rx continues to be maintained at 100% that of the Rx fluctuates constantly at a time it reaches 80% (there has never been there) and suddenly drops to about 45%, but the constant is about 65-70%
that another change you think that it must be done to finish stabilizing the CCQ% somewhere in the law that the MSC must be selected from 1-12 and so I have your opinion about it or that is indifferent to the CCQ%, greetings stay tuned
