Hi,

I have an issue with very poor reception in 2 of my links, in my Mikrotik Router ( P4 PC x86 ) i have 3x AR52N cards which work perfectly and another 2x AR52 which also work flawlessly. Now i bought some NEW AR52N cards to replace/upgrade the older AR52 so i can go N on all of my links.

When i swap the NEW AR52N cards in the place of the AR52 and migrate all the settings the signal drops 20-30dbm ( from the level achieved with the old AR52 cards ) and a link is not possible. Also i want to state that i plug the end on my pigtails on the NEW cards where it says J2 ( like i did with the already existing AR52N cards ) and of course there is an LMR400 cable with N-type plugs attached to the pigtails .

If i try to put the old cards back in the poor reception is gone and the links return to the previous working state. I didn't move the pigtails around, i never disconnected the LMR cable from the pigtail, i never messed with the alignment of the antennas and both ends of the links have Mikrotik installed, i just swapped the cards. On the HT tab chain 0 is checked. Also the cards don't seem to experience and IRQ/DMA conflict and are recognized normally by the operating system.

I have also informed the people where i bought the cards from and i am waiting for their reply. Any ideas are welcome, i want to make sure that i didn't get 2 faulty cards. It would be for me if your can think of a list of things that could have gone wrong cause i don't have the luxury of going to the pc to try just one thing out and then come back and post. When i can have some time off work i need to go on site where the pc is try like 10 different things out and then see what is going on.

Here is a video of my installation to help you understand better what i have done. ( i don't claim any prices for the video but is decent enough )

http://www.youtube.com/watch?v=X6-1MlTOx4k

http://www.tiktube.com/?video=446


Thanks your help i hope i made my self clear
Chris

i would check very carefully your antenna connections from the card to the antennas.

are you using dual chain? if not, make sure you are using the correct connector on the cards...

signal that low indicates an antenna / pigtail problem definetely in my opinion.