AIR 3 Beta for Mac

[Petter]

-18dBm? That's insane! I get between 4-5 bars of reception indicated in the AIR app and that's around -55 to -58dBm. And that's only about 1.5m away from the AP which is a triple antenna job.

As far as I am concerned, I noticed that above -30db, the results were less stable, and the production of white noise more likely. Therefore, I have installed my Master unit on the bottom shelve of my rack, and the Airport Extreme on the floor just below it (10 cm away). This is also part of the recommendations of a group of French Devialet supporters who carefully studied how to make it work reliably.

Part of the recommendation is to have an external switch to isolate the network traffic between the computer and the Devialet from your cable/telco box, in case you use a WAP, or in case you use an Airport device, to separate the two wave bands, dedicate the 2.4 GHz band to the Devialet and the 5.0 GHz band to the connection with the computer.

This way, you reduce the possibility of interference on the wave band of the Devialet and therefore the risk of white noise.

why not just take away the  Airport Extreme (i did) and go straight with some cat 7/8 cabel from network router to a quality switch ,and from switch to devialet, i did that and eliminated the Extreme ,better sound quality and never had any problems whatever ,even Roon now works just great with new air over ethernet cable. 
Next week a new switch is comming in the doors wit external psu,shal be funny to compare with the ol HP one.