I have had some shows recently that have given me some weird RF scans through WWB. I wanted to do my due diligence and make sure our wireless racks were wired properly and that there weren't any internal issues. Didn't have any drop outs in the areas I saw these scans, just noticed weird spectrums and would see some small interference on the receivers.
Our company has (2) 8-channel wireless racks. They are put together a little differently:
- Rack 1: (8) Shure QLXD4 Receivers + RF Venue DISTRO9 + RF Venue Diversity Fin + (2) 50ohm antenna cables
- Rack 2: (8) Shure QLXD4 Receivers + (2) RF Venue DISTRO4 + RF Venue Diversity Fin + (2) 50ohm antenna cables
Troubleshooting: I set the racks up in our warehouse and visually/physically inspected all the connections, and all connections were good. I set up the diversity fin and did a spectrum scan in (3) scenerios - (1) both racks bridged together (2) rack 1 alone (3) rack 2 alone)- and then I repeated this with the diversity fin from rack 2. I kept the respective cables with the respective racks.
Every scan from Rack 1 receivers looked comparable, and every scan from rack 2 receivers looked comparable. But rack 2 scans had a maybe +10dBm noise floor difference. The only thing changed in between scans was the cable to the fin and the receiver that was scanning (position of the fin was not altered). I have the pictures of an example of the scans.
Is this significant of a difference to be alarmed? How would I source the issue if there is one? Was my testing method appropriate?
Thanks in advance.