Ken, I've had that problem on several systems. Running shielded CAT5 took care of most of the noise. I still can detect the noise on a very weak carrier received by the UHF repeaters but it's not bad enough to degrade service. The interfering signals aren't present all the time. They seem to slowly move across the repeater's input frequency. I don't believe there is any UHF signal being radiated by the WiFi antenna. Installing a band pass filter between the radio and antenna made no difference in the noise.
Dexter Ken Arck wrote: > I've started deploying WiFi nodes (500 mw radios) at my various sites > (so far, only one is done) and I've noticed some interference to one > of my UHF repeaters at that site. The interference is only noticable > on weaker signals (so obviously the interference itself isn't all > that strong) that manifests itself as a low level pulsing or clicking > sound "under" the UHF user. The WiiFi radio/router is mounted at the > top of the tower and fed power via the CAT5 cable (POE). The antenna > for the WiFi unit is in faily close proximity to the UHF antenna too. > I'm thinking moving the WiFi antenna a bit down the tower might solve > the problem. Then again, I'm not yet sure if it's an RF thing or the > CAT5 cable itself radiating (it ain't shielded) > > Anyone run into this before? > > Ken >
