Uniden BC780XLT

[Caboosey]

I have a Uniden BC780XLT hooked up to my server using a Antennacraft ST2. When the scanner is scanning, I and others hear like thumping noise or sounds like someone going down a hallway with high heels at a constant rate. I have moved all my cables around away from any other cables or power outlets.

Do I need to have ground isolators installed?

 

[DPD1]

I've heard that metronome type clicking from other radios while in scan mode, but not the 780, so that's kind of weird. However the 780 typically does have a ground loop issue... but that creates a hum usually, not a clicking. But if there's a reverb to it, it sounds like you might have some sort of loop happening somehow, creating a slight delay.

 

[Caboosey]

Here is my setup configuration:
1 antenna (Antennacraft ST2)
Coaxial splitter (5-1000MHz Range, EMI -130 dB, loss of -3.5dB)
All coaxial cables are RG6.
BC780XLT sends audio to left side to server. (Scanning 150-500MHz and 855MHz Range)
PRO-528 sends audio to right. (scanning 40MHz range)


I have tried directly hooking the BC780XLT to the antenna and still get same sound. Some days are better than others. I have four APC UPS's all my devices are hooked up. I have changed out my audio cables as well and retighten my coaxial cables. I have the coaxial and audio cables away from other cables and devices.

 

[SCPD]

Have you tried a 1:1 Audio insulator for your feed? If you disconnect the audio cable from the back of the radio does the sound stop?