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Thanks. In most of USA, Anything below 5mg (miliguass/that would be 0.5 microtesla) is considered "residential safe" here. In fact, the NIH and many agencies list the "safe" level at less than 100mg. And for workers, it is less than 500mg. The meter is calibrated, it is a TriField TF2. I drove...

So FYI. I got it fixed... mostly. Here is what it was. The power lines and transfer station in my area are causing higher than normal levels of EMF. I have a TriField tester and my average Magnetic field is 2-4. To give you an idea of how much higher this is than normal, at work the field is...

PS: The forum won't let me post the actual links as links, as my account is too new. Sorry. I attempted to overcome this, if this breaks the rules, please let me know and I will remove them.... It just means you will have to do some work to visit the links, change DOT to . Sorry, I have no...

Thanks mjbphotos. I have now tested 3 different xlr mics. They all have the same problem at the same orientations. Anyone think it is possible it could be rf or something similar? Seriously driving me crazy

So, when I record, I am getting a high pitched humming sound in the 500-650hz range. However, this only occurs if my microphone is at specific angles. For example, if the mic is at 6 oclock or 12 oclock, it is fine. Otherwise, it gets worse with this noise. Here is the setup - Rode Procaster...