Hi all! Not sure if this is the right place but I am having really hard time getting these questions answered in other places as well. I became interested in EM topic when power company decided to build a 2x110kV power line near my house. I would like to approach this problem rationally with measuring tools to determine how far the EM field can reach before it becomes indistinguishable form other present radiation. Upon reading more about it I also became more aware of other source, especially HF ones inside my home and cell towers. I began to search for a viable measuring tool and quickly realized that I'll need to buy several to cover different frequencies and radiation magnitudes. If I may, I would like to ask everyone here a few questions: 1. Why do experts recommend measuring RF with a single meter while low frequency radiation is measuring magnetic radiation separated from electrical field? 2. Am I required to re-certify or re-calibrate my meters every once in a while to assure that the accuracy is still decent? I am afraid that this might prove to be very costly, especially in my country. 3. Some recommend using body volt meter to measure the electric potential on the body itself? How does it compare with mid tier hand-held meters and how would one compare the measurements from both methods? 4. I noticed that pricier gauss meters measure magnetic field in all 3 axis, 3d basically. But I couldn't find one that does the same with electrical field. Why is it so and do I even need to measure it in 3d? If I measure in 1 axis, do I need to take 3 measurements and combine them? 5. What exactly does noise represents on the measurement screen (I noticed HF meters often include signal amplifier but not LF ones)? I did email all of these questions to 2 re-sellers and 1 manufacturer and haven't received any replies in days even thou the meters in question were $500-$1000. I hope I can find some answers on this forum:) Thank you all for your effort and time.