2016-10-19, 21:38
I use the electrical earth for my system blue. It is in the loft (attic) and I ran a thick earth wire down to the main earth point at the fuse box/consumer unit, as there is no earth in my attic. Without an earth, my E-field antenna was useless, but the H-field antennas (ferrite rods) worked okay.
The E-field antenna will work inside, just try to get it as far away from other electrical devices, otherwise it might pick up too much noise. When my E-field antenna was inside (in the attic) or low down it wasn't very sensitive and didn't pick up too many strokes. The ferrite rods work well inside, so if you have limited space and no where to mount an E-field antenna outside two ferrite rods will probably work better.
Robin
The E-field antenna will work inside, just try to get it as far away from other electrical devices, otherwise it might pick up too much noise. When my E-field antenna was inside (in the attic) or low down it wasn't very sensitive and didn't pick up too many strokes. The ferrite rods work well inside, so if you have limited space and no where to mount an E-field antenna outside two ferrite rods will probably work better.
Robin