[Lowfer] Loop Ideas ??

[Bill Ashlock]

RX loop enthusiasts: Here's a question for you: With few exceptions every time I run an A/B comparison of a loop and a nearby Eprobe at LF I get exactly the same weak signal performance - IE the same S/N. This is in a controlled environment with no local interference and I always adjust the signals to exactly the same level and rotate the loop for maximum signal. The only exception in this comparison is when there is a directional noise signal and the loop can null this out, making the loop signal have the better S/N of the two. I would think that because of the figure '8' reception pattern of the loop the sensitivity to typical atmospheric noise would be reduced and the loop would always be the winner in these comparisons.  Maybe I'm wrongly assuming that the AT noise has equal E field and H field components and/or the E field component always the same strength as the H field component. Another possibility is that the loop has more noise pick up due to its wider azimuth angle pattern. Any thoughts? Bill
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.qth.net/pipermail/lowfer/attachments/20080927/6cfbe3d8/attachment.htm