On Mon, Sep 26, 2022 at 12:05 PM, Fred M wrote:
There also valuable information in Owen Duffys Blog
Yes, and compare his graphs from the linked articles showing the Signal to Noise degradation in a typical residential environment.
Single turn loop terminated in 50 Ohms
Youloop terminated in 50 Ohms
The Youloop is slightly better on the lower frequencies <1MHz, but a few dB worse just about everywhere else.
Note this comparison is using the ITU residential curve as a reference.
The ITU Rural or Quiet Rural would show much, much, more signal degradation. Which emphasises the point I was trying to make about the effect of the local noise floor, and a broadband loop antenna not having sufficient gain / sensitivity and comparisons being constrained by this factor.
Regards,
Martin
