One of my subscribers Bryan Louis suggested I use an SDR to take a visual look at the bandwidth of my LW induction loop. A very good idea and here are the results. What's interesting is the lower end of the bandwidth which is just below the bottom of the band is very clearly defined with the dual gangs fully meshed. At the upper bandwidth limit with the gangs fully open, the capacitance of my hand contributes to the overall capacitance of the loop and thus the upper limit is slightly more difficult to ascertain. Nevertheless, a very worthwhile and interesting experiment. Thanks for watching.
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