472 kHz - "top-hat" coil: yes or no ?
Wheter you doubt it ?...

Are you still unsure ?  Some are not. Also I do not...
I'am not the figured this first ! (also). Just to confirm. Influence of trees is interesting. This little later.

Increase the level of ERP with coil, is around 60 % !  With adequate quality coil
Increase the level cca 15m. from antenna is 4dB - not to consider for calculation ERP ! 
Of course,measured in accordance with the rules of measurement ERP !!  Not anyhow.
Even the
profesionals take advantage of these findings. Change old higher antennas. And it's not because it could be worse.

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