Simple Russian PI detector Pirat

[kt315]

[kt315]

[kt315]

[kt315]

[kt315]

[kt315]

[kt315]

[kt315]

[kt315]

[bernte_one]

but good to see that eddy is back

[bernte_one]

but still not
works as it should
build two Units and made some improoved layouts
but still nothing usefull

[Eddy71]

http://www.geotech1.com/forums/showthread.php?19953-Simplest-PI-detector-possible&highlight=simplest

[kt315]

all info here at link
http://radioskot.ru/publ/metallopoisk/metalloiskatel_pirat/16-1-0-480
no most simple PI you can find.