PA0FRI - bardzo dużo o ATU

[SP3SWJ]

no tam jest dużo fajniejszego materiału ...

no i pisze o eATU

This prematch tuner can be simple and consist of an inductor with taps and switch-selectable capacitors. If each band always uses the same antenna, the pre-tuner needs to be set up only once and then can be bandswitched with a stepping switch or relays from the shack. Fig a (upper), with the capacitor on the antenna side of the coil,

i eATU to mozna czytac jako extarnal ATU

albo bardziej pokręcone extraneous ATU