Tracker 2 PI MD

[kt315]

Clone - free HEX
Tracker - commercial programmed chip, $20; free demo HEX (low sens, especially cruded)
Koschej - commercial programmed chip, $20; free demo HEX (low sens)

[yhl]

Trcker PI 2 is the best?

[Belief]

http://radioskot.ru/publ/metallopois...i_2/16-1-0-426

[kt315]

with the LEDs - no possibility to tune 'protection interval' (the idiotic term made by Kolokolov, really this is STROBE DELAY WIDTH).
with LCD - is possibility to tune.

if you do with LEDs you do something un-sensitive to small gold. you know WHY, I TOLD YOU.