Hi,
i have had this machine on testing for some 14 days or so, the schematics of the "G" version could be found in
www.thunting.com (see PI and deepseekers).
Depth wise, this machine could be compared with Miner4 (some 3m down to humid forest soil), Miner4 is more sophistiocated (modern, digitalised) and offers wider wariety and more refined settings, which also makes it more difficult to use. The Pulstar II features a discriminator, two diodes only, which is quite bogus for deep targets (more guessing than detecting), the same goes for Miner4 only the Miner calculates the share of diamagnetic and ferro/paramagnetic in total (all metals) signal. For shallow targets (i.e. some 20-30 cm) both are working more or less well for a PI. I had both schematics but i chose to build the Miner4 (at that time i did not know the DBP2010).
DBP2010, however, features no discriminator and other bells and wisthels, non the less, depth wise and price wise it outperformes both machines (down to good 4m, EUR 300 for material), analog design makes it straight forwart to use, no or little false signals at max. sensitivity, which cannot be said for abowe detectors. This, in my oppinion, is the best machine to cover the deep end in the up to $2000 range, maybe even more, and it is definitly a choice to build.
regards,
d.