If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
It looks like in the 'Boosted' 4kHz mode, they genuinely are applying more voltage to the TX coil, rather than doing clever things on the RX side. The power consumption increase ( and battery lifetime decrease ) is evidence of this. They could be generating a higher PSU voltage with a switching regulator, it seems reasonable. They could have a tapped TX coil, and drive the tapping ( like an auto-transformer ). Or possibly use the 'double-tuned' transmit circuitry, with an additional L and C, to get higher coil voltage (as used in the Fisher F75).
I suspect its so it looks impressive when someone buries a target at 14" and its the only machine that finds it.
The AT Pro doesn't fair well on these type of video. Its probably loosing them sales. In a real field its rarely the deepest detector than wins the race. Its a combination, separation, depth, repeatability, recovery and accuracy of target identification.
Tied in with the operator and walking over the target. Dumb luck, it not the first time that someone has bought a cheap detector and found a hoard on their first session.
Comment