Hi Nicolas
Yes i agree with you, none of these devices need any special calibration and you are correct that in some countries what you have to worrie about is the correct frequency to catch the phenomenum.
My crypton demo unit had fall from a desk on the lates earthquake my country sufer, so this damage the wood box. I fixed the box and also had the oportunity to see whats inside of the box.
For respect to Andreas i cant reveal the circuit it self, but i can just said that is not complicated to build it and i can see no special calibration on the device.
Regards
Nelson
For Morgan no problem if you open your PDK. it works normal after opening and that no special dereange operation.
For Andreas No calibration of 3 hours. not special for calibration. normal circuit
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But one things for you both. The LRL Crypton she left work in the world
and PDK's need to find a way to make it work on all countries of the world.
Thank all your devices to improve[/QUOTE]