Help

[smi916]

Hi ,
somebidy can help me to build a coil for this detector(find in forum)?I just would like to know how many turn and diameter and some suggest to realized it.
Many thanks.

[Carl-NC]

The schematic lists the info you want. TX coil is 70-75 turns of 0.45mm wire (~25 AWG) and RX coil is 160 turns of 0.27mm wire (~30 AWG). Unfortunately, coil diameters are not given. I suspect that it's not terribly critical, try 8-10 inches for the TX and half that for the RX. Check out Dave Emery's concentric coil article for more details.

- Carl

[smi916]

Carl ,
many thanks to reply me; what do yuo think about this project?
I want to try it just for hobby,anyway if it working well a will so happy!!