Inductance of DD Coil

[Geo]

Hi. I have a 10in DD coil from a MD5002 detector. I want to try the bandido schematic inside the MD5002 together with the 10 in coil. I measured the coil with an analog inductance meter who i have and i found : Rx 3 mH 45 Ohm and Tx 3..4 uH and 4.6 Ohm. The detector works at 6.99 Khz and has a good sensitivity. Now can someone tell me why the Tx coil has so little inductance? Can i connect it with the Bandido detector?

Thanks

Geo