[EE] Speake & Co FGM sensors

[Van Horn, David]

I thought these had gone away, Fat Quarters is defunct as is the Speake & Co site, but I just found this site which has the latest version:
https://www.fgsensors.com/

The output is a square(ish) wave which varies in frequency according to field strength.
Years ago I was detecting and classifying vehicles at 20 meters or so with the FGM-1 sensors.

Just FYI

--
David VanHorn
Lead Hardware Engineer

Backcountry Access, Inc.
2820 Wilderness Pl, Unit H
Boulder, CO 80301 USA
phone: [phone] x110
email: ***@backcountryaccess.com<mailto:***@backcountryaccess.com>