# ADU-12e

*project to be finished in November 2025*

The ADU-12e is a "stacked version" of ADU-10e and ADU-11e.

```{figure} ../../media/adu-11e/ADU-11e.jpg
:width: 60%
:align: center
:alt: ADU-12e

ADU-12e (shown here as ADU-11e)
```

## Introduction
The system is designed for broadband magnetotelluric (MT) and audio-magnetotelluric (AMT) measurements;
for all who need LF data *and* HF data in one system.<br>
LF means here more than 100 s (or depth greater than 5-7 km). <br>
For most surveys for minerals and mining this is not the case, take the [ADU-11e](../adu-11e/adu-11e.md) here.<br>
For scientific applications where depths of 20 km and more are needed, this is the right choice.

The LF part (aka [ADU-10e](../adu-10e/adu-10e.md) ) runs independently from the HF part (aka [ADU-11e](../adu-11e/adu-11e.md) ); a typical setup is MFS-06e coils and SHFT-02e/3e sensors.
Or fluxgate FGS-04e with MFS-07e coils.

- < 6 W power consumption
- simultaneous recording of AMT & MT with dedicated sensors
- continuous streaming of [atss](https://github.com/bfrmtx/MTHotel) data for remote logging

The systems writes standard *ats* files as well as streamed double data [atss](https://github.com/bfrmtx/MTHotel) 
(Matlab, Python/Julia NumPy array compatible with JSON data header)

## Note
A more efficient way to record LF and HF data is to use two separate systems, one for LF and one for HF. <br>
While recording LF data, the HF/MF system you can record 3 - 4 stations in parallel. <br>

You can use [syncthing](https://syncthing.net/), rsync and WebDAV to transfer data to your office.