NQRduckumentation/source/tutorials/docs/Transcoupler.md

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# Transcoupler
The Transcoupler is used as a passive TX-RX switch.
| <img src="../../_static/tutorials/2_transcoupler.jpg" width=100%> |
|:--:|
| Figure: Picture of the Transcoupler.
It has three different connections:
- TX: Which is usually connected to the OUT port of the Directional Coupler.
- Probe: Which is usually connected to the Probe Coil.
- Preamplifier: Which is usually connected to the LNA.