diff --git a/README.md b/README.md
index 2246657..79fcdee 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ Note that unlike the main calibration, power calibration frequencies do not need
 
 You need a few things:
 - [Analog Devices Pluto SDR](https://www.analog.com/en/resources/evaluation-hardware-and-software/evaluation-boards-kits/adalm-pluto.html).
-Any variant of the Pluto *should* work too such as the [Pluto+](https://github.com/plutoplus/plutoplus?tab=readme-ov-file)
+Any variant of the Pluto *should* work too such as the [Pluto+](https://github.com/plutoplus/plutoplus?tab=readme-ov-file) however I have only tested with the basic flavor.
 - Directional couplers (1 per port up to 4 ports).
 I have been using [AAMCS-UDC-0.5G-18G-10dB-Sf](http://www.aa-mcs.com/wp-content/uploads/documents/AAMCS-UDC-0.5G-18G-10dB-Sf.pdf)
 - Charon switch board - coming soon.