Update README.md

README.md

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 A pcb for end fed antennas (EFHW, random wire) for SOTA, POTA,... xOTA
 ![alt text](https://github.com/DG1JAN/xOTA-Antenna/blob/main/xOTA_Ant_3D_Pic1.png)
 
+![alt text](https://github.com/DG1JAN/xOTA-Antenna/blob/main/xOTA-Antenna_example_beta.jpg)
+*pictures are from prev. proto design, will be updated with v1.0 soon.
 
 BOM 
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