Maximum Upconverter Transmit Power

[opendous]

The Upconverter is designed for picking up signals below +1dBm (~0.001W) and should withstand up to +20dBm (0.1W) continuously and +30dBm (1W) peaks taking into account all the component ratings.

Connecting +43dBm (20W) has almost certainly fried it.  There is a chance only the components closest to the connector you used got fried.  It may be as simple as replacing the closest DC-blocking capacitor and RF switch.
http://www.digikey.com/product-detail/en/LMK212SD104KG-T/587-1134-1-ND
http://www.digikey.com/product-detail/en/AS169-73LF/863-1002-1-ND

> I am trying the upconverter board for the first time with my HF radio.
> I just did something really dumb.  The board was connected to the main
> antenna when I transmitted under low power (maybe 20 Watts).  So, I
> guess the board is fried, right?  I can't see the stations on 40
> meters that I saw before.
> - rchrdm