Domyślny zaznaczony przycisk opcji
<input type="radio" name="imgsel" value="" checked>
SteDeus
<input type="radio" name="imgsel" value="" checked>
<input type="radio" id="huey" name="drone" value="huey"
checked>
<!-- https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/radio-->
checked="checked"