I have built one each for 40, 20, and 18 but I have added a DDS ufo to all of mine.
After a while I have been obsessed by the HISS. from the audio amp and I want to put a end to that noise. My goal now is no more hiss !! Any one have ideas of what chip to use that does not HISS.

I like the radio very much, Fun to build and a thrill to make first contact.
I have built the 1 watt versions also and have made many contacts with them.