Daniel
1) OK, I understand. In the article in Feb CQ the operator was running just CW so 2 watts is OK.
I've never got much more than 1 watt, do not expect more.
2) There's no way to put a sound card in my laptop. Are you saying that one of these external USD-to-stereo audio boxes won't work?
You are describing what is normally called a USB "Sound Card" or just USB audio, it must be stereo.
3) OK on WSJT software being convoluted. Is there a simpler way to run FT8?
No. You must use SDR software. It has to be connected to WSJT-X or whatever by a virtual audio cable.
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73 Alan G4ZFQ