I've setup quite a light mobile FT-8 setup in case you are interested.
I'm using the FT8CN Android app and a truSDX radio. USB cable from the radio into my phone powers the radio as well as sends/receives the audio.
For antenna I'm just using a hamstick on the roof.
This only puts out about half a watt but I was getting out about 2500-3000km away. You could then have an alternative power source like a battery to get around 5 watts.
I'm using the FT8CN Android app and a truSDX radio. USB cable from the radio into my phone powers the radio as well as sends/receives the audio.
For antenna I'm just using a hamstick on the roof.
This only puts out about half a watt but I was getting out about 2500-3000km away. You could then have an alternative power source like a battery to get around 5 watts.