I think you can use 5W eirp on 630 meter, at least that's consistent with my band plan :)

It looks that for 600m you could use a vertical wire with a lot of radials :) Maybe with a balloon?

But 2200 would be fun indeed.

huh, 5W eirp. Either that changed or my memories did. cool. I also don't remember the 500W PEP ceiling, either. I thought you could drive it however hard you wanted to as long as your radiator didn't exceed [what i thought was 1000] 5000mW eirp.