It really depends who tunes your radio as far as what it will do for output.
I have one here right now that I am seeing 200 am modulating and 185 ssb modulating.
But....If you want the radio to perform really good, then you must have a good aligment preformed. Then when this is done, you will then probably see a little less output, but this will be good, for the radio will sure work better for you.
Send it to DTB radio here on the forum if you wish to have a tune up....the radio will then come back doing around 185 AM & 145-155 on SSB or there abouts. But everyone that will listen to it will like much better.
As far as being stable you ask.....if they weren't stable, I wouldn't own them!