This one certainly does: http://www.rmitaly.us/index.php?main_page=product_info&products_id=134 (200W amp for 2 meters.) I have one, it's very sophisticated. SWR "protection" was easy since the unit has a built-in directional coupler measuring forward and reflected power; its front-panel LCD indicates drive power, output power, SWR and heatsink temperature. They should "all" do something like that. Actually, some old Tokyo Hy-Power VHF-UHF amps did! -- but they're gone.