> It already exists in at least the Array Solutions watt meter. I have > two of them protecting both amps. Breaks the ptt line very quickly and > has a choice of sense parameters. Mine are set for 2.5:1 vswr trip. 73 > bob de w9ge Also in the Telepost LP-100 Vector Wattmeter: http://www.telepostinc.com/ Chuck, N4NM