[Elecraft] KPA500 and SWR above 1.5:1

[Geoffrey Downs]

The manual says the bargraph shows green ("normal") up to an SWR of 1.5:1, 
yellow ("marginal") from 1.5:1 to 2.1:1 and red ("excessive") above that. 
Does this mean no inhibition of output  by the protection system (and no 
need for it) up to 1.5:1 but progressive reduction of output above? If so, 
will the amp operate without damage in the yellow zone and what % 
reductions in output might be expected up to 2.1:1? Also in what conditions 
of SWR does the intelligent 2.5db output reduction apply; and at what SWR 
does output shut off altogether - ie the REFL HI fault condition.

Apologies if these questions have already been answered, in which case 
perhaps someone could refer me to where. I have looked at the manual and 
searched back on the reflector without success.

73 to all

Geoff
G3UCK