[Elecraft] K2 Absolute max RX levels?

[Brendan Minish]

I have recently installed a matrix switch (Array solutions six pak) this 
allows me to send any of my antennas to either of my radios. Obviously 
there is a need to be mindful of antenna interactions

What are the maximum safe input levels that the K2 can handle before I run 
the risk of doing damage.

For example on my 160m antenna I see about 1.6w into a 50 Ohm load when 
transmitting with 100w on my 80m antenna. I assume putting 1.6w on the 
antenna jack of my K2 would not be a good idea but is, say 100mW ok ?

Any Idea what a safe maximum for an Icom 756pro2 might be?

I have measured the interaction between all my antennas and most are ok 
(less than 10mW for 100W tx on other band)
I measured using a 100 Mhz scope and a 50 Ohm load on the receive antennas 
with 100w TX on the TX antenna.

I am also interested in any suggestions on filtering  to reduce the 
interactions to safe levels

Brendan EI6IZ