[Elecraft] Receiver Damage from another Close Station?

[w0ih]

My next door neighbor is a ham and recently upgraded to a Icom 7700, 200
watt.

The antennas for my K3 are pretty close to his.  I have a set of dipoles
(160, 75, 60 that share a common feedline) that are about 30 feet off one
leg from the neighbor's HyTower (75 thru 10 full size vertical).  I have a
TH11DX up at 50 feet (boom is loaded for 40 meters also, separate feedline)
and he has a TH5DX at very close to the same level, directly east of my
tower, about 100 feet away.

I have a Heathkit SB 220 amp (2 kw input?).  Neighbor runs barefoot for now.

So, my question is, do I need to be concerned about damage to either rig? 
I'm assuming that we can't operate the same bands at the same time.  Our
operating schedules seem to be very different for now.  But I'm wondering if
there could be input damage from one operating on any band, even if the rig
is off.   

I was wondering if the K3 input is grounded through a relay when turned off,
and similarly on the 7700.

Any thoughts?

Mike

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