[Elecraft] receiver guard

[NOEL POULIN]

Hello,
I am going to use my SDR-IQ with my K3S ..KXV3A RX ANT IN and RX ANT OUT.
Will be using a plitter.
I want to know if I will have to add a RECEIVER GUARD  at the SR-IQ to 
be safer...
My SDR-IQ will be using the K3s transmit antennas for receiving of 
course....
Will it be safer to add a receiver guard at the input of the SDR-IQ 
....to protect it from rf, when transmitting????
Advices will be welcome.
Thanks
Noel