[CQ-Contest] RF limiter

[pc2a at pi4cc.nl]

Hi,

We will upgrade our station with more antennas for TX and  RX.
With the K3 we will try diversity RX and that need a bite more front-end 
protection (just in case)

I have a Ice 196 and this is so simple. I like to build this RF limiter 
in the stackmach with a output to the second receiver
The trick are those anti paralell diodes. But what kind of diodes are used?
Is there a PDF for this model?

Peter
PC2A
www.pi4cc.nl