[Premium-Rx] Need Regelverstärker module for Rohde & Schwarz EK 56

[Heinz Breuer]

Hello,

One of my EK 56/4 has an erratic S-meter. I need the Regelverstärker 
module, either the newer EK 56/86 for the EK 56/4 or the older EK 56/69 
for the older EK 56 will work.
I also need an extension board to service my receiver. When the mdules 
are plugged in you can't do any measurements. I am pretty sure that R&S 
had a small extender board to overcome this.

Thanks for your help.

73
Heinz DH2FA, KM5VT