diff --git a/hosts/radiobert/default.nix b/hosts/radiobert/default.nix
index 7112a66f..973e2daf 100644
--- a/hosts/radiobert/default.nix
+++ b/hosts/radiobert/default.nix
@@ -131,5 +131,14 @@
     '';
   };
 
+  systemd.extraConfig = ''
+    # Keep cores 2-3 exclusive for SDR processing
+    CPUAffinity=0-1
+  '';
+  systemd.services = {
+    soapysdr-server.serviceConfig.CPUAffinity = "2-2";
+    readsdb.serviceConfig.CPUAffinity = "3-3";
+  };
+
   system.stateVersion = "21.05"; # Did you read the comment?
 }