diff --git a/journal/2024-05-31.md b/journal/2024-05-31.md
index bf0e0c063..830571dfa 100644
--- a/journal/2024-05-31.md
+++ b/journal/2024-05-31.md
@@ -1,2 +1,5 @@
 - [[work]]
 - [[mexico city]]
+- [[spectrum analyzers]]:
+  - [[friture]]
+  - [[spectroid]]