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diff --git a/README.md b/README.md
index fd79271..da972f8 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,8 @@ Open questions
 Issues
 ======
 
+* VHF LO seems terribly noisy, try with external XTAL LO board
+* Coupling between VHF filter coils was way too large
 * SEQ0 is used in inverted-logic in baseband, and noninverted for power relay
   * Due to inconsistent naming
   * Ugly fix on K603 side, use SEQ0n, SEQ1, SEQ2