diff --git a/src/CHANGES.md b/src/CHANGES.md
index 7f544e69..651d068d 100644
--- a/src/CHANGES.md
+++ b/src/CHANGES.md
@@ -1,5 +1,9 @@
 # Development Changes
 
+## 0.8.67 - 2024-01-29
+* fix HMS frequency
+* fix display of inverter id in serial log (was displayed twice)
+
 ## 0.8.66 - 2024-01-28
 * added support for other regions - untested #1271
 * fix generation of DTU-ID; was computed twice without reset if two radios are enabled
@@ -169,7 +173,7 @@
 
 ## 0.8.37 - 2023-12-30
 * added grid profiles
-* format version of grid profile 
+* format version of grid profile
 
 # RELEASE 0.8.36 - 2023-12-30
 
diff --git a/src/defines.h b/src/defines.h
index 786908d0..4ff2fc1e 100644
--- a/src/defines.h
+++ b/src/defines.h
@@ -13,7 +13,7 @@
 //-------------------------------------
 #define VERSION_MAJOR       0
 #define VERSION_MINOR       8
-#define VERSION_PATCH       66
+#define VERSION_PATCH       67
 
 //-------------------------------------
 typedef struct {
diff --git a/src/hm/Communication.h b/src/hm/Communication.h
index 132faeb8..396a98a5 100644
--- a/src/hm/Communication.h
+++ b/src/hm/Communication.h
@@ -502,7 +502,6 @@ class Communication : public CommQueue<> {
             int8_t rssi = -127;
             uint8_t len = 0;
 
-            DPRINT_IVID(DBG_INFO, q->iv->id);
             for(uint8_t i = 0; i < mMaxFrameId; i++) {
                 if(mLocalBuf[i].len + len > MAX_BUFFER) {
                     DPRINTLN(DBG_ERROR, F("payload buffer to small!"));
diff --git a/src/hms/cmt2300a.h b/src/hms/cmt2300a.h
index 524472f0..3cdc2660 100644
--- a/src/hms/cmt2300a.h
+++ b/src/hms/cmt2300a.h
@@ -360,7 +360,7 @@ class Cmt2300a {
             if((freqKhz < range.first) || (freqKhz > range.second))
                 return 0xff; // error
 
-            return (freqKhz - getBaseFreqMhz()) / FREQ_STEP_KHZ;
+            return (freqKhz - getBaseFreqMhz() * 1000) / FREQ_STEP_KHZ;
         }
 
         inline void switchChannel(uint8_t ch) {
@@ -369,9 +369,9 @@ class Cmt2300a {
 
         inline uint32_t getFreqKhz(void) {
             if(0xff != mRqstCh)
-                return getBaseFreqMhz() + (mRqstCh * FREQ_STEP_KHZ);
+                return getBaseFreqMhz() * 1000 + (mRqstCh * FREQ_STEP_KHZ);
             else
-                return getBaseFreqMhz() + (mCurCh * FREQ_STEP_KHZ);
+                return getBaseFreqMhz() * 1000 + (mCurCh * FREQ_STEP_KHZ);
         }
 
         uint8_t getCurrentChannel(void) {