diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/rtkcluster/RtkClusterService.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/rtkcluster/RtkClusterService.java
index afcd96dc..6e4b833d 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/rtkcluster/RtkClusterService.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/rtkcluster/RtkClusterService.java
@@ -216,13 +216,13 @@ public class RtkClusterService implements ApplicationRunner {
                         // OUT connection (NMEA etc.)
                         closeQuietly(outConn);
                         outConn = s;
-                        LOGGER.info("Endpoint {} OUT connected", port);
+                        LOGGER.debug("Endpoint {} OUT connected", port);
                         pumpOut(outConn, probe, n);
                     } else {
                         // IN connection (RTCM sink)
                         closeQuietly(inConn);
                         inConn = s;
-                        LOGGER.info("Endpoint {} IN connected", port);
+                        LOGGER.debug("Endpoint {} IN connected", port);
                     }
                 } catch (IOException e) {
                     LOGGER.warn("classifyConnection error: {}", e.getMessage());
@@ -247,16 +247,16 @@ public class RtkClusterService implements ApplicationRunner {
                     int read;
                     // deliver first classified bytes if any
                     if (firstLen > 0) {
-                        String preview = new String(firstBuf, 0, Math.min(firstLen, 64), StandardCharsets.US_ASCII).replaceAll("\n", "\\n");
-                        LOGGER.info("[OUT:{}] {} bytes: {}...", port, firstLen, preview);
+                        String preview = new String(firstBuf, 0, firstLen, StandardCharsets.US_ASCII).replaceAll("\n", "\\n");
+                        LOGGER.info("[OUT:{}] {}", port, preview);
                     }
                     while ((read = in.read(buf)) != -1) {
                         // For now, just log a short preview
-                        String preview = new String(buf, 0, Math.min(read, 64), StandardCharsets.US_ASCII).replaceAll("\n", "\\n");
-                        LOGGER.info("[OUT:{}] {} bytes: {}...", port, read, preview);
+                        String preview = new String(buf, 0, read, StandardCharsets.US_ASCII).replaceAll("\n", "\\n");
+                        LOGGER.info("[OUT:{}] {}", port, preview);
                     }
                 } catch (IOException e) {
-                    LOGGER.info("OUT connection closed on {}: {}", port, e.getMessage());
+                    LOGGER.debug("OUT connection closed on {}: {}", port, e.getMessage());
                 } finally {
                     if (outConn == s) outConn = null;
                     closeQuietly(s);