diff --git a/htdocs/app/Services/AstmMessageService.php b/htdocs/app/Services/AstmMessageService.php
index ae4330bd..cfa50834 100644
--- a/htdocs/app/Services/AstmMessageService.php
+++ b/htdocs/app/Services/AstmMessageService.php
@@ -684,6 +684,21 @@ class AstmMessageService
 
         return $messages;
     }
+    protected function reassembleAstmFrames(string $raw): string
+    {
+        $buffer = '';
+        $frames = preg_split('/\x02\d/', $raw); // STX + sequence number
+
+        foreach ($frames as $frame) {
+            // buang ETX, checksum, EOT
+            $frame = preg_replace('/\x03.*$/s', '', $frame);
+            $frame = preg_replace('/\x04/', '', $frame);
+
+            $buffer .= $frame;
+        }
+
+        return trim($buffer);
+    }
 
     protected function processBDAstmResponse(string $raw, $data): bool
     {
@@ -712,7 +727,7 @@ class AstmMessageService
                 if (str_starts_with($line, 'H|')) {
                     $f = explode('|', $line);
                     $parsed['header'] = [
-                        'sender_name'      => $data->alat,
+                        'sender_name'      => $data->alat ?? ($f[4] ?? 'BD Instrument'),
                         'version_number'   => $f[12] ?? 'V1.0',
                         'message_datetime' => $this->astmToDateTime($f[13] ?? null)
                     ];
@@ -821,9 +836,10 @@ class AstmMessageService
                 $response = $data->rawdt;
                 if ($data->alat == 'BD Mikro 1'){
                     if ($data->no_id != ''){
-                        $messages = $this->splitBDAstmMessages($data->rawdt);
+                        $assembled = $this->reassembleAstmFrames($data->rawdt);
+                        $messages = $this->splitBDAstmMessages($assembled);
                         foreach ($messages as $msg) {
-                            $ok = $this->processBDAstmResponse($msg, $data->alat);
+                            $ok = $this->processBDAstmResponse($msg, $data);
                         }
                         DataListiner::where('urut', $data->urut)->update([
                             'processed' => $ok ? 1 : 9