--- ax25socket.cpp.orig	2003-05-29 21:26:33.000000000 +0300
+++ ax25socket.cpp	2005-05-05 23:43:59.000000000 +0300
@@ -288,8 +288,12 @@
     // No rewriting for mic-e frames because aprsd does this later
     sprintf ((char*)buf1, "%s>%s%s:", from, to, digis);
     l = strlen ((char*)buf1);
-    for (i = 0; i < len; i++, l++) {
-        buf1[l] = (isprint (buf[i])) ? buf[i] : ' ';    // keep it clean
+    for (i = 0; i < len; i++) {
+        /* preserve mic-e non-printable characters. */
+        if (buf[i] >= 0x1c && buf[i] <= 0x7f) {
+            buf1[l] = buf[i];
+            l++;
+        }
     }
 
     buf1[l++] = 0x0d;