Update FT-991 config.

m17/m17-configuration.ipynb

@@ -437,7 +437,7 @@
     "\n",
     "Press the *Menu* button and adjust the following settings to use the packet data port for M17:\n",
     "\n",
-    " * Set `75 FM OUT LEVEL` to `90` (higher values result in distortion)\n",
+    " * Set `75 FM OUT LEVEL` to `100`\n",
     " * Set `76 FM PKT PTT SELECT` to `DAKY`\n",
     " * Set `77 FM PKT PORT SELECT` to `DATA`\n",
     " * Set `78 FM PKT TX GAIN` to `64`\n",
@@ -449,12 +449,20 @@
     "\n",
     "### TNC Setup Steps\n",
     "\n",
-    "In *Audio Input Settings*, set the `Input Gain` value to 1.\n",
+    "In *Audio Input Settings*, set the `Input Gain` value to 3.\n",
     "\n",
     "In *Modem Settings*, enable the `TX Reverse Polarity` option for this radio.\n",
     "\n",
     "### Known Issues\n",
     "\n",
+    "#### Low Output Level\n",
+    "\n",
+    "The demodulated baseband signal from the *DATA-FM* mode is very low.  It\n",
+    "is an order of magnitude lower than in pure *FM* mode.  There is a lot of\n",
+    "high-frequency noise in the signal.\n",
+    "\n",
+    "#### Frequency Stability\n",
+    "\n",
     "On my unit, the frequency stability when it first starts transmitting is rather poor.\n",
     "\n",
     "<table>\n",