From 077c00917bc36d9fa0a9a9995fb3e198eca83640 Mon Sep 17 00:00:00 2001 From: Rob Riggs Date: Sun, 23 Jan 2022 14:31:42 -0600 Subject: [PATCH] Update FT-991 config. --- m17/m17-configuration.ipynb | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/m17/m17-configuration.ipynb b/m17/m17-configuration.ipynb index f44ab21..31fbf1e 100644 --- a/m17/m17-configuration.ipynb +++ b/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", "\n",