Configuring digital communications features in SDRangel

Here are some things that I have tried. You should close unneeded channels and features before proceeding. See also the help pages below.
Channel RX plugin help
Feature plugin help

Setup

• Map setup for Channels and Features that can display data on a map.
  • In the SDRangel Preferences menu / My Position, enter your position information.
  • Once the map feature is opened, in map settings, click the Show settings dialog (3 horizontal bars). Ensure that the features you want to display are checked. Choose a Map provider, or use the default.
• DMR/System Fusion
  • Add the DSD Demodulator from the Channels dialogue.
  • Tune to the desired frequency and press Play.
    Set the squelch to open fully when the signal appears.
  • Select the correct baud rate, typically 4.8K for DMR and System Fusion.
    
    • System fusion has only one channel.
    • For DMR, Turn on TDMA Slot 1 and TDMA Slot 2. Click Split TDMA channels... so the DMA channels will be in separate audio channels (L/R). The icon will have 2 speakers facing each other.
      
  • Click the checkbox to the left of the View status text log button (3 horizontal bars) if you wish to activate the status text log. Click the button to view the data.
    Enable Cosine filtering.
    Increasing FMd may improve decoding. I have had good luck with 7.5 KHz.
    
• ADS-B
  • Tune SDRangel to 1090 MHz. Set BW to 5000 KHz, set SR to 4,000,000 S/s and click play. You may need to adjust the gain controls for better sensitivity.
  • In Channels, open ADS-B demodulator. Set BW to about 2.6 M and SR to 4 M. If you have a good antenna. aircraft data should appear in the window.
  • At the bottom of the ADS-B window, expand Map. Scroll down if necessary. The default settings should allow the aircraft to be displayed.
    You may want to undock Channels and enlarge the window.
  • Aircraft locations should appear on the map as they are received.
• APRS with Map
  • In the SDRangel Preferences menu / My Position, enter your position information.
  • In Channels, open Packet Demodulator. If you open more than one Packet Demodulator, all data will go to the APRS feature. Only APRS packets will appear. APRS packets have PID f0 and the data starts with: ! Or @.
    Tune to an APRS frequency such as 144.39 MHz and click play. You should see data appear in the Packet Demodulator window as signals are received.
  • In Features, open APRS and Map.
    All of the Packet Demodulators will appear in APRS in a combo box pull-down list. Selecting one has no effect.
    APRS has detailed information about the packets received. APRS locations should appear on the map as they are received.
    You may want to undock Features and enlarge the window.
• Weather satellites
  It is not difficult to receive the polar orbiting satellites that operate on the 137 MHz band.
  • Open the Map as shown above.
  • Satellite Tracker
    • In Features, add Satellite tracker.
      Ensure that Satellite Tracker is checked in Map settings.
    • Click Select Satellites (Satellite icon). Add the satellites that you wish to track.
    • To enable Satellite Radio Control, open the Channel(s) that you want for a particular satellite. Set the frequency, etc. for the satellite. In Presets (the star button in the device window), click the circled "+" button and save.
      • Click on the SDRangel icon (SDRangel Control) in Satellite Tracker.
      • Select a satellite from the dropdown box.
      • Click Add device set if your device set is not displayed.
      • Select the desired preset.
      • Under Doppler correction, check the boxes for the channels you want to control.
      • Select Start acquisition on AOS (to start the SDR device)
      • Select Stop acquisition on LOS.
      • Do not select Start/stop file sinks on AOS/LOS unless it has been set up in the preset.
      • Click OK.
      • Click Close.
    • Click Start in the Satellite tracker plugin.
    • Click Update satellite data to ensure the latest data. Do this periodically.
      You can see the AOS (Aquisition of Signal) time, duration, etc.
    • The satellites will appear on the map.
  • APT demod plugin
    Demodulate APT (Automatic Picture Transmission) signals transmitted by NOAA weather satellites.
    • In the SDR device window, click Add channels. Add the APT Demodulator plugin
    • In Satellite Tracker (see that section), identify the next satellite pass.
    • Tune SDRangel and the APT demod plugin offset to the satellite's frequency.
      You should change the frequency to compensate for the doppler shift as it passes over. You can center the demod frequency using the SDR display.
      If you are using Satellite Tracker control, Doppler will be corrected automatically.
    • The picture from the satellite will slowly appear in the APT window. You can save it when it is complete.
    • Polar orbiting weather satellites

      Satellite	APT frequency
      NOAA 15	137.620 MHz
      NOAA 18	137.9125 MHz
      NOAA 19	137.100 MHz

• International Space Station
  The ISS amateur radio communications have several configurations. Not all are active at the same time. Here are some links with information about the ISS.
  International Space Station NASA page
  Contact the ISS - Amateur Radio on the International Space Station (ARISS)
  ISS FAN CLUB – for Fans of ISS and Space Exploration Look for the Current Status of ISS Stations
   
  • Here are some of the signals that you can receive from the ISS.
    • ISS Cross Band Repeater
      • VHF/UHF Repeater Uplink: 145.99 MHz (PL 67 Hz)
      • VHF/UHF Repeater Downlink: 437.80 MHz
    • The following frequencies are currently used for Amateur Radio ISS contacts (QSOs):
      • Voice and SSTV Downlink: 145.80 MHz (Worldwide)
      • Voice Uplink: 144.49 MHz for ITU Regions 2 and 3 (The Americas, and the Pacific and Southern Asia)
      • Voice Uplink: 145.20 MHz for ITU Region 1 (Europe, Russia and Africa)
      • VHF Packet Uplink and Downlink: 145.825 MHz (Worldwide)
      • UHF Packet Uplink and Downlink: 437.550 MHz
  • Open the Map as shown above.
  • Open the Satellite Tracker as shown above. Ensure that the ISS is selected.
  • Setup to receive the packet repeater
    • Set up for APRS as shown above.
    • Tune SDRangel and Packet Demodulator to 145.825 MHz (You may have to adjust 3 or 4 KHz for the Doppler effect).
    • Watch in Satellite Tracker for AOS (Acquisition of Signal)
    • Adjust the frequency so that the marker is centered on the signal. The frequency will be lower as the ISS passes, so you should adjust it from time to time.
      If you are using Satellite Tracker control, Doppler will be corrected automatically.
  • Add to Satellite Tracker control using the current configuration
    • Create a Device Set Preset
      • Click the star button in the device window
      • Click the circled "+" button
      • Select or type in the desired group name.
      • Enter a Description such as "ISS Packet Demod"
      • Click OK.
    • Add to Satellite Radio Control
      • In Satellite Tracker, Click on the SDRangel Control icon.
      • Select a satellite from the dropdown box.
      • Click Add device set if your device set is not displayed.
      • Select your preset.
      • Under Doppler correction, check the boxes for the channels you want to control.
      • Select Start acquisition on AOS (to start the SDR device)
      • Select Stop acquisition on LOS.
      • Do not select Start/stop file sinks on AOS/LOS unless it has been set up in the preset.
      • Click OK.
      • Click Close.
  • Setup to listen to the Voice and SSTV Downlink
    • In Channels, add the NFM Demodulator plugin.
    • Tune SDRangel and NFM Demodulator to 145.80 MHz (Plus 3 or 4 KHz for the Doppler effect).
      If you are using Satellite Tracker control, Doppler will be corrected automatically.
    • You can have both the Packet Demodulator and NFM Demodulator running at the same time.
      • Example setup: Tune the SDRangel Source to 145,700 MHz. Tune the NFM Demodulator to 100,000 Hz. It will receive on 145.825 MHz.
        Tune the Packet Demodulator to 125,000 Hz. It will receive on 145.80 MHz.
        With this setup, you are ready to receive both the data packets and voice. If it is SSTV, routo it to QSSTV, setup on the Utilities page.