/wessex-websdr-cfg

Primary LanguageJavaScript

websdr-cfg

Webpages

Webpages for the websdr are served by nginx out of the 'htdocs/' directory.

'pub' and 'pub2' directories are required to be in this location by 'websdr64' but the HTML/JS/CSS files contained are not used.

WebSDR Configuration

WebSDR server configuration is in the file websdr.cfg

RTL_TCP configurations can be modified in the rtltcp_xxxx.sh scripts.

To apply either of the above you'll need to restart the websdr with:

sudo systemctl restart websdr`

(There may be a few seconds delay before the websdr server is available again, as it initializes all the bands.)

Initial Server setup

Dell Optiplex 3070 Hardware

  • Hold F2 on startup to enter BIOS configuration
    • Ensure that 'System Configuration' -> 'SATA Operation' is set to "AHCI"
    • Ensure that 'Power Management' -> 'On AC Recovery' is set to "Power On"
    • Exit, applying settings.
  • Hold F12 on reboot to enter boot menu
    • Select UEFI: <USB Disk name> to boot from Ubuntu install disk

Ubuntu Server 22.04 Installer

  • Ensure machine is attached to a DHCP network
  • English (UK)
  • Update to new installer (if asked)
  • Select 'Ubuntu Server', Tick 'Search for third-party drivers'
  • (Use default network settings)
  • Storage: Use Entire Disk
  • Profile
    • Your Name / Username: "websdr"
    • Hostname: "optiplex3070-websdr"
    • Password: "<choose a password>"
  • SSH Setup: Tick 'Install OpenSSH Server'
  • Server Snaps: (none applicable)
  • (Install now runs)

Operating System Setup (via SSH)

sudo apt update && sudo apt dist-upgrade
sudo apt autoremove
sudo apt install git htop curl wget build-essential cmake pkg-config vim
sudo reboot

Custom FFTW3 (with AVX2 support)

wget 'https://www.fftw.org/fftw-3.3.10.tar.gz'
tar -xzf fftw-3.3.10.tar.gz 
cd fftw-3.3.10/
./configure --enable-float --enable-threads --enable-shared --enable-sse --enable-sse2 --enable-avx --enable-avx2 --enable-avx-128-fma --enable-generic-simd128 --enable-generic-simd256
make -j4
sudo make install
sudo ldconfig

WebSDR dependencies

sudo apt install libasound2
sudo dpkg -i dependencies/libpng12-0_1.2.54-6_amd64.deb dependencies/libssl1.0.0_1.0.2n-1ubuntu5_amd64.deb

Nginx Install

Install mainline repo from: http://nginx.org/en/linux_packages.html#Ubuntu

Install config:

sudo cp -fv nginx-conf/nginx.conf /etc/nginx/nginx.conf
sudo systemctl restart nginx

Custom rtl_tcp (with frequency lock)

sudo apt install git build-essential cmake libusb-1.0-0-dev
git clone https://github.com/philcrump/librtlsdr.git
cd librtlsdr
mkdir build
cd build
cmake ../ -DINSTALL_UDEV_RULES=ON -DDETACH_KERNEL_DRIVER=ON
make
sudo make install
sudo ldconfig

Authors

Phil Crump phil@philcrump.co.uk