• Receive only (so far)
• Uploads spots to wsprnet.org when online
• Bonus userland improvements

1. Download the compressed SD card image.
2. Decompress the compressed image. For example: xz -d x6100-wspr-0.9.8.img.xz.
3. Write the decompressed image to disk. For example, if your SD card was /dev/sdb:

$ sudo dd if=x6100-wspr-0.9.8.img of=/dev/sdb bs=4k
160768+0 records in
160768+0 records out
658505728 bytes (659 MB, 628 MiB) copied, 9.7834 s, 67.3 MB/s

Boot the X6100 with that SD card in the CARD slot.

Steps 1-4 can be done on another device by mounting partition 2 of the SD card.

1. Copy /root/spotter-loop.conf.template to /root/spotter-loop.conf.
2. Update at least 'CALL' and 'GRID' in that file.
3. Copy /etc/NetworkManager/system-connections/default.nmconnection.template to /etc/NetworkManager/system-connections/default.nmconnection.
4. Set WiFi SSID and PSK in that file.
5. If you did all that through the serial console, reboot.
6. Once connected to wifi, sync time with /etc/init.d/S48sntpd start.

Step 6 is only required if the system clock is wrong. The network is usually not up in time for that init script, so sntpd has to be started manually.

This will take over an hour and several dozen gigabytes of disk space.

1. wget https://buildroot.org/downloads/buildroot-2020.02.9.tar.gz
2. git clone https://github.com/sstjohn/x6100-wspr.git
3. tar xf buildroot-2020.02.9.tar.gz
4. make -C buildroot-2020.02.9 O=../br2_build BR2_EXTERNAL=../x6100-wspr/br2_external x6100-wspr_defconfig
5. cd br2_build; make -j$(nproc)
6. Produced image output to br2_build/images/rootfs.tar.