Why Docker?

Docker allows you to deploy software in isolated containers, complete with all their dependencies. This means you don’t need to worry about library conflicts, system packages, or compiling from source—just pull the image and run.

The Docker images provided by jketterl on Docker Hub are built specifically for OpenWebRX and include all necessary requirements out of the box. Images are available for a range of hardware types, and there’s even a comprehensive “full” variant that supports multiple SDR devices.

These images are built for multiple architectures:

• x86_64 (most desktops/laptops)
• armv7l and aarch64 (perfect for Raspberry Pi and similar single-board computers)

Quick Start for Raspberry Pi

If you haven’t installed Docker yet, the easiest way is to run:

curl -sSL https://get.docker.com | sh

Once Docker is installed, you’re just two commands away from getting OpenWebRX up and running:

docker volume create openwebrx-settings
docker run --device /dev/bus/usb -p 8073:8073 \
  -v openwebrx-settings:/var/lib/openwebrx \
  --tmpfs=/tmp/openwebrx \
  jketterl/openwebrx:stable

This setup does the following:

• Maps USB access so your SDR hardware can be used inside the container
• Creates a persistent volume for OpenWebRX settings
• Offloads temporary files to memory (tmpfs) to reduce SD card wear, which is especially important on Raspberry Pi

Docker Compose Option

If you prefer docker-compose, here’s a minimal docker-compose.yml setup:

version: "3"
services:
  openwebrx:
    image: jketterl/openwebrx:stable
    volumes:
      - ./openwebrx/settings:/var/lib/openwebrx
    ports:
      - "8073:8073"
    devices:
      - "/dev/bus/usb/002/002:/dev/bus/usb/002/002"
    tmpfs:
      - "/tmp/openwebrx"

Make sure to adjust the USB device path according to your system. You can check your SDR device’s path using lsusb and ls /dev/bus/usb.

Troubleshooting: USB Device Access

Some users run into issues when the SDR device cannot be accessed inside the Docker container. This usually shows up as an error like:

usb_claim_interface error -6

This happens when the Linux kernel loads its own drivers for your SDR, preventing access from within Docker.

To solve this, you’ll need to blacklist the appropriate kernel modules on your host system. Here’s a quick reference:

On Debian-based systems:

Create a file in /etc/modprobe.d/, such as sdr-blacklist.conf, and add lines like:

blacklist dvb_usb_rtl28xxu

After that, run sudo update-initramfs -u and reboot your system to apply the changes.

Final Notes

This containerized approach to running OpenWebRX is efficient, maintainable, and easy to back up or migrate. It’s ideal for both newcomers and experienced users alike. The Docker images by jketterl are actively maintained and support a variety of SDR hardware, making them a solid choice for any SDR setup.

If you’re looking to get your SDR receiver online with minimal configuration and maximum flexibility, this is the way to go. Visit https://github.com/jketterl/openwebrx

The post OpenWebRX Using Docker on Raspberry Pi and Other Devices appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.

If you’re into park, summit, or other activations like—POTA, SOTA, WWFF, SIOTA—your APRS toolbox has just been supercharged. APSPOT is the most comprehensive self‑spotting gateway available, serving as a singular APRS endpoint that forwards your spot to numerous destinations. No more juggling multiple services or interfaces—just a single tap on your APRS transceiver or APRS software and app sends your activity to parksnpeaks.org, pota.app, SOTAWatch, and beyond.

What Makes APSPOT Exceptional?

• Unified Spotting Endpoint
  Whether you’re working WWFF, SOTA, POTA, or SIOTA, APSPOT simplifies your workflow: send one formatted APRS message and let APSPOT distribute it to all platforms seamlessly
• Smart Message Validation
  APSPOT guides you toward accuracy: if your spot misses a piece or misformats, it responds with precise feedback or usage tips—no guesswork
• Flexible Mode & Quantity Settings
  Recently added, the SPOTS command now supports filtering by mode—like FT8—and controlling how many spots (up to five) you receive

How It Works

1. Format Your Spot Correctly
   Using APRS, message APSPOT in the format: ! <Activity> <Reference> <Frequency> <Mode> <Optional Comment> Example: ! SOTA VK3/VN‑010 7.144 SSB AutumnFieldSummit
2. Receive Instant Feedback
   APSPOT confirms successful delivery—or explains why it didn’t. You’ll know right away.
3. Enjoy Cross‑Platform Spotting
   Your spot is posted automatically across all supported communities—no extra steps on your part

Key Details You Should Know

• Supported Activities: WWFF, SOTA, POTA, SIOTA.
• Syntax Requirements: Include frequency as a decimal (e.g., “7.144”), mode (SSB, CW, FM, DATA), and optional comments
• Activity Verification: For parksnpeaks.org (WWFF), you must be a registered user—APSPOT will check before posting
• Message Limits: Over APRS, you can request 1–5 spots at a time—no more

How to send a SPOT:

POTA

SOTA

WWFF

Beyond APRS: SMS Integration

No APRS radio? No problem. Send a text like this:

!MYCALL POTA US‑1234 14.060 CW CQ_TEST

to the APSPOT SMS gateway, and it handles the rest.

Australia: +61 4 89 905 884
Canada: +1 867 877 2605
United States: +1 866 870 5797

Why APSPOT Matters

• Simplicity: One message, all platforms—APRS, SMS, Winlink.
• Precision: Built‑in validation prevents posting errors.
• Coverage: Supports all major amateur activation programs.
• Community‑Focused: Designed by a ham radio operator for ease and reliability.

What’s on the Horizon?

Developer Josh is expanding APSPOT’s cloud infrastructure—moving it to a Docker‑based service on AWS Fargate. The next milestones include direct SOTAWatch integration (beyond parksnpeaks.org) and broader API support for more spotting systems.

Get Started Today

• Visit https://apspot.radio to explore usage instructions, FAQs, and examples.
• Format and send your first APRS message to APSPOT, or use SMS if APRS isn’t available.
• Ready for on‑the‑road or off‑grid use, APSPOT ensures you stay visible—no matter where your amateur radio adventures take you.

The post APSPOT: Your All-in-One APRS Self‑Spotting Solution appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.