Over on his YouTube channel, Aaron, creator of DragonOS and the WarDragon kit has uploaded a video showing the Blah2 passive radar software working with an SDRplay RSPDuo. In the video Aaron shows some setup steps before showing the passive radar range-doppler graph.
Blah2 is passive radar software that appears to be inspired by the KrakenSDR passive software that was removed for regulatory reasons. We note that it is legal for others to publish open source passive radar software, but KrakenSDR cannot legally publish their own open source passive radar software because it would be tied to their own physical product. Providing code would mean they essentially sell an off the shelf passive radar product which is restricted.
The notes in Blah2 specifiy that it currently only supports the SDRplay RSPduo and USRP devices, but in the future they are looking to add support for the KrakenSDR and modified RTL-SDR and HackRF hardware.
Aaron also briefly demonstrated the related adsbdd software, from the same author as Blah2. This software allows a user to convert ADS-B data to delay-doppler truth. Essentially allowing you to confirm is an aircraft position determined via ADS-B is on the range-doppler ellipse determined via passive radar. In the future the author hopes to be able to plot all aircraft in a 2D delay-doppler space graph.
A few days ago the programmers of the popular Mayhem firmware for the HackRF Portapack released version V2.0.0. The new version includes multiple improvements specified in the release text below.
We are super excited to share the what's new with v2.0.0
- Apps are now stored on the MicroSD Card so we can fit more apps on the device.
- New file format that contains both the firmware and SD card apps to make updating super easy. (mayhem_v2.0.0_OCI.ppfw.tar)
- Working USB serial communication when in Portapack mode
- USB serial web interface (see details a few lines later)
- One click update using https://hackrf.app
- New USB serial commands
- A bunch of bug fixes (see the changelog for the various bugs)
- Updated 'Settings' (app settings editor, encoder options, date ,config mode, brightness...)
- BLE apps
- Raw auto record and replay (see Recon in wiki)
A brand new website to manage your device, https://hackrf.app
- Can work offline once loaded first (Offline PWA)
- Remote screen support
- Remote file system access
- One click firmware updates
- Requires a chromium based browser to work
A new organization, Mayhem: https://github.com/portapack-mayhem where you can fin the sources of all our projects! Pull Requests are welcome :-)
Over on the Tech Minds YouTube channel Matt has uploaded a video showing off the new features of the Mayhem V2.0.0 firmware, and also showing how to install it. In the video Matt shows the new SD card browsing features, the new easy firmware one click update procedure, and the new web UI.