Measurements with internal and external reference clock.

The section https://www.satdump.org/posts/1.1.4-release/#the-switch-to-jemalloc sounds interesting, perhaps this could be useful for Gpredict?

Portable and heterogeneously-accelerated graphical visualization for radio signals.
Features
🦑 Meant to be extremely portable (NVIDIA, Apple M1/M2, Raspberry Pi, AMD).
🖼️ Meant to support the most common heterogeneous APIs (CUDA, Vulkan, Metal, WebGPU).
🔋 Runtime configurable hardware accelerated heterogeneous computing.
🧳 Compatible with GNU Radio with gr-cyber.
Found on https://www.rtl-sdr.com/rfnm-now-available-for-pre-order/

See also the PiSDR image, an MIT-licensed distribution for the raspberry π from the same author https://github.com/luigifcruz/pisdr-image

See also the other presentations of this conference.

Can this function be used to run radioclk http://www.buzzard.me.uk/jonathan/radioclock.html from a GPI pin instead of DCD, DSR, CTS?

Experiments tracking DCF77 and MSF, using amplitude, phase and correlation to measure time with respect to GPS.

Recently a DCF77 receiver and decoder program based on Python and GNU Radio has been uploaded to GitHub
https://github.com/henningM1r/gr_DCF77_Receiver
by henningM1r. It includes a simulator written in Python so you can simulate your own DCF77 signal for testing the receiver too.

Currently the decoder has been tested to work with an Airspy HF+ Discovery SDR, but it should work with any SDR capable of receiver 77.5 kHz if the GNU Radio source block is changed out.

Found via https://www.meteornews.net/2022/10/26/uk-radio-meteor-beacon-project and https://www.raspberrypi.com/news/meteor-beacon-for-astronomy/

Pocket SDR is an open-source GNSS (Global Navigation Satellite System) receiver based on SDR (software defined radio) technology. It consists of a RF front-end device, some utilities for the device and GNSS-SDR APs (application programs) written in Python and C. It supports almost all signals for GPS, GLONASS, Galileo, QZSS, BeiDou, NavIC and SBAS.
From Tomoji Takasu, the author of rtklib.
https://www.rtklib.com/rtklib_sdr.htm has a nice table describing GNSS signals.



See also https://s-taka.org/en/awesome-pocketsdr-pocket_trk/ for several blog articles about pocketSDR.