Rob Robinett, AI6VN. "WsprDaemon: A low cost, high performance, all band WSPR decoding system". ARRL / TAPR Digital Communications Conference, Detroit, 2019.

WsprDaemon

A robust  decoding and reporting system for  WSPR and FST4W

Rob Robinett, AI6VN. Presenting "Estimating LF-HF band noise while acquiring WSPR spots" on behalf of co-authors Gwyn Griffiths G3ZIL and Glenn Elmore N6GN. ARRL / TAPR Digital Communications Conference, Detroit, 2019.

Scroll to 48min23sec for Rob's presentation within the HamSCi session. Click for pdf of the slides .

Rob Robinett, AI6VN. "Introduction to the KiwiSDR and Bodnar GPSDO". HamSci Workshop, Case Western Reserve University, Cleveland, 2019.

Gwyn Griffiths, G3ZIL, Rob Robinett, AI6VN, Glenn Elmore N6GN et al. "Patterns in received noise: Methods, Observations and Questions". HamSci Web Workshop, University of Scranton, Pa., 2020.

Presentations

Gwyn Griffiths, G3ZIL and Rob Robinett, AI6VN, "Aids to the presentation and analysis of WSPR spots: TimescaleDB database and Grafana". ARRL / TAPR Virtual Digital Communications Conference, 2020.  Click here for pdf files of the slides and the speaking notes.

Scroll to 59min40sec for Gwyn's presentation within the ARRL/TAPR DCC Saturday presentations video.

Gwyn Griffiths, G3ZIL and Rob Robinett, AI6VN, "Visualising propagation to mid-latitudes from a shipboard WSPR transmitter on a passage from 27˚N to 70˚S using the WsprDaemon database, and how to access the data". HamSci Web Workshop, University of Scranton, Pa., 2021. Click for the iPoster and narration.

Gwyn Griffiths, G3ZIL and Glenn Elmore, N6GN, "Contrasting Effects of the 3–5 November 2021 Geomagnetic Storm on Reception in Colorado of WSPR Transmissions from North-Eastern North America and those throm Australia". HamSci Workshop, Huntsville, Alabama, March 2022. Click for the Presentation and the Narration.

Gwyn Griffiths, G3ZIL, Glenn Elmore, N6GN, Rob Robinett, AI6VN, Lynn Rhymes, WB7ABP and John Watrous, K6PZB, "FST4W on the HF bands: Why - What to expect - Equipment - Results ". ARRL/TAPR Digital Communications Conference, Charlotte, N.C., September 2022. Click for the Paper, Presentation, and the Speaking Notes. The full proceedings are availabe via TAPR.

Gwyn Griffiths, G3ZIL and Nigel Squibb, G4HZX "Propagation path analysis on the HF bands using Software Defined Radio and FST4W". SDR Academy , Friedrichshafen, Germany, June 2023. Click for the Presentation slides. Click on the graphic at left and scroll to 1:05:47 for Nigel's talk.  Our paper received the Ulrich Rohde Award for innovative research involving SDRs. The Awards were announced from 02:44:55.

Enter Clicking on the Graphics will bring up a recording of the talk if available.

Gwyn Griffiths, G3ZIL "Identifying 14 MHz propagation modes using FST4W SNR and spectral spread". HamSci Workshop, Scranton, Pa., March 2023. Click for the Presentation and the Speaking Notes.

A paper based on this material presented at HamSci has been accepted by ARRL for publication in QEX. A paper with more details of the technical requirements for precise frequency spread measurements for FST4W and a focus on results from Europe is in preparation.

Rob Robinett AI6VN, Gwyn Griffiths G3ZIL, Glenn Elmore N6GN, Clint Turner KA7OEI and Phil Karn KA9Q "Ham Band WSPR beacons as Sources of Ionosphere Measurements". Click for the Abstract and for the Poster at the American Geophysical Union Fall Meeting, San Francisco, 15 December 2023.

Image courtesy Clint Turner - his complete multi-band transmitter specially designed and built for the HamSci 14 October 2023 Eclipse Study.

Rob Robinett, AI6VN "Creating a low cost high performance FST4W/WSPR beacon site using the RFzero or QPR Labs QDX". SDR Academy , Friedrichshafen, Germany, June 2023.  Click on the graphic at left and scroll to 1:48:05 for Rob's talk.