<div dir="ltr"><div dir="ltr"><div><br>Notes from PSWS / TangerineSDR call of 05-25-2020</div><div><br></div><div>1. Tom volunteered to put together a documentation package for the HF small dual channel active broadband loop antenna used in the 2015 ionospheric experiments.</div><div><br></div><div>2. Quite a few folks on the TangerineSDR mail list have not been getting delivery, intermittent delivery, or seeing 16-24 hour delays.</div><div><br></div><div>3. Nathaniel provided a link to a passive gnuradio chirp sounder. The block diagram seems to match TangerineSDR and dual-receive antennas in a receive-only mode.</div><div>* <a href="https://www.sgo.fi/~j/gnu_chirp_sounder/">https://www.sgo.fi/~j/gnu_chirp_sounder/</a></div><div>* <a href="https://scholar.google.com/citations?user=xX7bOtYAAAAJ&hl=en">https://scholar.google.com/citations?user=xX7bOtYAAAAJ&hl=en</a></div><div>* <a href="https://www.rtl-sdr.com/monitoring-ionosondes-and-creating-ionograms-with-a-usrp-and-gnu-chirp-sounder/">https://www.rtl-sdr.com/monitoring-ionosondes-and-creating-ionograms-with-a-usrp-and-gnu-chirp-sounder/</a></div><div>* <a href="http://www.radio-science.net/2019/04/oblique-ionograms-between-sodankyla-and.html">http://www.radio-science.net/2019/04/oblique-ionograms-between-sodankyla-and.html</a></div><div><br></div><div><br></div><div>-- Tom, N5EG</div><div><br></div><div><br></div></div></div>