Effects of the April 8, 2024 total solar eclipse upon reception of North American signals in the medium-wave broadcast band, using software defined radio files recorded in Phoenix, AZ, USA

Recorded by: Burke Baumann, KF7NP Grid square of location recorded: DM33wp Maximum obscuration of the sun was 64% at 1820UT on 8 April 2024. These data files are recordings of the entire medium wave broadcast band (535-1705kHz) made during the total solar eclipse of 8 April 2024 from 1650 UT to 1919UT from Phoenix, AZ, USA. They are part of a set of such recordings made from 1700 UT on 7 April, 2024 to 2200 UT on 9 April,2024. Data Quality: Generally good, but there are weak spurious carriers, plus many short (~10 seconds?) data droputs. Data files are .wav format, but the archived files are .zip, with about five .wav files packaged together in each .zip file, using the prefix “KF7NP-wideband_140_2060kHz_ “. The recordings not included here are available by contacting HamSCI at [e-mail], if you require this data. Antenna: Hustler 20m mobile vertical; There was an inline choke balun in the feed line Receiver: ICOM IC-7610 SDR transceiver (16-bit data) with 0dB front end gain / attenuation using HDSDR software. It is believed the IC-7610 has a low pass filter with a cutoff at 1.6 MHz so signals above this may be attenuated. Hardware was locked to a 10 MHz homebrew GPSDO reference. This was always accurate to better than 0.1 ppb. Recording computer time set by Dimension 4 NTP. (time and date in recordings used UTC)