Effects of the 2024 total solar eclipse upon reception of North American and trans-Atlantic signals in the medium-wave broadcast band, using a Beverage antenna and software defined radio files recorded in Portneuf, QU, Canada.
Bibliographic record
Abstract
Recorded by: Sylvain Naud. Grid square of location recorded: FN46bq Maximum obscuration of the sun was 98.4% at 1930UT 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 1820 to 2043UT from Portneuf, QU, Canada. They are part of a set of such recordings made from 1730 to 2133 UT on 8 April 2024. Data Quality: Only limitations are a number of weak spurious carriers and some short (~15 seconds) data dropouts. 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 “SNaud-wideband_500_1750kHz_ “. The recordings not included here are available by contacting HamSCI at am-eclipse@hamsci.org, if you require this data. Antenna: 400m /1300ft Beverage @ 55 degrees; no termination Receiver: SDRPlay RSP1, with center frequency 1125kHz, recording a 1250kHz wide passband, using SDRUno software. Hardware was not locked to a frequency standard. Recording computer time set by Windows network time.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.009 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".