Effects of the 2024 total solar eclipse upon reception of North American and trans-Atlantic signals in the medium-wave broadcast band, using software defined radio files recorded in Swanton, VT, USA, Part 2.
Bibliographic record
Abstract
Recorded by: Bill Nollman. Grid square of location recorded: FN34jw Maximum obscuration of the sun was 100% at 1928UT 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 1809 to 2041UT from Swanton, VT, USA. They are part of a set of such recordings made from 1945UT on 7 April, 2024 to 0137UT on 9 April, 2024. Data Quality: There is some frequency instability, e.g. >3Hz drift, 8 Apr 2030- 9Apr 0100UT. There is about a 0.5Hz jiggle starting around 1800UT and through the eclipse period. 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 “BNollman-wideband_0_2000kHz_ “. As the total files recorded during the solar eclipse exceeded the Zenodo 50GB limit, the remainder of the dataset is found in “Effects of the total solar eclipse of 2024 upon reception of trans-Atlantic signals in the medium-wave broadcast band, using software defined radio files recorded in Swanton, VT, USA, Part 1”. Please see Part 1 for software and for supporting documentation. The recordings not included here or in Part 1 are available by contacting HamSCI at am-eclipse@hamsci.org, if you require this data. Antenna: Superloop 20'H x 60'L, 245-65 degrees, termination adjusted to near infinite resistance to fill in null. Receiver: Perseus, 0dB front end attenuation, with center frequency 1000kHz, recording 2000kHz wide passband, using Jaguar Pro software. Hardware was not locked to a frequency standard; 690.0000kHz Montreal was used as reference for Jaguar. Recording computer time set by NTP at beginning of session only.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.011 | 0.006 |
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".