Observations of HF signals propagated over high latitude paths
Why this work is in the frame
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Bibliographic record
Abstract
A frequency agile transmitter has been installed within the polar cap at Clyde River, NWT, Canada (70 degrees N, 69 degrees W). Five receiving and data logging systems have been deployed to provide four transauroral paths and one path contained entirely within the polar cap region. Results from two receiving sites at Leicester, UK, and Boston, USA, during a one-month experimental campaign undertaken from 16 January to 10 February 1989, are used to illustrate some of the influences of the auroral oval and mid-latitude trough on HF propagation. The trough controls the time at which signals with frequencies between 18 and 23 MHz are lost in the evening. The auroral oval can give rise to night-time propagation of signals on frequencies much higher than the usual night-time MUF.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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 it