Detuning free-standing towers at MF frequencies
Why this work is in the frame
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Bibliographic record
Abstract
Many commercial AM broadcast antennas must maintain a directional pattern to avoid interference with other stations on the same frequency. Scattering of the station's signal can lead to field strengths in excess of those stipulated by the station's licence; free-standing towers scatter the signal effectively if the tower height is comparable to the quarter-wavelength. In the paper, means of suppressing the scattered field from a free-standing power line tower by installing a so-called detuning device on the tower are investigated. Several detuner designs are studied by measuring the base impedance of a scale model tower on a ground plane. The measured results were reproduced with a computer model of the tower and detuner. The computer model was then used to study scattering from the detuned tower to determine the degree of reduction in the scattered field and the bandwidth over which an adequate reduction is achieved. Some standard detuner designs and some novel designs are compared.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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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 | 0.001 | 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