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34 lines
1003 B
Python
34 lines
1003 B
Python
from core.constants import BANDS
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HF_BANDS = [b for b in BANDS if b.is_ham_hf]
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def _latest(d):
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return d[max(d.keys())] if d else None
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def compute_band_states(fof2_dict, muf_dict, luf_dict):
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"""Compute HF band states from the latest foF2, MUF and LUF values.
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States:
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Closed if band frequency is above MUF or below LUF (if known)
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Short if band frequency is >= LUF and < foF2 (good for NVIS)
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Long if band frequency is >= foF2 and < MUF (good for DX)
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"""
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fof2 = _latest(fof2_dict)
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muf = _latest(muf_dict)
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luf = _latest(luf_dict) if luf_dict else None
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if fof2 is None or muf is None:
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return {}
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band_states = {}
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for band in HF_BANDS:
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freq = band.start_freq / 1_000_000
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if freq > muf or (luf is not None and freq < luf):
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band_states[band.name] = "Closed"
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elif freq < fof2:
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band_states[band.name] = "Short"
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else:
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band_states[band.name] = "Long"
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return band_states
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