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HF band; high-frequency band | |||
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HF band (частоты 3–30 МГц) | |||
HFB (High Frequency Bandwidth eugeene1979) |
ВЧ-диапазон : 26 phrases in 7 subjects |
Aviation | 1 |
Communications | 1 |
Electronics | 5 |
Mass media | 1 |
Military | 7 |
Technology | 5 |
Telecommunications | 6 |