Search results for frequency
5 possible matches for "frequency"
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Chapter 85 - Electrical machinery and equipment
5 matches8518.10.40Microphones having a frequency range of 300Hz-3.4kHz with diameter not over 10 mm and height not over 3 mm, for telecommunication8518.29.40Loudspeakers not mounted in their enclosures, with frequency range of 300Hz to 3.4kHz, with a diameter not over 50 mm, for telecommunication8518.40.10Audio-frequency electric amplifiers for use as repeaters in line telephony8518.40.20Audio-frequency electric amplifiers, other than for use as repeaters in line telephony8540.99.40Electron guns; radio frequency (RF) interaction structures for microwave tubes of subheadings 8540.71 through 8540.79, inclusive