11. With these, it is possible to curtail reflection for a broad band of frequencies and incidence angles. 12. Also, why does the project assume that a real transmission would stay within a narrow band of frequencies ? 13. This then forms a 4 : 1 balun, which works correctly at only a narrow band of frequencies . 14. Frequency domain methods assign bands of frequency and then count the number of NN intervals that match each band. 15. The palm-size radios will be smaller than a CB walkie-talkie and will operate in the UHF band of frequencies . 16. For example, the output of a group multiplexer consists of a band of frequencies from 60 kHz to 108 kHz. 17. A crossover network, either passive or active, filters the band of frequencies to be handled by the woofer and other speakers. 18. The time-dependent mild-slope equation can be used to model waves in a narrow band of frequencies around \ omega _ 0. 19. A tuned circuit could block AC of one narrow band of frequencies , or allow passage of AC of one narrow band of frequencies. 20. A tuned circuit could block AC of one narrow band of frequencies, or allow passage of AC of one narrow band of frequencies .