You select you frequency by unscrewing a cap that releases a cover, exposing a pair of rotary switches. Any pack can be set to an impressive 256 frequencies, each in 100kHz steps over a 25.5MHz range. That’s some serious flexibility. The unit is powered with one AA battery, which is inserted by unscrewing the largest metal cap, which sticks off the bottom of the pack a little. Using a lithium battery, Lectrosonics claims a 5.5 hour battery life. Lithium is recommend, as duration ...

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