Narrow Band IF Board
± 7.5 kHz narrow band board for PRC677.
Features low power consumption and sensitivity better than 0.5 µV; a crystal filter is used for optimum selectivity.
Narrow and Wide Band IF Board
± 15 kHz wideband I.F. board for PRC 677A allow data transmission up to 2400 baud.
In voice mode, the +/-7.5 kHz filter is used. For data transmission, the wide filter is used.