5.MIC GAIN: This control is used to adjust, as required, microphone input sensitivity for optimum amount of modulation in transmit. UNIDEN CORPO- RATION OF AMERICA citizen's band transceivers have been designed to permit the user to attain levels of modulation up to 100% depending on the setting of the microphone gain control, using the microphone provided with the unit. UNIDEN's automatic compression and peak limiting circuits assure maximum modulation with minimum distortion.
6.RF GAIN: This control is used primarily to optimize reception in strong signal areas. Gain is reduced by counterclockwise rotation of the control.
7.CLARIFIER: The clarifier control is normally set to the center position. This feature has several uses and can greatly enhance receiver operation. First, if a received signal is slightly off frequency, this control can be operated as required to optimize the receiver frequency. The effectiveness of this clarifier features under these conditions can be observed either by listening for a more readable signal at the speaker or by noting the
8.METER MODE SWITCH:
SIR F Position: Meter indicates relative transmitter output power when transmit- ing, input signal strength when receiving.
MODPosition: Meter indicates averagepercentage of modulation.
9.NB/ANL SWITCH:When the switch is placed in the NB/ANL position, both of RF Noise Blanker and Automatic Noise Limiter circuits are activated. The NB is
very effective for repetitive impulse noise such as ignition noise. The AN L reduces most undesirable interference noises.
10.DIMMER SWITCH: This switch is used to adjust the brightness of the LED channel display and the meter. DI M position reduces brightness.
11.CH9 SWITCH: This switch is for use when emergency communication is needed on the emergency channel, CH9. Pressing the CH9 switch activates CH9 regard- less of the position of the channel selector switch. When CH9 switch is pressed, the channel display is blanked and the CH9 indicator is activated.
12.
and percentage of modulation when transmitting, as well as input signal strength when receiving. The meter is illuminated when power is on, the illumination can be adjusted by the DIMMER Switch for optimum brightness.