User manual COBRA 19 ULTA III

[. . . ] Introduction Our Thanks, The CB Story, and Customer Assistance Thank you for purchasing the Cobra 19 ULTRA III CB Radio Transceiver. Properly used, this Cobra product will give you many years of reliable service. The Citizens Band Story The Citizens Band lies between the shortwave broadcast and 10-meter amateur radio bands, and was established by law in 1949. The Class D two-way communications service was opened in 1959. [. . . ] Further clockwise rotation will increase the threshold level which a signal must overcome in order to be heard. Only strong signals will be heard at a maximum clockwise setting. Squelch is the "control gate" for incoming signals. Adjust Squelch/RF Gain Knob To squelch your radio: 1. Full clockwise rotation closes the gate, allowing only very strong signals to enter. Full counterclockwise rotation opens the "gate, " allowing all signals in. To achieve the Desired Squelch Setting (DSS), turn the Squelch control counterclockwise until you hear noise. Now turn the control clockwise just until the noise stops. This is the DSS setting. Gate Open Desired Squelch Setting (DSS) Channel 9/NOR/Channel 19 Button Channel 9/NOR/Channel 19 Set CH 9 to obtain instant access to the emergency channel. Set NOR position to use the channel knob to choose any of the 40 channels. Set CH 19 to obtain instant access to the information and calling channel. CB/PA Button CB/PA In the CB position, the PA function is disabled and the unit will transmit and receive on the selected channel. The PA function should not be used unless a PA speaker is connected. In the PA position, the transmit function is disabled and the microphone output will go only to the PA speaker. Gate Closed Strong Signals Medium Signals Weak Signals Noise Strong Signals Medium Signals Weak Signals Noise Strong Signals Medium Signals Weak Signals Noise S/RF Power Meter S/RF Power Meter Shows relative transmitter RF output power and input signal strength when receiving. The Liquid Crystal Display (LCD) segments increase with signal strength. TX Indicator TX Indicator The TX Indicator will light when in the transmit mode. "Busy" will appear when there is an incoming signal. 6 English Nothing Comes Close to a Cobra® 7 Operating Your Mobile Radio Operation · Operating Your Mobile Radio Operation · Operating Procedure to Receive Be sure that power cord, antenna and microphone are connected to the proper connectors before proceeding further. The CB/PA switch should be in the CB position. Turn the radio on by rotating the On-Off/Volume knob clockwise. Rotate the Squelch knob counterclockwise until incoming signal is heard. Set the On-Off/Volume knob and the Squelch knob to a comfortable listening level. Operation Ignition Noise Interference Use of a mobile receiver at low signal levels is normally limited by the presence of electrical noise. Under most operating conditions, when signal level is adequate, the background noise does not present a serious problem. Also, when extremely low level signals are being received, the transceiver may be operated with vehicle engine turned off. The unit requires very little current and therefore will not significantly discharge the vehicle battery. Even though this radio has an automatic noise limiter, in some installations ignition interference may be high enough to make good communications impossible. [. . . ] Cobra shall not be liable for any incidental, consequential or other damages; including, without limitation, damages resulting from loss of use or cost of installation. Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations may not apply to you. For Products Purchased Outside the U. S. A. Please contact your local dealer for warranty information. Receiver Sensitivity Selectivity Image Rejection Adjacent-Channel Rejection Automatic Noise Limiter Less than 1 µV for 10dB (S+N) 6 dB @ 7 KHz, 60 dB @ 10KHz 60 dB, typical 50 dB, typical Built-in Trademark Acknowledgement · Cobra®, Nothing Comes Close to a Cobra® and the snake design are registered trademarks of Cobra Electronics Corporation, USA. [. . . ]