Cobra-electronics Cobra 148 GTL Uživatelský manuál

How To Use Your40-CHANNEL, CITIZENS BAND SSB/AM 2-WAY MOBILE RADIOModel 148 GTLContents PageThe CB Story ...

18Section V Maintenance and AdjustmentThe COBRA 148GTL transceiver is specifically designed for the environment en-countered in mobile installations.

Section VI Appendix (Continued)A FEW RULES THAT SHOULD BE OBEYED1. You are not allowed to carry on a conversation with another station for morethan fi

If You Need ServiceIf You Think You Need Service, Call 773-889-3087You may be asked to send your unit to the Cobra factory. It will be necessary tofu

Description Part No. Cost Ea. X Qty. = AmountReplacement microphone with 4-pin connector for 148 GTL CA-73 $19.95MOBILE POWER MICROPHONEAmplified

2PRINTED IN THAILAND ©COBRA ELECTRONICS CORPORATION 1996 480-163-P-001Cobra Electronics Corporation6500 W. Cortland StreetChicago, IL 60707

Section I IntroductionFREQUENCY RANGEThe COBRA 148GTL transceiver represents one of the most advanced SSB/AM two-way radios ever designed for use as a

RECEIVERSensitivity SSB: 0.25 µV for 10dB (S+N)/N at greaterthan 1/2-watt of audio output. AM: 0.5 µV for 10 dB (S+N)/ at greater than 1/2-watt of aud

Section III Installation (Continued)IGNITION NOISE INTERFERENCEUse of a mobile receiver at low signal levels is normally limited by the presenceof el

Section III Installation (Continued)D. Try a different location on your car (keeping in mind the radiation pattern you wish).E. Is the antenna perfect

10Section IV Operation (Continued)4. SWR CAL CONTROL (outer dual concentric). In order for you to achievemaximum radiated power and the longest range,

Section IV Operation (Continued)B. INDICATOR FUNCTIONS1. S-METER. Swings proportionally to the strength of the incoming signal.2. RF METER. Swings pro

Section IV Operation (Continued)Thus when a voice is used in place of a whistle or tone, in the proper listeningmode the voice will be received correc

Section IV Operation (Continued)Fig. 2. Microphone Cable PreparationTo wire the microphone cable to the plug provided, proceed as follows.Fig. 3. Micr