Manuale d’uso / di manutenzione del prodotto 148.GTL.ST del fabbricante Cobra Electronics
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PRINTED IN THAILAND ©COBRA ELECTRONICS CORPORATION 1997 480-241-P-001 Cobra Electronics Corporation 6500 W . Cortland Street Chicago, IL 60707 OPERATING INSTRUCTIONS FOR Y OUR 40 CHANNEL CITIZENS BAND SSB/AM 2-W A Y MOBILE RADIO Model 148 GTL ST 148.
40-CHANNEL, CITIZENS BAND SSB/AM 2-W A Y MOBILE RADIO Model 148 GTL ST Contents P age The CB/SoundT r acker Story .............................................................. 1 Section I: Introduction.................................................
Section I Introduction FREQUENCY RANGE T he COBRA 148 GTL ST transcei v er represents one of the most ad v anced SSB/AM two-w a y radios ever designed for use as a Class D station in the Citizens Radio Service.
Section II Specifications (Cont.) 4 RECEIVER Sensitivity SSB: 0.25 µ V for 10dB (S+N)/N at greater than 1/2-watt of audio output. AM: 0.5 µ V for 10 dB (S+N)/ at greater than 1/2-watt of audio output. Selectivity AM: 6dB @ 3 KHz, 50 dB @ 9 KHz. SSB: 6 dB @ 1.
6 Section III Installation IGNITION NOISE INTERFERENCE Use of a mobile recei v er at low signal levels is normally limited by the presence of electrical noise. T he primary source of noise in automobile installations is from the generator and ignition system in the vehicle.
Section III Installation (Continued) D. T ry a different location on your car (keeping in mind the radiation pattern you wish). E. Is the antenna perfectly vertical? F . T ry a different location in your neighborhood. Stay a w ay from large metal objects when adjusting (metal telephone or light posts, fences, etc.
Section IV Operation (Continued) 4. SWR CAL CONTROL (outer concentric dial) . In order for you to achiev e maximum radiated power and the longest range, it is important that your antenna be in good condition, properly adjusted and matched to your trans- ceiver .
12 Section IV Operation (Continued) B. INDICA TOR FUNCTIONS 15. S-METER. Swings proportionally to the strength of the incoming signal. 16. RF METER . Swings proportionally to the RF output power . 17. SWR METER . Sw i ng s p r o po r t io n a l ly to t he r a ti o o f s t an d i n g w a ve v o l ta ge a nd RF ou tpu t .
14 Section IV Operation (Continued) T hus when a voice is used in place of a whistle or tone, in the proper listening mode the voice will be recei v ed correctly whereas in the incorrect mode, the v oice will be translated backwards and cannot be made intelligible by the voice lock control.
16 3 4 2 1 Section IV Operation (Continued) Fig. 2. Microphone Cable Preparation T o wire the microphone cable to the plug provided, proceed as follows. Fig. 3 . Microphone plug wiring. 1. Remove the retaining screw. 2. Unscrew the housing from the pin receptacle bod y .
18 Section V Maintenance and Adjustment T he COBRA 148 GTL ST transcei v er is specifically designed for the environment encountered in mobile installations. T he use of all solid state circuitry and its light weight result in high reliability. Should a failure occur, however, replace parts only with identical parts.
Activ ating/Testing SoundT r acker ACTIV A TING SOUNDTRACKER 1. Press the SoundTracker button on the right side of front panel. TESTING SOUNDTRACKER 1. Select any unused channel on your CB . 2. Open the squelch fully by turning the knob counter-clockwise until it stops.
22 Section VI Appendix (Continued) A FEW RULES THAT SHOULD BE OBEYED 1. Y ou are not allowed to carry on a con v ersation with another station for more than fiv e minutes at a time without taking a one-minute break, to gi v e others a chance to use the channel.
If Y ou T hink Y ou Need Service If Y ou T hink Y ou Need Service, Call 773-889-3087 Y ou m a y be aske d to send you r uni t to the Cobr a f actor y . It will b e neces sar y to fur nis h th e follo wi ng, in or der to ha ve the pr oduc t ser vic ed and r e t u r n e d .
Description Part No. Cost Ea. X Qty. = Amount Replacement microphone with 4-pin connector for 148 GTL ST CA-73 $19.95 MOBILE POWER MICROPHONE Amplified Power Microphone with 4-pin connector for 148 GTL ST CA-75 $19.95 NOISE CANCEL MICROPHONE for 148 GTL ST CA-77 $39.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Cobra Electronics 148.GTL.ST è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Cobra Electronics 148.GTL.ST - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cobra Electronics 148.GTL.ST imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cobra Electronics 148.GTL.ST ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cobra Electronics 148.GTL.ST, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Cobra Electronics 148.GTL.ST.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Cobra Electronics 148.GTL.ST. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cobra Electronics 148.GTL.ST insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
