Manuale d’uso / di manutenzione del prodotto 29 LTD CHR del fabbricante Cobra Electronics
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H o w t o U s e Y o u r C o b r a 2 9 L T D C H R Cont ents Fea tures ..................................................................................................1 The CB Story ....................................................................
Installation Installation Location 3 2 Mounting and Connection Mounting and C onnection Hold the radio with the mounting bracket in the exact desired location. If there is no interference, remov e the bracket and use it as a template to mark the location f or the mounting screws.
Installation Installation 5 4 Note Connecting to an accessory fuse prevents the unit from being left on accidentally , and also permits operating the unit without running the engine. Note In positive ground vehicles the red wire goes to the chassis and the black wire is connected to the ignition switch.
Ignition Noise Interference Antennas Use of a mobile receiv er at low signal lev els is normally limited by the presence of electrical noise. The primary source of noise in automobiles is from the alternator and ignition syst em. T ypically , when signal lev el is adequat e, the background noise does not present a serious problem.
The CB/P A button should be in the CB position. Operation 9 Operation T urning On Setting Channel Selector 8 T urning On Make sure the power cord , antenna and microphone are connected to their proper connectors before starting. Setting Channel Selec tor 2 1 Ro ta t e th e On / Off V olu me kn ob cl oc kwi se t o a normal listening level.
Operation Operation Calibrate For SWR (Standing W ave Ratio) 11 10 Note Antenna Indicator LED will illuminate when T X if SWR is high. Note Calibration must be made in an open area (never in a gar age). V ehicle doors must be closed. No one should be standing near the antenna.
Operation 13 Operation 12 Note The reading will be slightly higher on Channels 1 and 40 compared to Channel 20. Note When switched to SWR position the meter needle should ideally be as far to the left as possible. Anything over 3 is not acceptable. The antenna indicator will light.
The S/RF-SWR-CAL switch must be in the S/RF position to read the meter . Operation 15 Operation 14 1 S-Meter S-Meter Swings proportionately to strength of incoming signal when receiving .
Operation Operation 17 16 RF Gain Control Bright/Dim Switch RF Gain Contr ol The RF Gain is used to optimize recepti on in strong or weak signal areas .
F ull clockwise rotation closes the gate allowing only very strong signals to enter . F ull counter clockwise rotation opens the “ gate ” allowing all signals in. T o achieve the Desired Squelch Setting (DSS), turn the Squelch control counterclockwise until you hear noise .
Setting Dynamike® This controls the micr ophone sensitivity (outgoing audio level). T o T ransmit 21 T o T ransmit T ransmit T alkBack 20 Setting Dynamike® Caution! Be sure the antenna is properly connected to the radio befor e transmitting .
Operation Operation RF Meter 23 22 External Speaker RF Meter This meter swings proportionately to the RF output (outgoing signal) while transmitting . External Speaker The external speaker jack is used for remote receiver monit oring. The S/RF-SWR-CAL switch must be in the S/RF position.
Operation Operation P A (Public Address) 25 24 P A (Public A ddress) Connect an external P A speaker to the P A jack on the rear panel. Set CB/P A switch to P A position. Push and hold microphone button and speak in a normal voice. Y our voice will now transmit on the P A speaker .
T emporary Mobile Set-Up 27 Base Station Operation (From 120V AC House Current) T emporary Mobile Set-Up T emporary Mobile Operation F or temporary mobile operation you may w ant to purchase an optional automobile pow er adapter from your COBRA dealer .
How Y our CB Can Serve Y ou How Y our CB Can Serve Y ou 29 28 The FC C gives these examples of permitted and prohibited messages for channel 9. These are only guidelines and not all-inclusive: P ermitted Example Message Y es “ T ornado sighted six miles nor th of town.
How Y our CB Can Serve Y ou How Y our CB Can Serve Y ou 31 30 Code Meaning 10-29 Time is up for contact 10-30 Does not conform to FC C rules 10-33 Emergency traffic 10-34 T rouble at this station 10-3.
29 L TD CHR Specifications Frequency Ranges 33 32 G ENERAL C h a n n e l s ..........................C B -4 0 C H Frequency Range . . . . . . . . . . . . . . . . . . CB - 26.965 to 27.405 MHz F requency T olerance . . . . . . . . . . . . . . . 0.005 % Frequency Control .
Optional Accessories 35 Replacement DC P ower Cord For in v ehicle use 426-002-N-001 Replacement Mounting Brack et For in v ehicle use 251-353-9-001 Replacement Thumb Screws For in v ehicle use 634-08.
36 Optional Accessories cont. 4 Pin Replacement Dynamic Microphone HG M73 4 Pin Noise Canceling Microphone HG M77 Dynamic External Speaker HG S100 Noise Canceling External Speaker HG S300 Noise Cancel.
The Citizens Band lies between the shortwave broadcast and 10-meter Amateur r adio bands, and was established by law in 1949. The C lass D two-way c ommunications service was opened in 1959. (CB also includes a Class A citizens band and Class C remote con trol frequencies.
426- 002- N-0 01 Repl ace ment D C P ow er Co rd 251- 353- 9-0 01 Replac eme nt Mou nti ng Br acket 634-081-9-001 Replacement Thumb Screws 741-080-9-001 Replacement Microphone Bracket HG A1000 21” B.
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 29 LTD CHR 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 29 LTD CHR - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cobra Electronics 29 LTD CHR imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cobra Electronics 29 LTD CHR ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cobra Electronics 29 LTD CHR, 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 29 LTD CHR.
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 29 LTD CHR. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cobra Electronics 29 LTD CHR 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.
