148GTLE_Eng-Spa
Page 2
... YOUR SALES RECEIPT, THE CARTON AND "PACKING" FOR POSSIBLE FUTURE USE. How To Use Your 40-CHANNEL, CITIZENS BAND SSB/AM 2-WAY MOBILE RADIO Model 148 GTL Contents Page Section I: Introduction 2 Section II: Specifications 3, 4 Section III: Installation 5, 6, 7, 8 Section IV: Operation 9-17 Controls and Indicators 9 A.Control ...20, 21 Ten Code ...19 A few Rules That Should Be Obeyed 20 How Your CB Can Serve You 20 Use Channel 9 for detailed information about your local dealer. The Cobra® line of Purchase Dealer Name Keep this manual for Emergency Messages Only 21 Date...
... YOUR SALES RECEIPT, THE CARTON AND "PACKING" FOR POSSIBLE FUTURE USE. How To Use Your 40-CHANNEL, CITIZENS BAND SSB/AM 2-WAY MOBILE RADIO Model 148 GTL Contents Page Section I: Introduction 2 Section II: Specifications 3, 4 Section III: Installation 5, 6, 7, 8 Section IV: Operation 9-17 Controls and Indicators 9 A.Control ...20, 21 Ten Code ...19 A few Rules That Should Be Obeyed 20 How Your CB Can Serve You 20 Use Channel 9 for detailed information about your local dealer. The Cobra® line of Purchase Dealer Name Keep this manual for Emergency Messages Only 21 Date...
148GTLE_Eng-Spa
Page 4
... wire (with good electrical contact (remove paint) may be used. 5. Any convenient location with the fuse) to your vehicle, hold the COBRA 148GTL with the receptacle. 3. Mount the microphone bracket on the ignition switch. SSB: 6 dB @ 1.1 KHz, 60 dB @ 2.3 KHz. MOUNTING THE CONNECTION ... Frequency Response Built-in Speaker External Speaker (Not Supplied) SSB: 0.25 µV for 10dB (S+N)/N at greater than 1/2watt of audio output. Most CB antennas are terminated with a type PL-259 plug and mate with mounting bracket in the exact location desired. AM: 6dB @ 3 KHz, 50 dB @...
... wire (with good electrical contact (remove paint) may be used. 5. Any convenient location with the fuse) to your vehicle, hold the COBRA 148GTL with the receptacle. 3. Mount the microphone bracket on the ignition switch. SSB: 6 dB @ 1.1 KHz, 60 dB @ 2.3 KHz. MOUNTING THE CONNECTION ... Frequency Response Built-in Speaker External Speaker (Not Supplied) SSB: 0.25 µV for 10dB (S+N)/N at greater than 1/2watt of audio output. Most CB antennas are terminated with a type PL-259 plug and mate with mounting bracket in the exact location desired. AM: 6dB @ 3 KHz, 50 dB @...
148GTLE_Eng-Spa
Page 6
... must now be able to handle at the transceiver speaker or the external speaker, if used to be heard at rated operating conditions. During normal CB operation, the Volume control is used to prevent acoustic feedback. Direct speaker away from large metal objects when adjusting (metal telephone or light posts, ...noise. Physical separation or isolation of the RF amplifier under strong signal conditions. 8 9 Try a different location in your car (keeping in the absence of your COBRA 148GTL. Try a different location on the rear panel is used . 2.
... must now be able to handle at the transceiver speaker or the external speaker, if used to be heard at rated operating conditions. During normal CB operation, the Volume control is used to prevent acoustic feedback. Direct speaker away from large metal objects when adjusting (metal telephone or light posts, ...noise. Physical separation or isolation of the RF amplifier under strong signal conditions. 8 9 Try a different location in your car (keeping in the absence of your COBRA 148GTL. Try a different location on the rear panel is used . 2.
148GTLE_Eng-Spa
Page 7
...vehicle. DIM/NOR/BRT SWITCH. Channel 9 has been reserved by adjusting the DYNAMIKE knob to the transceiver antenna output connector. PA/CB SWITCH. This allows you easily measure your transceiver. With the PA speaker connected as outlined previously, be advisable. 5. Generally speaking,...the operator's preference. Some experimentation will provide more than adequate results when combined with the high audio output level available from the COBRA 148GTL. Section IV Operation (Continued) 4. Turn the power on the meter face. Although this type speaker plus the inherent ...
...vehicle. DIM/NOR/BRT SWITCH. Channel 9 has been reserved by adjusting the DYNAMIKE knob to the transceiver antenna output connector. PA/CB SWITCH. This allows you easily measure your transceiver. With the PA speaker connected as outlined previously, be advisable. 5. Generally speaking,...the operator's preference. Some experimentation will provide more than adequate results when combined with the high audio output level available from the COBRA 148GTL. Section IV Operation (Continued) 4. Turn the power on the meter face. Although this type speaker plus the inherent ...
148GTLE_Eng-Spa
Page 8
...If there is any of the SSB signal. PRESS-TO-TALK MICROPHONE. The receiver and transmitter are controlled by turning VOL control clockwise on COBRA 148GTL. 3. Press the switch and the transmitter is transmitted. When transmitting, hold the microphone two inches from standard AM reception in the receiver... far, or some of the antenna, and to optimize AM signals. The elimination of signals presently used for the SWR measurement (Note: CB must be in transmit the LED will not be present). SSB reception differs from the mouth and speak clearly in any degradation whatsoever in ...
...If there is any of the SSB signal. PRESS-TO-TALK MICROPHONE. The receiver and transmitter are controlled by turning VOL control clockwise on COBRA 148GTL. 3. Press the switch and the transmitter is transmitted. When transmitting, hold the microphone two inches from standard AM reception in the receiver... far, or some of the antenna, and to optimize AM signals. The elimination of signals presently used for the SWR measurement (Note: CB must be in transmit the LED will not be present). SSB reception differs from the mouth and speak clearly in any degradation whatsoever in ...
148GTLE_Eng-Spa
Page 12
...number 3. You are not allowed to use on a conversation with another station for more interesting, and help fast in your CB to carry on Channel 9. You may not use your CB. 6. No tornado sighted." Bring the sailboat into port." You are not allowed to blast others a chance to use ...the CB to find your destination. • Help law enforcement officers by reporting drunk and reckless drivers. HOW YOUR CB CAN SERVE YOU • Warn of emergency or breakdown. • Suggest good spots to be...
...number 3. You are not allowed to use on a conversation with another station for more interesting, and help fast in your CB to carry on Channel 9. You may not use your CB. 6. No tornado sighted." Bring the sailboat into port." You are not allowed to blast others a chance to use ...the CB to find your destination. • Help law enforcement officers by reporting drunk and reckless drivers. HOW YOUR CB CAN SERVE YOU • Warn of emergency or breakdown. • Suggest good spots to be...
Circuit Diagram
Page 2
...12,14,16,19,22,23, 32,49,53,66,78,89,93, 114,119,123,124,126, 131,132,142,145,148, 149,152,154,157,161, 203 R-39,98 - 11-128 Resistor, Carbon.Film, 3.9K ohm 1/8W Resistor, Carbon...209, CH SW Switch, Rotary, SR-205, MODE/METER Switch, Rotary, SW-067, NB/ANL Switch, Rotary, SW-056, PA-CB, DIM, TONE Speaker, SP-050 Meter, MT-158 Microphone, MK-091 Jack, Antenna, JK-068 Jack, Microphone, JK 107 Jack..., Ceramic, Capacitor, Ceramic, Capacitor, Ceramic, Capacitor, Ceramic, Capacitor, Ceramic, Capacitor; BILL OF MATERIAL FOR COBRA 148GTL CIRCUIT SYMBOL IC-1 IC-2 IC-3 IC-4 -
...12,14,16,19,22,23, 32,49,53,66,78,89,93, 114,119,123,124,126, 131,132,142,145,148, 149,152,154,157,161, 203 R-39,98 - 11-128 Resistor, Carbon.Film, 3.9K ohm 1/8W Resistor, Carbon...209, CH SW Switch, Rotary, SR-205, MODE/METER Switch, Rotary, SW-067, NB/ANL Switch, Rotary, SW-056, PA-CB, DIM, TONE Speaker, SP-050 Meter, MT-158 Microphone, MK-091 Jack, Antenna, JK-068 Jack, Microphone, JK 107 Jack..., Ceramic, Capacitor, Ceramic, Capacitor, Ceramic, Capacitor, Ceramic, Capacitor, Ceramic, Capacitor; BILL OF MATERIAL FOR COBRA 148GTL CIRCUIT SYMBOL IC-1 IC-2 IC-3 IC-4 -
Circuit Diagram
Page 3
...12,14,16,19,22,23, 32,49,53,66,78,89,93, 114,119,123,124,126, 131,132,142,145,148, 149,152,154,157,161, 203 R-39,98 R-128 Resistor, Carbon.Film, Resistor, Carbon Film, Resistor, Carbon Film, ...,55,58,63,76,182 C-19,20,56,67,60,61,75, 83,91,104,136,154 C-77,79,94,95,148,155, 177,183,187 C-137,139 C-130,145 C-163 C-41,47,48 C-38,98 C-125 C-85,116,121,131...209, CH SW Switch, Rotary, SR-205, MODE/METER Switch, Rotary, SW-067, NB/ANL Switch, Rotary, SW-056, PA-CB, DIM, TONE Speaker, SP-050 Meter, MT-158 Microphone, MK-091 Jack, Antenna, JK-068 Jack, Microphone, JK-107 Jack,...
...12,14,16,19,22,23, 32,49,53,66,78,89,93, 114,119,123,124,126, 131,132,142,145,148, 149,152,154,157,161, 203 R-39,98 R-128 Resistor, Carbon.Film, Resistor, Carbon Film, Resistor, Carbon Film, ...,55,58,63,76,182 C-19,20,56,67,60,61,75, 83,91,104,136,154 C-77,79,94,95,148,155, 177,183,187 C-137,139 C-130,145 C-163 C-41,47,48 C-38,98 C-125 C-85,116,121,131...209, CH SW Switch, Rotary, SR-205, MODE/METER Switch, Rotary, SW-067, NB/ANL Switch, Rotary, SW-056, PA-CB, DIM, TONE Speaker, SP-050 Meter, MT-158 Microphone, MK-091 Jack, Antenna, JK-068 Jack, Microphone, JK-107 Jack,...