Cobra 148 GTL Support Question
Cobra 148 GTL Support Question
Find answers below for this question about Cobra 148 GTL.Need a Cobra 148 GTL manual? We have 3 online manuals for this item!
Question posted by Anonymous-162475 on May 14th, 2017
I Have A Cobra 2000 It Keys Up But Does No Show Any Watts Final Measures Good
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Current Answers
Answer #1: Posted by Odin on May 15th, 2017 9:11 AM
Odin
Member since:
April 10th, 2010 Points: 41,236,700
Member since:
April 10th, 2010 Points: 41,236,700
It's hard to answer your question, as you didn't ask one!--and I can't tell what your concern might be. However, this online manual may solve--it's easily navigable and features thumbnails across the top. Feel free to resubmit if necessary.
Hope this is useful. Please don't forget to click the Accept This Answer button if you do accept it. My aim is to provide reliable helpful answers, not just a lot of them. See https://www.helpowl.com/profile/Odin.
Related Cobra 148 GTL Manual Pages
148GTLE_Eng-Spa - Page 1
OPERATING INSTRUCTIONS FOR YOUR
40 CHANNEL
CITIZENS BAND SSB/AM 2-WAY MOBILE RADIO
Model 148 GTL
Nothing comes close to a Cobra™
PRINTED IN CHINA
©2002 COBRA ELECTRONICS CORPORATION 6500 WEST CORTLAND STREET CHICAGO, IL 60707 USA
480-046-P
148GTLE_Eng-Spa - Page 2
...® Traffic Warning Systems Accessories HighGear™ Accessories
If You Think You Need Service,
please contact your Cobra CB Radio System.
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...
148GTLE_Eng-Spa - Page 3
...365
37
27.375
38
27.385
39
27.395
40
27.405
The COBRA 148GTL has a vastly superior receiver which is in the Citizens Radio Service. Phase Lock Loop (PLL) synthesizer. 0.005%. 0.001%. -22&#...Semiconductors
Meter (3-in dynamic; AM and SSB; 300 to 27.405 MHz. SSB, 12 watts, PEP. Transmit: AM full mod., 2.2A. Plug-in -1)
TRANSMITTER Power Output Modulation
Intermodulation...
148GTLE_Eng-Spa - Page 4
...the mounting bolts.
Also provide a good electrical connection to mount the transceiver:
1. Most CB antennas are terminated with a type PL...PA (Not Supplied)
4 watts into 8 ohms.
300 to +13.8V DC. MOUNTING THE CONNECTION
The COBRA 148GTL is supplied with ... the bracket and radio to -13.8V DC. Connect the black lead to your vehicle, hold the COBRA 148GTL with mounting it . ...
148GTLE_Eng-Spa - Page 5
... nondirectional. Shorter, loaded-type whip antennas are having difficulties in 1/8" increments until a good match is obtained. 2. Extend the antenna a short distance and again follow the procedure above , but adjust the length by cutting in adjusting your COBRA dealer or a 2-way radio technician for applications where the maximum possible distance is a lower frequency. Antennas...
148GTLE_Eng-Spa - Page 6
...feedback. Physical separation or isolation of your COBRA 148GTL. Section IV Operation
CONTROLS AND ...minutes at rated operating conditions. CONTROL FUNCTIONS 1. During normal CB operation, the Volume control is eliminated. For maximum receiver sensitivity...only to adjust the output level obtained either at least 4 watts.
A. Only strong signals will operate into an SWR of 2...
148GTLE_Eng-Spa - Page 7
...is available several inches away from the COBRA 148GTL. Select a channel near the...transceiver antenna output connector. PA/CB SWITCH. This allows you to... that full talk power is measured.
12.
Unless the station with... DYNAMIKE. Adjusts the microphone gain in good condition, properly adjusted and matched to ...the PA SPKR jack at least three watts should be sure that is used ...
148GTLE_Eng-Spa - Page 8
...be present). CHANNEL INDICATOR. RECEIVE/TRANSMIT INDICATOR. The radio comes complete with 100% of the noise and interference...the RF gain control fully clockwise for the SWR measurement (Note: CB must be understood if you wish to receive. Leave... strong AM signals unreadable. For installation instructions on COBRA 148GTL.
3. Set PA-CB Switch to the next step.
2. Swings proportionally to...
148GTLE_Eng-Spa - Page 9
... leads. When listening to avoid shorting when the microphone plug is heard in one correct speed that they must be revised as a phonograph speed control. Cobra 148GTL microphone schematic. Keep the exposed wire lengths to a minimum to an AM transmission, a correct sideband is reassembled.
14
15 If the microphone to the...
148GTLE_Eng-Spa - Page 10
... IV Operation (Continued) 16
4
1
Fig. 4. If the washer is not captive to the pin receptacle body, make sure that it into the pin receptacle body, a final fraction of pin receptacle. Note the location of the pin receptacle body before starting to the pins of the microphone are complete, push the knurled...
148GTLE_Eng-Spa - Page 11
...use permits faster communications and better understanding in high reliability. Section V Maintenance and Adjustment
The COBRA 148GTL transceiver is specifically designed for standard questions and answers. If a problem still exists,...Time is up for contact Does not conform to FCC rules I will give you a radio check EMERGENCY TRAFFIC Trouble at this channel 10-94 Please give me a long
count 10...
148GTLE_Eng-Spa - Page 12
... six miles (10 km) north of gas in event of emergency or breakdown. • Suggest good spots to eat and sleep. • Make long trips more
than five minutes at Exit 10 on...powering them with another station for you as you travel. • Provide "local information" to use the CB to 15 cm)." "I am out of town."
There is moving smoothly on a conversation with illegally amplified ...
Circuit Diagram - Page 2
...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, ..., Microphone, JK 107
Jack, DC PWR, JK-052
Jack; BILL OF MATERIAL FOR COBRA 148GTL
CIRCUIT SYMBOL
IC-1 IC-2 IC-3 IC-4 - EI-175
R-72,174
R-113...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...
Circuit Diagram - Page 3
... 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-...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 ...
Circuit Diagram - Page 1
...471307 0140
246
'HD CA L
/RF
.SWR YR4136 SOS
5104088
/77
21oli
048 61352215
FINAL
To° Off
D53 KOSIE4.
CHECKED BY:
APPROVED 01.:
RI WM:
OER:
AI
1SHEET:...
50402 OH/OFF
/77 14.!:
05
12401 .022u c
i1001 0402 =OP
_ 04ail
TITLE:
148GTL-ST CIRCUIT DIAGRAM FOR COBRA
PREPARED: S K.CNEUNG
-
ED
TRI4
R50
27MHZ 2315*(0) 2.2K
045 1000P
-C38 41H
r77
L.5
1.6 T
5P - ...
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