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COBRA schematic diagram service manual circuit diagram wiring schema repair instruction guide user manual free pdf download

 

       
       
       
       

 

 

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COBRA 130 462-467 MHz -14 CANALES FRS
COBRA 148-FGTL 26.965-27.405 MHz
COBRA 148-GTL 26-29.700 MHz
COBRA 148-GTL(REG) 25.845-28.725 MHz
COBRA 19DX IV 26,965 - 27,405 MHz
COBRA 19-DX/II 26.965-27.405 MHz
COBRA 19-LTDII 26.965-27.405 MHz
COBRA 22-PLUS 26.965-27.405 MHz
COBRA 23-PLUS 26.965-27.405 MHz
COBRA 7-ULTRA 29.965-27.405 MHz
COBRA CP-2501 43 - 49 MHz
COBRA CP-2507 43 - 49 MHz
COBRA CP-702 46.610-49.990 MHz
COBRA CP-702 46-49 MHz
COBRA CRX825 de 462 MHz / 467 MHz
COBRA CTX225 14 CANALES FRS 8 CANLES GMRS 462/467 MHz
COBRA CXR700 de 462/467 MHz
COBRA CXR825 de 462/467 MHz
COBRA CXR900 14 CANALES FRS 8 CANALES GMRS
COBRA CXT125 14 CANALES FRS 8 CANALES GMRS
COBRA CXT225 14 Canales FRS y 8 Canales GMRS  462/467 MHz 
COBRA CXT237 de 462/467 MHz
COBRA CXT400 14 CANALES FRS 8 CANALES GMRS
COBRA CXT425 14 CANALES FRS 8 CANALES GMRS
COBRA CXT85 14 CANALES FRS 8 CANALES GMRS
COBRA CXT90 14 CANALES FRS 8 CANALES GMRS
COBRA DX-19 26.965-27.405 MHz
COBRA FRS 100 462-467 MHz -14 CANALES FRS
COBRA FRS 100 462-467 MHz -14 CANALES FRS
COBRA FRS 105 462-467 MHz -14 CANALES FRS
COBRA FRS-100 462.5625, 462.5875 MHz 2 Canales FRS
COBRA FRS-250 462-467 MHz -14 CANALES FRS
COBRA FRS-300 462-467 MHz -14 CANALES FRS
COBRA GTL-146 26.965-27.405 MHz
COBRA GTL-148 26.965-27.405 MHz
COBRA GTL-2000 26.965-27.405 MHz
COBRA HH-33-2 26.965-27.405 MHz
COBRA HH-35 26.965-27.405 MHz
COBRA HH-40 26.965-27.405 MHz
COBRA HH-45/W 26.965-27.405 MHz
COBRA LI 3900 2DX 14 CANALES FRS 8 CANALES GMRS
COBRA LI 4900-2 WX 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA LI 4900-2WX 14 CANALES FRS 8 CANALES GMRS
COBRA LI 5600 2DX 14 CANALES FRS 8 CANALES GMRS
COBRA LI 6000-2 WX 14 CANALES FRS 8 CANALES GMRS
COBRA LI 6500-2 WX 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA LI 6500-2WX 14 CANALES FRS 8 CANALES GMRS
COBRA LI 6700 2WX 14 CANALES FRS 8 CANALES GMRS
COBRA LI 7200-2 WX VP 14 CANALES FRS 8 CANALES GMRS
COBRA MR F45 156,050 - 163,275 MHz (S.M.M.)
COBRA MR F55 156.050 -157.425 MHz (S.M.M.)
COBRA MR F55-B-D de 156,025 MHz. - 157,425 MHz.
COBRA MR F55-D de 156,025 MHz. - 157,425 MHz.
COBRA MR F75 156,025 - 157.425 MHz (S.M.M.)
COBRA MR HH100 VP 156  - 157,425 MHz (S.M.M.)
COBRA MR HH125 155,5 - 162,5 MHz
COBRA MR HH300 VP 156,050 - 163,275 MHz (S.M.M.)
COBRA MR HH300 VP 156.050 - 157.425 MHz (S.M.M.)
COBRA MR HH325 VP 156,050 - 157,425 MHz (S.M.M.)
COBRA MR HH330 155,5 - 162,5 MHz
COBRA MR HH330 156,025 MHz - 157,425 MHz
COBRA MR HH400 156,050 - 163,275 MHz (S.M.M.)
COBRA MR HH475 155,5 - 162,5 MHz
COBRA MR HH90 156.050 - 157.425 MHz (S.M.M.)
COBRA PLUS-18 26.965-27.405 MHZ
COBRA PLUS-20 26.965-27.405 MHZ
COBRA PLUS-23 26.965-27.405 MHZ
COBRA PLUS-39 26.965-27.405 MHZ
COBRA PR 1000 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 135-2VP 462-467 MHz 7 Canales FRS/ 8 Canales GMRS
COBRA PR 145-2 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 150-2VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 165-2 VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 190-2 VP 14 CANALES FRS 8 CANALES GMRS
COBRA PR 245-2 VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 245-2VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 250-2 WX VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 255-2 VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 260-2 WX 462-467 MHz 14 CANALES FRS/ 8 Canales GMRS
COBRA PR 270-2 VP 14 CANALES FRS 8 CANALES GMRS
COBRA PR 3500-2 DX VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 3800-2-DX-VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 4100-2 WX 14 CANALES FRS 8 CANALES GMRS
COBRA PR 4200-2 WX VP 14 CANALES FRS 8 CANALES GMRS
COBRA PR 4700-2 WX VP 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA PR 950DX 462-467 MHz 14 Canales FRS/ 8 Canales GMRS
COBRA SCD10 800, 900,1800 y 1900 MHz
COBRA SCD10 800,900,1800,1900 MHz GSM/GPRS
COBRA SCD10 ( KIT GC02 ) 800, 900, 1800, 1900 MGz GSM/GPRS
COBRA SCD2210 800, 900, 1800, 1900 MHz
COBRA ULTRA-19 26.965-27.405 MHz
COBRA XLR-135 26.965-27.405 MHz
COBRA MARINE MR HH125 156,025 - 157,425 MHz

 

     
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  Required Test Equipment


 Digital DC Voltmeter (high-Z, 1 M-Ohm/V)
 DC Ammeter
 RF Millivoltmeter
 AC Voltmeter
 RF Standard Signal Generator w/calibrated output and dB scale, 0 dBμ = 0.5μV
 Signal Generator with calibrated output
 Spectrum Analyzer good to at least 1 GHz.
 Frequency Counter
 50-Ohm Dummy Load (200 watts)
 100-Ohm Dummy Load (200 watts)
 150-Ohm Dummy Load (200 watts)
 In-Line Wattmeter (200 watts, 50-Ohm)
 Linear Detector
 RF Coupler


Alignment Preparation & Precautions


A 50-ohm RF Dummy load and in-line wattmeter must be
connected to the main antenna jack in all procedures that
call for transmission, except where specified otherwise.
Correct alignment is not possible with an antenna.
After completing one step, read the following step to determine
whether the same test equipment will be required.
If not, remove the test equipment (except dummy load
and wattmeter, if connected) before proceeding.


Correct alignment requires that the ambient temperature
be the same as that of the transceiver and test equipment,
and that this temperature be held constant between 68 °F~
86°F (20°C ~ 30°C). When the transceiver is brought into
the shop from hot or cold air, it should be allowed time to
come to room temperature before alignment.


Whenever possible, alignments should be made with oscillator
shields and circuit boards firmly affixed in place.
Also, the test equipment must be thoroughly warmed up
before beginning.


Note: Signal levels in dB referred to in this procedure are
based on 0 dBμ = 0.5 μV (closed circuit).

Under no circumstances should any alignment be attempted
unless the normal function and operation of the transceiver
are clearly understood, the cause of the malfunction
has been clearly pinpointed and any faulty components
replaced, and the need for realignment determined
to be absolutely necessary.


The following test equipment (and thorough familiarity
with its correct use) is necessary for complete realignment.
Most steps do not require all of the equipment listed,
but the interactions of some adjustments may require
that more complex adjustments be performed in a sequence.
Do not attempt to perform only a single step unless
it is clearly isolated electrically from all other steps.
Rather, have all test equipment ready before beginning,
and follow all of the steps in a section in the order they
are presented.

 

 

 
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