Cobra Electronics Marine Radio COBRA User Manual

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of 21
 
29 LTD CHR Specifications
Frequency Ranges
3332
G
ENERAL
Channels ... .. .. ... .. .. .. ... .. .. .. .CB -40 CH
FrequencyRange . .. .. ... .. .. .. ... .CB -26.965 to27.405 MHz
F
requencyTolerance. .. .. ... .. .. .. .0.005 %
FrequencyControl .. ... .. .. .. ... .. .PLL (phaselock loop)Synthesizer
OperatingTemperatureRange . .. .. -30°C to+ 50°C
Microphone .. .. .. .. ... .. .. .. ... .. .Plug-in dynamic
InputVoltage. ... .. .. .. ... .. .. .. ... 13.8VDCnom.(positive ornegativeground)
CurrentDrain .. .. ... .. .. .. ... .. .. .Transmit:AMfull mod.,1.5A(maximum)
Receive:Squelched,0.3A;
fullaudio output,1.2A(nominal)
Size . ... .. .. .. ... .. .. .. ... .. .. .. ..8-5/8”D x7-9/32”W x2-13/64”H
Weight .... .. .. .. ... .. .. .. ... .. .. ..4 lbs.
AntennaConnector ... .. .. .. ... .. ..UHF;SO-239
Meter .. .. .. .. ... .. .. .. ... .. .. .. ... .Illuminated;indicatesrelativepower output,
receivedsignal strengthandVSWR
TRANSMITTER
PowerOutput .. .. ... .. .. .. ... .. .. ..4 watts
Modulation .. .. .. ... .. .. .. ... .. .. ..AM (AmplitudeModulation)
FrequencyResponse . .. .. ... .. .. .. .300to3000 Hz
OutputImpedance .. .. ... .. .. .. ... .50ohms,unbalanced
RECEIVER
Sensitivity ... .. .. ... .. .. .. ... .. .. ..Less than1µV for10 dB(S+N) /N
Selectivity ... .. .. ... .. .. .. ... .. .. ..6 dB@ 7KHz,60 dB@ 10KHz
ImageRejection .... .. .. .. ... .. .. ..80 dB,typical
Adjacent-ChannelRejection . .. ... ..60 dB,typical
IFFrequencies .. ... .. .. .. ... .. .. .. .Double Conversion:1st:10.695MHz
2nd:455 KHz
AutomaticGain Control(AGC) . .. .. .Lessthan 10dB changeinaudio outputfor
inputsfrom 10to 50,000microvolts
RFGainControl .. .. .. ... .. .. .. ... ..Adjustable foroptimum signalreception
NoiseBlanker ... .. ... .. .. .. ... .. .. .RFtype
Squelch .. .. .. ... .. .. .. ... .. .. .. ... .Adjustable;thresholdlessthan1µV
AudioOutput Power . .. .. ... .. .. .. .4watts
FrequencyResponse . .. .. ... .. .. .. .300to3000 Hz
Distortion .... .. .. ... .. .. .. ... .. .. ..Less than5% @3watts@ 1000Hz
Built-inSpeaker .. .. .. ... .. .. .. ... ..8 ohms,5w
ExternalSpeaker(Notsupplied) ......8ohms;disablesinternalspeaker
whenconnected
PASYSTEM
PowerOutput .... .. .. .. ... .. .. .. ...4 wattsinto externalspeaker
External SpeakerforPA. .. .. ... .. .. .8ohms,when PA-CBswitch isin PA,
(Not Supplied) ... .. ... .. .. .. ... .. ..The PAspeakeralso monitorsthereceiver;
separatejack provided
(SPECIFICATIONSSUBJECTTOCHANGEWITHOUT NOTICE)
WARNING:This productcontains lead,a chemicalknown to theState ofCalifornia
tocause cancerand birthdefects orother reproductiveharm..
Washhands afterhandling.
The COBRA 29 LTD CHR transceiver represents one
of the most advanced AM two-way radios used as a
Class D station in the Citizens Radio Service.This
unit features advanced Phase Lock Loop (PLL)
circuitry providing complete coverage of all 40
CB channels.
1 26.965 21 27.215
2 26.975 22 27.225
3 26.985 23 27.255
4 27.005 24 27.235
5 27.015 25 27.245
6 27.025 26 27.265
7 27.035 27 27.275
8 27.055 28 27.285
9 27.065 29 27.295
10 27.075 30 27.305
11 27.085 31 27.315
12 27.105 32 27.325
13 27.115 33 27.335
14 27.125 34 27.345
15 27.135 35 27.355
16 27.155 36 27.365
17 27.165 37 27.375
18 27.175 38 27.385
19 27.185 39 27.395
20 27.205 40 27.405
Channel Channel
CB Freq. CB Freq.
Channel In MHz Channel In MHz

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