Operating instructions
29 LX HD LE Specifications
3938
Frequency Ranges
GENERAL
CHANNELS  CB - 40 CH 
FREQUENCY RANGE  CB - 26.965 TO 27.405 MHZ 
  WX - 162.400 TO 162.775 MHZ
FREQUENCY TOLERANCE  0.005 %
FREQUENCY CONTROL   PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMPERATURE 
RANGE  -30° C TO + 50° C
MICROPHONE  Plug-in dynamic
INPUT VOLTAGE    13.2VDC nom. (positive or negative ground) 
Current Drain  Transmit: AM full mod., 1.5A (maximum)  
  Receive: Squelched, 0.3A;  
  full audio output, 1.2A (nominal)
Size   ..............................................................8-5/8” D x 7-9/32” W x 2-13/63” H
Weight ..........................................................4 lbs.
Antenna Connector .................................UHF; SO-239
Meter .............................................................Indicates relative
  power output received  
  signal strength, and vswr 
TRANSMITTER
Power Output ............................................4 watts
Modulation .................................................AM (Amplitude Modulation)
Frequency Response ...............................300 to 3000 Hz
Output Impedance ..................................50 ohms, unbalanced
RECEIVER
Sensitivity ....................................................Less than 1 µV for 10 dB (S+N) /N
Selectivity ....................................................6 dB @ 7 KHz, 60 dB @ 10KHz
Image Rejection ........................................80 dB, typical
Adjacent-Channel Rejection ................60 dB, typical
IF Frequencies ...........................................Double Conversion: 1st: 10.695 MHz 
  2nd: 455 KHz
Automatic Gain Control (AGC) ............Less than 10 dB change in audio
  output for inputs from 10 to 50,000  
  microvolts
RF Gain range ............................................40 db
Noise Blanker .............................................RF type
Squelch ........................................................Adjustable; threshold less than 1µV
Audio Output Power ...............................4 watts
Frequency Response ...............................300 to 3000 Hz
Distortion ....................................................Less than 7% @3 watts @ 1000 Hz
Built-in Speaker .........................................8 ohms, 5w
External Speaker (Not supplied)............ 8 ohms; disables internal speaker 
  when connected
PA SYSTEM
Power Output ............................................4 watts into external speaker
External Speaker for PA..........................8 ohms 4 Watts min. 
(Not Supplied) ...........................................the PA speaker also monitors the
  receiver; separate jack provided
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
The Cobra 29 LX HD LE transceiver represents one 
of the most ad vanced 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 cov er age of all 40 CB 
chan nels.
1  26.965  21  27.215  1  162.550
2  26.975  22  27.225  2  162.400
3  26.985  23  27.255  3  162.475
4  27.005  24  27.235  4  162.425 
5  27.015  25  27.245  5  162.450
   6  162.500
6  27.025  26  27.265  7  162.525
7  27.035  27  27.275  8  161.650
8  27.055  28  27.285  9  161.775
9  27.065  29  27.295  10  163.275
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.  WX  Freq. 
Channel  In MHz  Channel  In MHz  Channel In MHz
29LXHDLE_MANL.indd 38-39 9/2/14 3:29 PM










