Cobra 38wxst Handheld Tranciever Manual

							Operation Operation
15
Note
The 10 National Weather
Channels include 7 NOAA 
and 3 Canadian channels.
These channels provide 
full coverage to keep you 
informed of  weather 
conditions, 24 hours a day,
7 days a week.
For a list of weather 
frequencies see specifications
in the Frequency Ranges 
section on page 36.
Note
Your HH 38 WX ST has a 
special auto squelch circuit
for weather transmission
which disables your squelch
control.
14To return to normal CB operation,push and
releasethe       CB/WX key again.
The WX icon will disappear.
Weather Channels
10 National Weather Channels provide 
weather transmission reception.
Weather
Channels
ScanFunc
CH9/19 LockCB/WXDW
Pwr Saver
PUSH &
RELEASE
PWR SAVEWX
SCANDWFUNC
09SIGNALTo change weather channels pushthe     
CHANNEL UP/DOWN arrow keys.
At times, different channels can be received.
Select the one with the clearest audio quality.
ScanFunc
CH9/19 LockCB/WXDW
Pwr Saver
PUSH &
RELEASE
PWR SAVEWX
SCANDWFUNC
SIGNALPush and releasethe       CB/WX key and the
current weather channel will appear.1
2
3
Note
An agency of the U.S.
Department of Commerce,
NOAA operates 380 stations
which reach about 90% of the
U.S. population. If you cannot
receive a weather station, you
may not have one in your area.
If you wish to receive a listing 
of NOAA Weather Radio
Transmitter locations, contact
your nearest National Weather
Service Office, or write to:
National Weather Service 
(Attn: W/OM11), NOAA
Silver Spring, MD 20910
PWRS
LIGHT
PWRS 
						

							Power Saver (HI/LOW)
Reduces transmit power output to 1 watt to
extend battery life.
Operation Operation
1716
Power Saver
(HI/LOW)
Note
The low power setting cuts 
the transmitting range in 
half, but the receiving range 
is not affected.ScanFunc
CH9/19 LockCB/WXDW
Pwr Saver
PUSH &
RELEASE
SAVEWX
SCANDWFUNC
40SIGNAL PWR SAVE
Push and releasethe       key.
The PWR Save icon will appear and the
FUNCTION icon will disappear.
To exit Power Saver (HI/LOW) mode:
Push and releaseFUNCTION key.
FUNCTION icon will be displayed.
Push and releasethe       key.
FUNCTION and PWR Save icon will disappear 
2PWRS
PWRS
Note
Battery life is increased
approximately 50% while in
Battery Power Save Mode is
activated. This reduces transmit
power output to 1 watt.
Push and releasethe     FUNCTION key.
FUNCTION icon will be displayed.1
ScanFunc
CH9/19 LockCB/WXDW
Pwr Saver
PRESS &
RELEASE
PWR SAVEWX
WX
SCANFUNC
40
FUNC
FUNCFunc
2
1
FUNC
Func
3 
						

							Operation
18
Battery Capacity
LevelBattery Capacity Level
To monitor the remaining power level of the 
HH 38 WX ST battery: check battery icon bands.
Note
Battery life is approximately 
20 hours under normal use 
conditions.
Operation
19
Scan
DW
Func
CH9/19BAT
HI/LO
Lock
CB/WX
PWR SAVEWX
SCANDWFUNC
SIGNAL 
flashing 
icon
BATTERY icon will flash if batteries are low.
Replace batteries as soon as possible.
Note
SoundTracker® gives you 
clearer, cleaner reception to
improve CB communications
while on the air.
The SoundTracker® System
While previous systems only “blanket out” or 
limit noise in higher sound frequencies, the 
revolutionary new SoundTracker®  System 
actually reduces noise while leaving the signal
intact in the reception mode. In the transmission
mode, it actually strengthens the signal, providing
you with a significant reduction in noise on
reception and transmission.
Sound clarity is measured by the ratio 
of the signal level to the noise level.
The higher the signal-to-noise ratio,
the better the sound.
How SoundTracker® Works
On Reception - “Cuts noise coming in”
With a normal CB, distant signals fall below 
the squelch level and are unintelligible. With a
SoundTracker®  CB. the noise level is cut up to
90%, which increases the signal-to-noise ratio 
and dramatically improves signal clarity. This also
allows you to significantly reduce the squelch
level, which greatly expands your listening range.
On Transmission - “Strengthens signals going out”
A SoundTracker®  CB strengthens the transmit 
signal by more effectively using the available 
RF power output of the CB. The result is improved
transmission signal clarity and an expanded 
transmission range. 
						

							Operation Operation
2120
Activating
SoundTracker®
Note
This engages the
SoundTracker® system and
reduces the noise level.
Activating SoundTracker®
ScanFunc
CH9/19DW
LockCB/WX Pwr Saver
PUSH &
RELEASE
PWR SAVEWX
SCANDWFUNC
40SIGNAL 
Push and releasethe     ST key.1
The          SOUNDTRACKER icon will appear.
FUNC
40SIGNAL
Selectany unused channel on your CB.
Testing
SoundTracker®Testing SoundTracker®
1
Fully       counterclockwiseopens the “gate” and
all signals enter. Turn the knob until it stops.2
PWR SAVEWX
SCANDWFUNC
40SIGNAL 
Squelch Volume
Off
Deactivatesoundtrack mode by pressing
key if the         icon is displayed3
continued 
						

							Turnthe volume up louder than your normal
listening level.
Operation
23
Operation
22
3
Squelch Volume
Off
Push and releasethe     ST key.
The         SOUNDTRACKER icon will appear.
*Notice the significant reduction in noise.
4
ScanFunc
CH9/19DW
LockCB/WX Pwr Saver
PUSH &
RELEASE
PWR SAVEWX
SCANDWFUNC
40SIGNAL 
Note
At times you may experience 
different levels of noise 
reduction. Different terrains 
and environments will effect 
the SoundTracker® System’s
performance.
To disengage SoundTracker® push and release
ST key again.5
ScanFunc
CH9/19DW
LockCB/WX Pwr Saver
PUSH &
RELEASE
PWR SAVEWX
SCANDWFUNC
40SIGNAL 
icon will disappear.6
PTT
CH
LIGHTPUSH &
RELEASE
Lighted Display
To illuminate display,push and releaselight key.
Light will remain on for 10 seconds.1
Lighted Display 
						

							Operation Operation
2524
Note
PTT , LIGHT, VOLUME,
SQUELCH and LOCK functions
are still operational while the
LOCK function is activated.
Lock Key
Purpose is to lock most functions to avoid
accidental actuation.
Lock Key
Scan
DW
Func
CH9/19BAT
HI/LO
Lock
CB/WX
PUSH &
HOLD
PWR SAVEWX
SCANDWFUNC
40SIGNAL
To  lock,push and hold the      LOCK key for two
seconds. The        LOCK icon will appear.
To unlock,push and holdLOCK key for 2 
seconds again.1
Note
Due to the characteristics of 
CB transmissions, it is 
necessary to use an external
car roof/truck magnet mounted
antenna (item # ATW-400)
and a BNC adapter 
(item # CA-43)to receive 
optimal performance while in
your vehicle. See Accessories
section on page 39.
Note
DC/Power Cord is provided.
To increase range as a
portable, use CA41 telescopic
loaded long range antenna.
In Vehicle UseIn Vehicle Use
The HH 38 WX ST can be connected to your 
cigarette lighter with the provided adapter.
This power connection does NOT charge the
batteries.
ScanFunc
CB/WX Pwr Saver
CH9/19DW
PWR SAVE WX
SCAN DW EMGFUNC40SIGNAL
POWER  
						

							How Your CB Can Serve You How Your CB Can Serve You
2726
Note
If you wish to receive a listing of
NOAA Weather Radio
Transmitter locations, contact
your nearest National Weather
Service Office,
or write to:
National Weather Service 
(Attn: W/OM11), NOAA
Silver Spring, MD 20910
For a list of weather frequencies
see specifications in the
Frequency Ranges section on
page 36.
Weather Channel Messages
Local weather reports are provided by NOAA
(National Oceanic Atmospheric Administration)
24 hours a day, 7 days a week. An agency of the
U. S. Department of Commerce, NOAA operates 
380 stations which reach about 90% of the U. S.
population. If you cannot receive a weather 
station, you may not have one in your area.
A similar network of 15 stations broadcasts 
continuous weather information across much 
of southern Canada. •Warn of traffic problems
•Provide weather and road data
•Provide help in event of an emergency 
•Provide direct contact with home or office 
•Assist police by reporting erratic drivers
•Get “local information” to find destination
•Communicate with family and friends
•Suggest spots to eat and sleep
•Keep you alert while traveling
A Few Rules You Should Know
A.Conversations cannot last more than 5 minutes
with another station. A one minute break is
required to let others use the channel.
B.You cannot blast others off the air by use of 
illegally amplified transmitters or illegally 
high antennas.
C. You cannot use CB to promote illegal 
activities.
D.Profanity is not allowed.
E. You may not transmit music with a CB.
F.Selling of merchandise and/or services is               
prohibited.
Weather Channel
Messages
A Few Rules 
Yo u  S hould 
Know 
						

							How Your CB Can Serve You How Your CB Can Serve You
2928
The FCC gives these examples of permitted and
prohibited messages for channel 9. These are
only guidelines and not all-inclusive:
Permitted      Example Message
Yes“Tornado sighted six miles north 
of town.”
No “Post number 10.
No tornado sighted.”
Yes“Out of gas on I-95 at mile 
marker 211.”
No “Out of gas in my driveway.”
Yes“Four car accident on I-94 at 
Exit 11. Send police and 
ambulance.”
No “Traffic moving smoothly on I-94.”
Yes“Weather Bureau has issued 
thunderstorm warning.
Bring sailboat into port.”
No “Attention motorists.
Weather Bureau advises snow 
tomorrow will accumulate 
4 to 6 inches.”
Yes“Fire in building at 539 Main,
Evanston.”
No “Halloween patrol number 3.
All quiet.”
1. Set to channel 9 for emergencies
Be sure antenna is properly connected.
2. CB Distress Data
When transmitting an emergency, you should
request a “REACT BASE” and provide the CB 
distress data (called CLIP):
Call SignIdentify yourself.
LocationBe exact.
InjuriesNumber. Type. Trapped?
ProblemGive details and help needed.
Transmit CLIPrepeatedly so any monitor can assist.
Channel 9
Emergency
Messages
Note
If no response on channel 9,
try channels 19 or 14. 
						

							How Your CB Can Serve You How Your CB Can Serve You
3130
Code Meaning   
10-29 Time is up for contact
10-30  Does not conform to FCC rules
10-33      Emergency traffic   
10-34 Trouble at this station
10-35      Confidential information
10-36      Correct time is
10-37      Wrecker needed at
10-38      Ambulance needed
10-39      Message delivered
10-41      Turn to channel
10-42      Traffic accident at
10-43      Traffic tie up at
10-44      Have a message for
10-45      All units within range please report
10-50      Break channel
10-60      What is next  message number?
10-62      Unable to copy. Use phone
10-63     Net directed to
10-64      Net clear
10-65      Awaiting your next message/assignment
10-67      All units comply
10-70      Fire at
10-71      Proceed, transmission in sequence
10-77     Negative contact
10-81 Reserve hotel room for
10-82 Reserve room for
10-85 My address is
10-91 Talk closer to mic
10-93      Check my frequency on this channel
10-94 Give me a long count
10-99      Mission completed, all units secure
10-200 Police needed atCB 10-Codes
Citizen Bands have adopted the “10-CODES”for
standard questions and answers. These codes
provide quick and easy communication, especially
in noisy areas. Following are some of the more
common codes and meanings:
Code Meaning           
10-1      Receiving poorly
10-2      Receiving well
10-3      Stop transmitting
10-4      OK, message received
10-5      Relay message
10-6      Busy, stand by
10-7      Out of service, leaving
10-8      In service, subject to call
10-9      Repeat message
10-10      Transmission completed standing by
10-11      Talking too rapidly
10-12      Visitors present
10-13      Advise weather/roads 
10-16      Make pick up at
10-17      Urgent business
10-18      Anything for us?
10-19      Return to base
10-20      My location is
10-21      Call by phone
10-22  Report in person to
10-23      Stand by
10-24      Completed last assignment
10-25      Can you contact
10-26      Disregard last info
10-27  Moving to channel
10-28      Identify your station
CB 10-Codes 
						

							Channel Channel Weather
CB Freq. CB Freq. Weather Freq.
Channel In MHz Channel In MHz Channel In MHz
HH38 WX ST Specifications Frequency Ranges
3332
GENERAL
CHANNELS . . . . . . . . . . . . . . . . . . CB - 40 CH 
WEATHER - 10 CH
FREQUENCY RANGE . . . . . . . . . . CB - 26.965 TO 27.405 MHZ
WEATHER - 161.650 TO 163.275 MHZ 
FREQUENCY TOLERANCE . . . . . 0.005 %
FREQUENCY CONTROL  . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMPERATURE 
RANGE . . . . . . . . . . . . . . . . . . . . . . -30° C TO + 65° C
MICROPHONE. . . . . . . . . . . . . . . . ELECTRET, PUSH-TO-TALK
INPUT VOLTAGE  . . . . . . . . . . . . . 9V VDC
12 VDC, EXTERNAL
ANTENNA CONNECTOR . . . . . . . TYPE BNC
METER . . . . . . . . . . . . . . . . . . . . . . LCD DISPLAY, ICONS
WEIGHT . . . . . . . . . . . . . . . . . . . . . 9 oz.
TRANSMITTER
POWER OUTPUT . . . . . . . . . . . . . 4.0 W AT 13.8 VDC - HIGH, 1.0 IN LOW
MODULATION . . . . . . . . . . . . . . . AM
FREQUENCY RESPONSE . . . . . . . 300 - 3000 HZ AT -6 DB
OUTPUT IMPEDANCE . . . . . . . . . 50 OHMS, UNBALANCED
RECEIVER
CB
SENSITIVITY. . . . . . . . . . . . . . . . . . LESS THAN 1 uV FOR 10 DB S/N
IF FREQUENCY . . . . . . . . . . . . . . . DUAL CONVERSION
1 ST - 10.690 MHZ, 2ND - 455 KHZ
AUDIO OUTPUT . . . . . . . . . . . . . . 500 mW MAXIMUM AT 10 % DISTORTION
FREQUENCY RESPONSE . . . . . . . 300 - 3000 HZ AT -6 DB
2ND IF IMAGE REJECTION . . . . . GREATER THAN 60 DB
ADJACENT CH. REJECTION . . . . 50 DB MIN.
AUTOMATIC NOISE LIMITER . . . BUILT- IN
FREQUENCY CONTROL  . . . . . . . PLL (PHASE LOCK LOOP)
WEATHER
SENSITIVITY. . . . . . . . . . . . . . . . . . LESS THAN 1 uV FOR 12 DB SINAD
IF FREQUENCY . . . . . . . . . . . . . . . DUAL CONVERSION
1st: -10.690 MHz
2nd: -455 KHz
AUDIO OUTPUT . . . . . . . . . . . . . . MAXIMUM 500 mW AT 10 % DISTORTION
FREQUENCY RESPONSE . . . . . . . 300 - 3000 HZ AT -6 DBThe COBRA HH 38 WX ST 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 and 10 weather channels as shown below.
126.965 21 27.215 1 162.550
226.975 22 27.225 2 162.400
326.985 23 27.255 3 162.475
427.005 24 27.235 4 162.425
5162.450
527.015 25 27.245 6 162.500
627.025 26 27.265 7 162.525
727.035 27 27.275 8 161.650
827.055 28 27.285 9 161.775
927.065 29 27.295 0 163.275
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
*Canadian 
weather channels
are 8, 9 and 10.