Cobra 2010wx Base Cb Tranciever Manual

40 CHANNEL
SOLID STATE CITIZENS BAND
SSB/AM TWO-WAY  RADIO
BASE STATION
With Seven Weather Channels and
NOAA Emergency Alert Tone
OPERATING INSTRUCTIONS FOR YOUR
Model 2010 GTL WX 

How To  Use Your
SOLID STATE CITIZENS BAND
SSB/AM 2-WAY RADIO BASE STATION
Model 2010 GTL WX
Contents     Page
The CB Story ....................................................................................1
Section I: Introduction .....................................................................2
Section II: Specifications .............................................................3, 4
Section III: Installation ....................................................................5
Section IV:...

The Citizens Band lies between the shortwave broadcast and 10-meter Amateur radio
bands, and was established by law in 1949. The Class D two-way communications
service was opened in 1959. (CB also includes a Class A citizens band and Class C
remote control frequencies.)
FCC regulations permit only ÒtransmissionsÓ (one party to another) rather than
ÒbroadcastsÓ (to a wide audience). Thus, advertising is not allowed on CB Channels
because that is Òbroadcasting.Ó
The CB Story
1
Replacement or substitution...

Section I Introduction
FREQUENCY RANGE
The COBRA 2010 GTL WX transceiver represents one of the most advanced AM
base station 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 channels as shown below.
CB Channel Freq.  CB Channel Freq.
Channel in MHz Channel in MHz
1 26.965
2 26.975
3 26.985
4 27.005
5 27.015
6 27.025
7 27.035
8 27.055
9 27.065
10 27.075
11 27.085
12 27.105
13 27.115
14 27.125...

       Section II Specifications
GENERAL
Channels 40.
Frequency Range 26.965 to 27.405 MHz.
Frequency Control Phase Lock Loop (PLL) synthesizer.
Frequency Tolerance±130 Hz Typical.
Operating Temperature Range -30° C to + 50° C.
Microphone Plug-in type; 600W dynamic.
Power Source 120V AC nominal.
13.8V DC nominal.
(Positive or negative ground).
Power Consumption
Transmit: AM full mod., 65 watts.
SSB 70 watts.
Receive: Squelched, 30 watts.
Full audio, 40 watts.
Current Drain (13.8V DC)
Transmit: AM and...

Section II Specifications (Cont.)
RECEIVER
Sensitivity SSB: 0.25 
mV for 10dB (S+N)/N at greater
than 1/2-watt of audio output.
AM: 0.5
mV for 10 dB (S+N)/ at greater
than 1/2-watt of audio output.
Selectivity AM: 6dB @ 3 KHz, 50 dB @ 9 KHz.
SSB: 6 dB @ 1.1 KHz, 60 dB @ 2.3 KHz.
Image Rejection More than 65 dB.
IF Frequency AM: 7.8 MHz 1st IF, 455 KHz 2nd IF.
SSB: 7.8 MHz.
Adjacent-Channel Rejection 60 dB AM & 70 dB SSB.
AM and SSB RF Gain Control 40 dB adjustable for optimum signal
reception.
Automatic...

5
Section III Installation
LOCATION
Prior to beginning operation of the transceiver, a basic installation must be prepared.
Installation of the transceiver itself is a rather simple procedure.
In selecting the location for the unit, two basic factors must be considered:
1. Access to a 120V, 60 Hz power source.
2. The location must be convenient for running the antenna lead-in cable if outside
antenna installation is proposed.
BASE STATION ANTENNA
Since the maximum allowable power output of the...

 Section IV Operation
CONTROLS AND INDICATORS
There are eighteen controls, 2 meters, 1 LCD and 1 jack  on the front panel of your
2010 GTL WX.
A. CONTROL FUNCTIONS
1. POWER SWITCH. Press in to turn on radio. Press in, again, and release to turn off
radio.
2. DYNAMIKE. Adjusts the microphone gain in the transmit  mode. This controls the
gain to the extent that full talk power is available several inches away from the
microphone.
3. VOLUME. Turn clockwise to set the desired listening level.
4. SQUELCH ....

7
Section IV Operation (Continued)
6. SWR CAL CONTROL . In order for you to achieve maximum radiated power and
the longest range, it is important that your antenna be in good condition, properly
adjusted and matched to your transceiver.  The Built-in SWR (standing wave
ratio) meter lets you easily measure your antenna condition. To operate this
function, connect your antenna to the transceiver antenna output connector.
Select a channel near the middle of the band such as 21 or the channel you plan
to use...

8
Section IV Operation (Continued)
15. PRESS-TO-TALK MICROPHONE. The receiver and transmitter are controlled by
the press-to-talk switch on the microphone. Press the switch and the transmitter
is activated; release switch to receive. When transmitting, hold the microphone
two inches from the mouth and speak clearly in a normal voice. The radio is
supplied with a low-impedance 500-ohm dynamic desktop microphone. For
installation instructions on other microphones, see ALTERNATE MICROPHONES
AND...