Cobra 18 WXST II, User Manual

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19
Accessories
18
Specifications
GENERAL
CHANNELS . . . . . . . . . . . . . . . . . . . . . . . . .CB - 40 CH
WEATHER – 10CH
FREQUENCY RANGE . . . . . . . . . . . . . . . .CB - 26.965 TO 27.405 MHZ
WEATHER – 161.650 TO 163.275
FREQUENCY TOLERANCE . . . . . . . . . . .0.005 %
FREQUENCY CONTROL . . . . . . . . . . . . .PLL (PHASE LOCK LOOP) SYNTHESIZER
OPERATING TEMPERATURE
RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-30° C TO + 65° C
MICROPHONE . . . . . . . . . . . . . . . . . . . . . .PLUG-IN DYNAMIC
INPUT VOLTAGE . . . . . . . . . . . . . . . . . . . 13.8VDC nom. (negative ground)
CURRENT DRAIN TRANSMIT: AM FULL MOD., 1.4A (MAXIMUM)
RECEIVE: SQUELCHED, 0.9 A;
FULL AUDIO OUTPUT, 1.2A (NOMINAL)
SIZE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7/8” D X 6-3/4” W X 1-7/8” H
WEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.25 LBS.
ANTENNA CONNECTOR . . . . . . . . . . . UHF; SO-239
METER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LED; INDICATES RELATIVE POWER
OUTPUT AND RECEIVED SIGNAL STRENGTH
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 10dB (S+N)
SELECTIVITY . . . . . . . . . . . . . . . . . . . . . . . 6 dB @ 7 KHZ, 60 DB @ 10KHZ
IMAGE REJECTION . . . . . . . . . . . . . . . . . 60 dB, TYPICAL
ADJACENT-CHANNEL REJECTION . . 50 dB, TYPICAL
ATOMATIC NOISE LIMITER . . . . . . . . . BUILT-IN
WEATHER
SENSITIVITY . . . . . . . . . . . . . . . . . . . . . . . LESS THAN 1 ΜV FOR 12 dB SINAD
IF-FREQUENCY . . . . . . . . . . . . . . . . . . . . DUAL CONVERSION
AUDIO OUTPUT . . . . . . . . . . . . . . . . . . . MAXIMUM 1 W AT 10% DISTORTION
FREQUENCY RESPONSE . . . . . . . . . . . 300 – 3000 HZ AT -6 dB
Frequency Ranges
The COBRA 18 WX ST II 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 pro-
viding complete cov er age of all 40 CB chan nels and all
10 weather channels as shown below.
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
Weather Weather
Freq.
Channel In MHz
1 162.550
2 162.400
3 162.475
4 162.425
5 162.450
6 162.500
7 162.525
8 161.650
9 161.775
10 163.275
18WXSTIIC_MANL_ENG.indd 18-19 11/14/13 9:09 AM