Cobra 20XTR Instruções de Operação descarregar pdf (Página 13)

Specifications

GENERAL

CHANNELS . . . . . . . . . . . . . . . . . . . . . . . CB - 40 CH

FREQUENCY RANGE. . . . . . . . . . . . . . . CB - 26.965 TO 27.405 MHZ

FREQUENCY TOLERANCE . . . . . . . . . . 0.005 %

FREQUENCY CONTROL . . . . . . . . . . . PLL (PHASE LOCK LOOP) SYNTHESIZER

OPERATING TEMP. 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 . . . . . . . . . . . . . . . . . . . . . . . . . . 3.25 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

AUTOMATIC NOISE LIMITER . . . . . . . BUILT-IN

Specifications

Frequency

Ranges

Frequency Ranges

The Cobra 20 XTR 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.

Channel Channel

CB Frequency CB Frequency

Channel In MHz Channel In MHz

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

Specifications

20 XTR MANUAL.qxd 4/17/03 4:56 PM Page 20

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