Cobra Electronics 25 WX NW ST specifications Frequency Ranges WX NW ST Specifications, General

25 WX NW ST Manual 3.3 6/15/99 1:10 PM Page 30

Frequency Ranges 25 WX NW ST Specifications

The COBRA 25 WX NW 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.

	Channel		Channel		Weather
CB	Freq.	CB	Freq.	Weather	Freq.
Channel	In MHz	Channel	In MHz	Channel	In MHz.
1	26.965	21	27.215	1	162.400
2	26.975	22	27.225	2	162.425
3	26.985	23	27.255	3	162.450
4	27.005	24	27.235	4	162.475
5	27.015	25	27.245	5	162.500
				6	162.525
6	27.025	26	27.265	7	162.550
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

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GENERAL
CHANNELS	CB - 40 CH
FREQUENCY RANGE	CB - 26.965 TO 27.405 MHZ
	WX - 162.400 TO 162.550 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	13.8VDC 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 6-3/8”W X 2-13/64” H
WEIGHT	4 LBS.
ANTENNA CONNECTOR	UHF; SO-239
METER	ILLUMINATED;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 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;SEPAR ATE JACK PROVIDED

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 -6dB

(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)

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