Cobra Electronics 148 NW ST specifications NW ST Specifications Limited One Year Warranty

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148 NW ST manual 3.3 6/15/99 3:12 PM Page 32

148 NW ST Specifications

Limited One Year Warranty

GENERAL

 

CHANNELS

40 AM,40 LSB, 40 USB

FREQUENCY RANGE

26.965 TO 27.405 MHZ

FREQUENCY CONTROL

PHASE LOCK LOOP (PPL) SYNTHESIZER

FREQUENCY TOLERANCE

0.005%

FREQUENCY STABILITY

0.001%

OPERATING TEMPERATURE RANGE

-30° C TO +50° C

MICROPHONE

PLUG-IN DYNAMIC WITH PUSH-TO-TALK SWITCH

INPUT VOLTAGE

13.8V DC NOM. 15.9V MAX., 11.7V MIN.

 

(POSITIVE OR NEGATIVE GROUND)

CURRENT DRAIN

TRANSMIT: AM FULL MOD.,2.2A. SSB 12

 

WATTS PEP OUTPUT,2A.

 

RECEIVE:SQUELCHED, 0.25A;MAX. AUDIO

 

OUTPUT, 0.6A.

SIZE

2-3/8”H X 7-7/8”W X 9-1/4”D

WEIGHT

5 LBS.

ANTENNA CONNECTOR

UHF; SO-239

 

COLOR LIGHT EMITTING DIODE

METER

ILLUMINATED;INDICATES RELATIVE POWER

 

OUTPUT, RECEIVED SIGNAL STRENGTH AND VSWR

TRANSMITTER

 

POWER OUTPUT

AM 4 WATTS, SSB 12 WATTS,PEP

MODULATION

HIGH- AND LOW-LEVEL CLASS B, AMPLITUDE

 

MODULATION

INTERMODULATION DISTORTION

SSB: 3RD ORDER, MORE THAN -25dB

 

5TH ORDER, MORE THAN -35dB

SSB CARRIER SUPPRESSION

55 dB

UNWANTED SIDEBAND

50 dB

FREQUENCY RESPONSE

AM AND SSB; 300 TO 2500 HZ

OUTPUT IMPEDANCE

50 OHMS,UNBALANCED

OUTPUT INDICATORS

METER SHOWS RELATIVE RF OUTPUT POWER

 

AND SWR.TRANSMIT LED GLOWS RED

 

WHEN TRANSMITTER IS IN OPERATION.

RECEIVER

 

SENSITIVITY

SSB:0.25 µV FOR 10 dB (S+N) /N AT

 

GREATER THAN 1/2-WATT OF AUDIO OUTPUT

 

AM: 0.5 µV FOR 10 dB (S+N) /N AT

 

GREATER THAN 1/2-WATT OF AUDIO OUTPUT

SELECTIVITY

AM:7.8 KHZ,50 dB @ 9KHZ

 

SSB: 6 dB @ 1.1 KHZ, 60 dB @ 2.3 KHZ

IMAGE REJECTION

MORE THAN 65 dB

ADJACENT-CHANNEL REJECTION

60 dB AM & 70 dBSSB

IF FREQUENCIES

AM:7.8MHZ 1ST IF,455 KHZ 2 ND IF

 

SSB: 8.7 MHZ

AM & SSB RF GAIN CONTROL

40 dBADJUSTABLE FOR OPTIMUM SIGNAL

RECEPTION

 

AUTOMATIC GAIN CONTROL (AGC)

LESS THAN 10 dB CHANGE IN AUDIO OUTPUT

FOR INPUTS FROM 10 TO 100,000 MICROVOLTS

NOISE BLANKER

RF TYPE, EFFECTIVE ON AM AND SSB

ANL

SWITCHABLE

SQUELCH

ADJUSTABLE;THRESHOLD LESS THAN 0.25 µV

VOICE LOCK RANGE

+/- 1.5 KHZ

AUDIO OUTPUT POWER

4 WATTS INTO 8 OHMS

FREQUENCY RESPONSE

300 TO 2500 HZ

DISTORTION

LESS THAN 0 % @ 0 WATTS @ 0000 HZ??

BUILT-IN SPEAKER

8 OHMS,5 WATTS

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 OHM,4 WATTS MIN.

(NOT SUPPLIED)

 

(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)

COBRA ELECTRONICS CORPORATION warrants that its COBRA CB radios, and the component parts thereof, will be free of defects in workmanship and materials for period of two (2) year from date of first consumer purchase.This war- ranty may be enforced by the first consumer purchaser, pro- vided that the product is utilized within the U.S.A.

COBRA will, without charge, repair or replace, at its option, defective CB radios, products or component parts upon delivery to the COBRA factory Service Department, accom- panied by proof of the date of first consumer purchase, such as a duplicated copy of a sales receipt.

You must pay any initial shipping charges required to ship the product for warranty service, but the return charges will be at Cobra’s expense, if the product is repaired or replaced under warranty.

Exclusions:This limited warranty does not apply; 1.) to any product damaged by accident; 2.) in the event of misuse or abuse of the product or as a result of unauthorized alter- ations or repairs; 3.) if the serial number has been altered, defaced or removed; 4.) if the owner of the product resides outside the U.S.A.

All implied warranties, including warranties of merchantabili- ty and fitness for a particular purpose are limited in duration to the length of this warranty. COBRA shall not be liable for any incidental, consequential or other damages; including, without limitation, damages resulting from loss of use or cost of installation.

Some states do not allow limitations on how long an implied warranty lasts and / or do not allow the exclusion or limita- tion of incidental or consequential damages, so the above limitations may not apply to you.

All implied warranties,including warranties of mer- chantability and fitness for a particular purpose are lim- ited in duration to the length of this warranty. COBRA shall not be liable for any incidental,consequential or other damages; including,without limitation,damages resulting from loss of use or cost of installation.

Some states do not allow limitations on how long an implied warranty lasts and / or do not allow the exclu- sion or limitation of incidental or consequential dam- ages,so the above limitations may not apply to you.

Cobra Electronics

Corporation

6500 West Cortland Street Chicago, Illinois 60707

32

33

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Contents Features of This Product How to Use Your Cobra 148 NW STLocationLocation InstallationMounting and Connection Mounting and ConnectionNW ST manual 3.3 6/15/99 312 PM Antennas Ignition Noise Interference Marine InstallationCB Antenna CB AntennaOperation Setting ChannelTurning On SelectorTo Receive MeterS-MeterSoundTrackerTM System How SoundTrackerTM WorksActivating OFF Noise Blanker Automatic Noise Limiter SwitchSoundTracker Hi/Low/ ToneDimmer Control Dimmer Control USB/AM/LSB SwitchRF Gain Control RF Gain ControlSquelch is the control gate for incoming signals Setting Squelch Setting SquelchGate set to Desired Squelch Setting DSS Gate closedCalibrate for SWR Standing Wave Ratio Calibrate For SWR Standing Wave RatioRF Meter TransmitTransmit PA Public External Speaker External SpeakerAddress PA Public AddressBase Station Operation From 120V AC House Current Base Station Operation From 120V AC House CurrentTemporary Mobile Set-Up Temporary Mobile Set-Up How Your CB Can Serve YouFew Rules You Should Know Channel Emergency MessagesCB 10-Codes Permitted Example MessageFrequency Ranges Cobra Electronics Corporation NW ST Specifications Limited One Year WarrantyOrder by mail or fax Optional AccessoriesShipping & Handling Accessory Order FormAmount Shipping Order Handling Item #Am 800 pm,Monday through Friday, CST If You Think You Need ServiceIf you think you need service call FCC Regulations CB StoryFCC Warnings What’s Included with Your 148 NW STSoundTrackerTM Controls and Indicators Our Thanks to YouNW ST manual 3.3 6/15/99 312 PM