background image

Operation

Warranty

Introduction

21

Nothing 

comes close to a Cobra

®

Customer Assistance

20 English

General Specifications

21

Nothing 

comes close to a Cobra

®

General Specifications

Nominal

Unit

Nominal

Unit

C. Transmitter

1. Power

GMRS  . . . . . . . . . . . . . . . . . . . .W

2

FRS Only  . . . . . . . . . . . . . . . . .mW

500

2. Carrier Frequency Stability  . . . ±Hz 

500

3. Modulation Limiting  . . . . . . . . kHz 

2.5

4. Carrier Attack Time  . . . . . . . . . mS 

80

5. Audio Frequency Response

@ 300 Hz  . . . . . . . . . . . . . . . . . dB

-12

@ 2500 Hz  . . . . . . . . . . . . . . . . dB

+6

6. Audio Distortion  . . . . . . . . . . . . % 

3

7. Hum Noise  . . . . . . . . . . . . . . . . dB 

30

8. Transient Frequency Behavior

a) TX On  . . . . . . . . . . . . . . . . . mS 

30

b) TX Off  . . . . . . . . . . . . . . . . . mS 

5

A. FRS/GMRS

Frequency 
Allocation and
Compatibility

Important:

Please note that Cobra

®

GMRS models with 15 Channels may
designate different channel numbers for
the same frequency. For example, a
Cobra

®

15 Channel GMRS model would

need to be tuned to Channel 11 in order 
to communicate with a 22 Channel GMRS
tuned to Channel 15. Please refer to the
chart below for channel/ frequency
number compatibility.

A = Channel No. For

22 Channel GMRS Models

B = Channel No. For 15 

Channel GMRS Models

C = Type of Radio Service
D = Frequency in MHz
E = Power in Watts

a = 2.0/0.5 (selectable)
b = 0.5

A

B

C

D

E

1 1  FRS/GMRS  462.5625  a
2 2

FRS/GMRS

462.5875  a

3 3

FRS/GMRS  462.6125  a

4 4  FRS/GMRS  462.6375  a
5 5  FRS/GMRS  462.6625  a
6 6  FRS/GMRS  462.6875  a
7 7  FRS/GMRS  462.7125  a
8 FRS 

467.5625 

b

9 FRS 

467.5875

b

10 FRS

467.6125 

b

11 FRS 

467.6375

b

12 FRS 

467.6625 

b

13 FRS 

467.6875 

b

14 FRS 

467.7125

b

15  11 

GMRS 

462.5500 

a

16 8  GMRS 

462.5750  a

17  12 

GMRS 

462.6000 

a

18 9  GMRS 

462.6250  a

19  13 

GMRS 

462.6500 a

20 10  GMRS 

462.6750 

a

21  14 

GMRS 

462.7000 

a

22 15  GMRS 

462.7250 

a

B. Receiver

1. Sensitivity

For 12 dB SINAD  . . . . . . . . . . dBm 

-121

For Call Signal Detection  . . . . dBm 

-121

2. Max. Audio Output 

@ 10% THD  . . . . . . . . . . . . . . mW

200

3. Max. S/N Ratio 

@ 1mV RF Input  . . . . . . . . . . . dB 

50

4. Squelch

a) Sensitivity . . . . . . . . . . . . . . dBm

-121

b) Attack Time  . . . . . . . . . . . . . mS 

150

c) Closing Time  . . . . . . . . . . . . mS 

200

5. Audio Frequency Response

@ 300 Hz  . . . . . . . . . . . . . . . . . dB -3
@ 2500 Hz  . . . . . . . . . . . . . . . . dB 

-10

6. Signal Displacement BW . . . . +/-kHz

5

7. Adjacent Channel Rejection  . . . dB 

60

8. Intermodulation Rejection  . . . . dB 65

9. Spurious Response Rejection . . dB 

55

D. Power Supply

1. Battery Life (5:5:90 RATIO)

With Alkaline Batteries  . . . . . . . HR 

24

2. Battery Operating Range . . . . . . V

4.2 - 6.0

Nominal

Unit

Operation

Licensing

For Products Used in the U.S.A.

FCC Licensing Required

This 2-way radio operates on GMRS (General Mobile Radio Service) frequencies 
which require an FCC (Federal Communications Commission) license. A user
must be licensed prior to operating on channels 1 through 7 or 15 through 22,
which comprise the GMRS channels of this radio. Serious penalties could result
for unlicensed use of GMRS channels, in violation of FCC rules, as stipulated in
the Communication Act’s Sections 501 and 502 (amended).

Licensed users will be issued a call sign by the FCC, which should be used 
for station identification when operating this radio. GMRS users should also
cooperate by engaging in permissible transmissions only, avoiding channel
interference with other GMRS users, and being prudent with the length 
of their transmission time.

For licensing information and application forms, please call the FCC Hotline at 
800-418-FORM. Request form #159 and form #605. Questions regarding the 
license application should be directed to the FCC at 888-CALL-FCC. Additional
information is available on the FCC’s website at www.fcc.gov.

Safety Information for microTALK

®

Radios

Your wireless handheld portable transceiver contains a low power transmitter. 
When the Talk button is pushed, it sends out radio frequency (RF) signals. 
The device is authorized to operate at a duty factor not to exceed 50%. 
In August 1996, the Federal Communications Commissions (FCC) adopted 
RF exposure guidelines with safety levels for handheld wireless devices. 

Summary of Contents for microTALK PR3150DX

Page 1: ...re you prefer For Assistance In Canada or the U S A In this user s manual you should find all the information you need to operate your microTALK radio If you require further assistance after reading t...

Page 2: ...quelch Maximum Range Extender Belt Clip Wrist Strap Memory Icon Industry Canada Notice Operation is subject to the following two 2 conditions 1 this device may not cause interference and 2 this device...

Page 3: ...Insert four 4 AAA batteries Always use high quality alkaline batteries Position batteries according to polarity markings 4 Replace battery compartment cover and belt clip Contact your local Cobra dea...

Page 4: ...on will flash in the display This will not affect the radio s ability to receive incoming transmissions Communicating With Another Person To Talk To Another Person 1 Press and hold the Talk button 2 W...

Page 5: ...to illuminate the display for ten 10 seconds Low Power Icon Hi Power Icon Operation Hi Low Button Auto Squelch Maximum Range Your microTALK radio is equipped with Auto Squelch which automatically shu...

Page 6: ...accessories are recommended To Attach Your Speaker Microphone 1 Open the Speaker Microphone tab on top of your microTALK radio 2 Insert the plug into the speaker microphone jack Signal Strength Meter...

Page 7: ...mode your microTALK radio can be used hands free automatically transmitting when you speak You can set the VOX sensitivity level to fit the volume of your voice and avoid transmissions triggered by ba...

Page 8: ...nned See page 16 for memory location scan To Program A Memory Location 1 Press the Mode button until the Memory icon and the memory location flash on the display 2 Press the Channel Up or Channel Down...

Page 9: ...n channels To Scan Channels 1 Press the Mode button until the Scan icon and the channel numbers flash on the display 2 Press the Channel Up or Channel Down button to begin scanning channels The radio...

Page 10: ...played before you entered mode functions or the channel privacy code on which during scanning you last received a transmission 14 English Mode Functions During Channel Scan while not receiving a trans...

Page 11: ...ed mode functions or the memory location on which during scanning you last received a transmission To reduce the number of memory locations being scanned you may deprogram any unwanted locations See p...

Page 12: ...ting and return to Standby mode Roger Beep Confirmation Tone Your listener will hear an audible tone when you release the Talk button This alerts the other party that you are finished talking and it i...

Page 13: ...Squelch a Sensitivity dBm 121 b Attack Time mS 150 c Closing Time mS 200 5 Audio Frequency Response 300 Hz dB 3 2500 Hz dB 10 6 Signal Displacement BW kHz 5 7 Adjacent Channel Rejection dB 60 8 Interm...

Page 14: ...ximately three 3 to four 4 weeks before contacting Cobra for status If the radio is out of warranty a letter will automatically be sent informing you of the repair charge or replacement charge If you...

Page 15: ...ory Service department accompanied 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 f...

Reviews: