Cobra Electronics PR3000DX FRS/GMRS Frequency Allocation and Compatibility, Power Supply

Using Your Radio

Operation

Speaker/Microphone Jack

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®

Introduction Operation Customer Assistance Warranty

General Specifications

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Your microTALK radio can be fitted with an external Speaker/Microphone, freeing your hands for other tasks. See page 20 for optional accessories ordering information. Only Cobra® authorized accessories are recommended.

A.FRS/GMRS Frequency Allocation and Compatibility

B. Receiver Unit

1. Sensitivity

For 12 DB SINAD . . . . . . . . . . dBm

For Call Signal Detection . . . . dBm

Nominal

-121 -121

Speaker/Microphone

Signal Strength

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

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Your microTALK® radio has a signal strength meter that shows the strength of your incoming and outgoing transmissions. The ascending bars next to the signal strength indicate the strength of the signal. The greater the number of bars visible, the stronger the signal. The fewer number of bars visible, the weaker the signal.

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

2. Max. Audio Output

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

3. Max. S/N Ratio

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

4. Squelch

a) Sensitivity . . . . . . . . . . . . . . dBm b) Attack Time . . . . . . . . . . . . . mS c) Closing Time . . . . . . . . . . . . mS

5. Audio Frequency Response

@ 300 HZ . . . . . . . . . . . . . . . . . dB @ 2500 HZ . . . . . . . . . . . . . . . . dB

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

7. Adjacent Channel Rejection . . . dB

8. Intermodulation Rejection . . . . dB

9. Spurious Response Rejection . dB

200

50

-121

150

200

-3

-10 5 60 65 55

Maximum Range

microTALK® Range

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A B CD E

C. Transmitter Unit

Nominal

Reduced Range

Reduced Range

Your microTALK® radio has a range of

up to six (6) miles (10 km). Your range will vary depending on terrain and conditions.

In flat, open country your radio will operate at maximum range.

Buildings and foliage in the path of the signal can reduce the range of the radio.

Dense foliage and hilly terrain will further reduce the range of the radio.

On FRS channels 8 through 14, your radio automatically switches to low power, which will limit the range the radio can communicate.

Remember, you can achieve maximum range by using Maximum Range Extender. See page 15 for details.

1	1	FRS/GMRS	462.5625	a	1.	Power
2	2	FRS/GMRS	462.5875	a		GMRS	.W	2
3	3	FRS/GMRS	462.6125	a		. . . . . . . . . . . . . . . .FRS Only	.mW	500
4	4	FRS/GMRS	462.6375	a	2.	Carrier Frequency Stability . . .	±Hz	500
5	5	FRS/GMRS	462.6625	a	3.	Modulation Limiting	KHz	2.5
6	6	FRS/GMRS	462.6875	a
					4.	Carrier Attack Time	. mS	80
7	7	FRS/GMRS	462.7125	a
					5.	Audio Frequency Response
8		FRS	467.5625	b
						@ 300 HZ	. dB	-12
9		FRS	467.5875	b
						@ 2500 HZ	. dB	+6
10		FRS	467.6125	b	6.	Audio Distortion	. %	3
11		FRS	467.6375	b
					7.	Hum Noise	dB	30
12		FRS	467.6625	b
					8.	Transient Frequency Behavior
13		FRS	467.6875	b
						a) TX On	mS	30
14		FRS	467.7125	b
15	11	GMRS	462.5500	a		. . . . . . . . . . . . . . . .b) TX Off	. mS	5
16	8	GMRS	462.5750	a
19	13	GMRS	462.6500	a			Unit	Nominal
17	12	GMRS	462.6000	a	D. Power Supply
18	9	GMRS	462.6250	a
20	10	GMRS	462.6750	a	1.	Battery Life (5:5:90 RATIO)
21	14	GMRS	462.7000	a
						With Alkaline Batteries	HR	24
22	15	GMRS	462.7250	a
					2.	Battery Operating Range	V	4.2 - 6.0

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