Cobra Electronics PR3175WX owner manual Power Supply

Mode Functions

Operation

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 is OK for them to speak.

Mode Button	To Turn Roger Beep On Or Off:
	1. Press the Mode button until the Roger Beep
	icon flashes on the display. The current On or
	Off setting is displayed.

Introduction	Operation	Customer Assistance	Warranty
General Specifications
				•
A. FRS/GMRS
Frequency		B. Receiver	Unit	Nominal
Allocation and
		1. Sensitivity
Compatibility		For 12 dB SINAD . . . . . . . . . . dBm		-121
		For Call Signal Detection . . . . dBm		-121
Important: Please note that Cobra®
		2. Max. Audio Output
GMRS models with 15 Channels may
		@ 10% THD . . . . . . . . . . . . . . mW		200
designate different channel numbers for
		3. Max. S/N Ratio
the same frequency. For example, a

Roger Beep On

Channel Button

Mode Button

2.Press the Channel Up or Channel Down button to select roger beep On or Off.

3.Choose one (1) of the following:

a.Press the Mode button to enter the new setting and proceed to other functions.

b.Press the Lock button to enter the new setting and return to Standby mode.

Keystroke Tones

•

With Keystroke Tones turned On, your radio will sound beeps each time you press a button or change a setting.

To Change Keystroke Tones:

1.Press the Mode button until the Keystroke Tones icon flashes on the display. The current On or Off setting is displayed.

Cobra® 15 Channel GMRS model would						@ 1mV RF Input	. dB	50
need to be tuned to Channel 11 in order					4. Squelch
to communicate with a 22 Channel GMRS						a) Sensitivity	dBm	-121
tuned to Channel 15. Please refer to the						b) Attack Time	. mS	150
chart below for channel/ frequency						c) Closing Time	. mS	200
number compatibility.					5.	Audio Frequency Response
A = Channel No. For						@ 300 Hz	. dB	-3
						@ 2500 Hz	. dB	-10
	22 Channel GMRS Models
					6.	Signal Displacement BW . . . .	+/-kHz	5
B = Channel No. For 15
	Channel GMRS Models				7.	Adjacent Channel Rejection . .	. dB	60
C = Type of Radio Service					8.	Intermodulation Rejection . . .	. dB	65
D = Frequency in MHz					9.	Spurious Response Rejection	. dB	55
E = Power in Watts
	a = 2.0/0.5 (selectable)
								Nominal
	b = 0.5				C. Transmitter		Unit
A	B	C	D	E
					1.	Power
1	1	FRS/GMRS	462.5625	a
						GMRS	.W	2
2	2	FRS/GMRS	462.5875	a
						FRS Only	.mW	500
3	3	FRS/GMRS	462.6125	a
					2.	Carrier Frequency Stability	±Hz	500
4	4	FRS/GMRS	462.6375	a
					3.	Modulation Limiting	kHz	2.5

Keystroke Tones On

Channel Button

2.Press the Channel Up or Channel Down button to turn keystroke tones On or Off.

3.Choose one (1) of the following:

a.Press the Mode button to enter the new setting and return to Standby mode.

b.Press the Lock button to enter the new setting and return to Standby mode.

5	5	FRS/GMRS	462.6625	a	4.	Carrier Attack Time	mS	80
6	6	FRS/GMRS	462.6875	a
					5.	Audio Frequency Response
7	7	FRS/GMRS	462.7125	a
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		b) TX Off	. mS	5
15	11	GMRS	462.5500	a
16	8	GMRS	462.5750	a				Nominal
17	12	GMRS	462.6000	a	D. Power Supply		Unit
18	9	GMRS	462.6250	a
19	13	GMRS	462.6500	a
					1.	Battery Life (5:5:90 RATIO)
20	10	GMRS	462.6750	a
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

20 English

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