Cobra Electronics PR550WX owner manual MicroTALK Range, Your microTALK radio has a range

Operation

Maximum Range

Reduced Range

Reduced Range

Using Your Radio

microTALK® Range

•

Your microTALK® radio has a range of

up to five (5) miles (8 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 14 for details.

Introduction			Operation		Customer Assistance		Warranty
General Specifications										•
	Frequency				B. Receiver				Unit	Nominal
A. FRS/GMRS
	Allocation and
					1.	Sensitivity
	Compatibility
						For 12 DB SINAD			dBm	-121
Important: Please note that Cobra® GMRS						. . .For Call Signal Detection		.	dBm	-121
					2.	Max. Audio Output
models with 15 channels may designate						@10% THD			mW	200
different channel numbers for the same					3.	Max. S/N Ratio
frequency. For example, a Cobra® 15 channel						@ 1mV RF Input			. dB	50
GMRS model would need to be tuned to					4.	Squelch
channel 11 in order to communicate with
						a) Sensitivity			dBm	-121
a 22 channel GMRS tuned to channel 15.
						b) Attack Time			. mS	150
Please refer to the chart below for channel/
						c) Closing Time . . . .			. mS	200
frequency number compatibility.
					5.	Audio Frequency Response
A = Channel No. For
						@ 300 HZ			. dB	-3
	22 Channel GMRS Models					@ 2500 HZ			. dB	-10
B = Channel No. For 15					6.	Signal Displacement BW		+/-KHZ		5
	Channel GMRS Models
					7.	Adjacent Channel Rejection			. dB	40
C = Type of Radio Service
					8.	Intermodulation Rejection			. dB	65
D = Frequency in MHz
E = Power in Watts					9.	Spurious Response Rejection			. dB	55
A	B	C	D	E	C. Transmitter				Unit	Nominal
1	1	FRS/GMRS	462.5625	1.0
2	2	FRS/GMRS	462.5875	1.0	1.	Power
3	3	FRS/GMRS	462.6125	1.0
						GMRS			W	1
4	4	FRS/GMRS	462.6375	1.0
						FRS Only			.mW	500
5	5	FRS/GMRS	462.6625	1.0
					2.	Carrier Frequency Stability . .		.	±Hz	500
6	6	FRS/GMRS	462.6875	1.0
					3.	Modulation Limiting			KHz	2.5
7	7	FRS/GMRS	462.7125	1.0
					4.	Carrier Attack Time			. mS	80
8		FRS	467.5625	0.5	5.	Audio Frequency Response
9		FRS	467.5875	0.5
						@ 300 HZ			. dB	-12
10		FRS	467.6125	0.5		@ 2500 HZ			. dB	+6
11		FRS	467.6375	0.5	6.	Audio Distortion		. %.		3
12		FRS	467.6625	0.5	7.	Hum Noise			. dB	30
13		FRS	467.6875	0.5	8.	Transient Frequency Behavior
14		FRS	467.7125	0.5		a) TX On			. mS	30
15	11	GMRS	462.5500	1.0		. . . . . . .b) TX Off			. mS	5
16	8	GMRS	462.5750	1.0
19	13	GMRS	462.6500	1.0					Unit	Nominal
17	12	GMRS	462.6000	1.0	D. Power Supply
18	9	GMRS	462.6250	1.0
20	10	GMRS	462.6750	1.0	1.	Battery Life (5:5:90 RATIO)
21	14	GMRS	462.7000	1.0
						With Alkaline Batteries			. HR	24
22	15	GMRS	462.7250	1.0	2.	Battery Operating Range . . . .		.	. V	4.2 - 6.0

16 English Nothing comes close to a Cobra™ 17