Power Supply; General Specifications - Cobra MICROTALK PR4200WX Owner's Manual

Using Your Radio
Operation
microTALK
Maximum Range
Your microTALK
to seven (7) miles (11 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
Reduced Range
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.
Reduced Range
Remember, you can achieve maximum
range by using Maximum Range
Extender. See page 22 for details.
24 English
® Range
® radio has a range of up
Introduction

General Specifications

•
A. FRS/GMRS
Frequency
Allocation and
Compatibility
Important: Please note that Cobra
models with 15 channels may designate
different channel numbers for the same
frequency. For example, a Cobra
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 = 3.0/2.0/0.5 (selectable)
b = 0.5
A B C
1 1 FRS/GMRS
2 2 FRS/GMRS
3 3 FRS/GMRS
4 4 FRS/GMRS
5 5 FRS/GMRS
6 6 FRS/GMRS
7 7 FRS/GMRS
8 FRS
9 FRS
10 FRS
11 FRS
12 FRS
13 FRS
14 FRS
15 11 GMRS
16 8 GMRS
17 12 GMRS
18 9 GMRS
19 13 GMRS
20 10 GMRS
21 14 GMRS
22 15 GMRS
Operation Customer Assistance
B. Receiver
1. Sensitivity
For 12 DB SINAD . . . . . . . . . . dBm
For Call Signal Detection . . . . dBm
® GMRS 2. Max. Audio Output
@10% THD . . . . . . . . . . . . . . . mW
3. Max. S/N Ratio
® 15 channel
@ 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
C. Transmitter
D E
462.5625 a
1. Power
462.5875 a GMRS . . . . . . . . . . . . . . . . . . . .W
462.6125 a FRS Only . . . . . . . . . . . . . . . . .mW
462.6375 a
2. Carrier Frequency Stability . . . ±Hz
462.6625 a
3. Modulation Limiting . . . . . . . . KHz
462.6875 a
4. Carrier Attack Time . . . . . . . . . mS
462.7125 a
5. Audio Frequency Response
467.5625 b
@ 300 HZ . . . . . . . . . . . . . . . . . dB
467.5875 b
@ 2500 HZ . . . . . . . . . . . . . . . . dB
467.6125 b
6. Audio Distortion . . . . . . . . . . . . %
467.6375 b
7. Hum Noise . . . . . . . . . . . . . . . . dB
467.6625 b
8. Transient Frequency Behavior
467.6875 b
a) TX On . . . . . . . . . . . . . . . . . mS
467.7125 b
b) TX Off . . . . . . . . . . . . . . . . . mS
462.5500 a
462.5750 a
462.6000 a
D. Power Supply
462.6250 a
462.6500 a
462.6750 a
1. Battery Life (5:5:90 RATIO)
462.7000 a
With Alkaline Batteries . . . . . . . HR
462.7250 a
2. Battery Operating Range . . . . . . V
Nothing comes close to a Cobra
Warranty
•
-121
-121
200
50
-121
150
200
-3
-10
5
60
65
55
3
500
500
2.5
80
-12
+6
3
30
30
5
24
4.2 - 6.0
™ 25