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10
English
Nominal
Unit
Nominal
Unit
General Specifications
Operation
C. Transmitter
1. Power . . . . . . . . . . . . . . . . . . . . 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 3
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 = 22 Channel GMRS
Channel No. Displayed
B = Channel No. For 15
Channel GMRS Models
C = Type of Radio Service
D = Frequency in MHz
E = Power in Watts
AB C D E
1 1 FRS/GMRS 462.5625 0.5
2 2 FRS/GMRS 462.5875 0.5
3 3 FRS/GMRS 462.6125 0.5
4 4 FRS/GMRS 462.6375 0.5
5 5 FRS/GMRS 462.6625 0.5
6 6 FRS/GMRS 462.6875 0.5
7 7 FRS/GMRS 462.7125 0.5
8 FRS 467.5625 0.5
9 FRS 467.5875 0.5
10 FRS 467.6125 0.5
11 FRS 467.6375 0.5
12 FRS 467.6625 0.5
13 FRS 467.6875 0.5
14 FRS 467.7125 0.5
15 11 GMRS 462.5500 0.5
16 8 GMRS 462.5750 0.5
17 12 GMRS 462.6000 0.5
18 9 GMRS 462.6250 0.5
19 13 GMRS 462.6500 0.5
20 10 GMRS 462.6750 0.5
21 14 GMRS 462.7000 0.5
22 15 GMRS 462.7250 0.5
B. Receiver
1. Sensitivity
For 12 DB SINAD . . . . . . . . . . . dBm -122
For Call Signal Detection . . . . . dBm -122
2. Max. Audio Output
@10%THD . . . . . . . . . . . . . . . . mW 350
3. Max. S/N Ratio
@ 1mV RF Input . . . . . . . . . . . . dB 40
4. Squelch
a) Sensitivity . . . . . . . . . . . . . dB sinad 10
b) Attack Time . . . . . . . . . . . . . . mS 120
c) Closing Time . . . . . . . . . . . . . mS 200
5. Audio Frequency Response
@ 300 HZ . . . . . . . . . . . . . . . . . dB -3
@ 2500 HZ . . . . . . . . . . . . . . . . dB -10
6. Signal Displacement BW . . . . +/-KHz 6
7. Adjacent Channel Rejection . . . . dB 50
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