Cobra Electronics PR3175WX - Manual (Page 13)

20 English
Mode Functions
Customer Assistance Warranty Introduction Operation
21 Nothing comes close to a Cobra ®
General Specifications
•
Nominal Unit
Nominal Unit
C. Transmitter
1. Power
GMRS . . . . . . . . . . . . . . . . . . . .W 2
FRS Only . . . . . . . . . . . . . . . . .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 +6
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 = 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
A B C D E
1 1 FRS/GMRS 462.5625 a
2 2
FRS/GMRS 462.5875 a
3 3 FRS/GMRS 462.6125 a
4 4 FRS/GMRS 462.6375 a
5 5 FRS/GMRS 462.6625 a
6 6 FRS/GMRS 462.6875 a
7 7 FRS/GMRS 462.7125 a
8 FRS
467.5625 b
9 FRS 467.5875 b
10 FRS 467.6125 b
11 FRS 467.6375 b
12 FRS 467.6625 b
13 FRS 467.6875 b
14 FRS 467.7125 b
15 11 GMRS 462.5500 a
16 8 GMRS 462.5750 a
17 12 GMRS 462.6000 a
18 9 GMRS 462.6250 a
19 13 GMRS 462.6500 a
20 10 GMRS 462.6750 a
21 14 GMRS 462.7000 a
22 15 GMRS 462.7250 a
B. Receiver
1. Sensitivity
For 12 dB SINAD . . . . . . . . . . dBm -121
For Call Signal Detection . . . . dBm -121
2. Max. Audio Output
@ 10% THD . . . . . . . . . . . . . . mW 200
3. Max. S/N Ratio
@ 1mV RF Input . . . . . . . . . . . dB 50
4. Squelch
a) Sensitivity . . . . . . . . . . . . . . dBm -121
b) Attack Time . . . . . . . . . . . . . mS 150
c) Closing Time . . . . . . . . . . . . mS 200
5. Audio Frequency Response
@ 300 Hz . . . . . . . . . . . . . . . . . dB -3
@ 2500 Hz . . . . . . . . . . . . . . . . dB -10
6. Signal Displacement BW . . . . +/-kHz 5
7. Adjacent Channel Rejection . . . dB 60
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
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.
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.
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.
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.
Operation
Mode Button
Keystroke Tones On
Channel Button
Mode Button
Roger Beep On
Channel Button
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