Operation
Maximum Range
Using Your Radio
microTALK® Range
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| Introduction | Operation | Customer Assistance | Warranty |
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General Specifications
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Reduced Range
Reduced Range
Your microTALK® radio has a range of up 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 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 22 for details.
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 = 3.0/2.0/0.5 (selectable) b = 0.5
A B CD E
B. Receiver | Unit |
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1. Sensitivity
For 12 DB SINAD . . . . . . . . . . dBm
For Call Signal Detection . . . . dBm
2. Max. Audio Output
@10% THD . . . . . . . . . . . . . . . mW
3. Max. S/N Ratio
@ 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 . . .
7. Adjacent Channel Rejection . . . dB
8. Intermodulation Rejection . . . . dB
9. Spurious Response Rejection . dB
C. Transmitter | Unit |
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Nominal
200
50
150
200
Nominal
1 | 1 | FRS/GMRS | 462.5625 | a | 1. | Power |
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2 | 2 | FRS/GMRS | 462.5875 | a |
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| GMRS | .W | 3 |
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3 | 3 | FRS/GMRS | 462.6125 | a |
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| . . . . . . . . . . . . . . . .FRS Only | .mW | 500 |
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4 | 4 | FRS/GMRS | 462.6375 | a |
| 2. | Carrier Frequency Stability . . . | ±Hz | 500 |
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5 | 5 | FRS/GMRS | 462.6625 | a |
| 3. | Modulation Limiting | KHz | 2.5 |
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6 | 6 | FRS/GMRS | 462.6875 | a |
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| 4. | Carrier Attack Time | . mS | 80 |
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7 | 7 | FRS/GMRS | 462.7125 | a |
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5. | Audio Frequency Response |
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8 |
| FRS | 467.5625 | b |
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| @ 300 HZ | . dB |
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9 |
| FRS | 467.5875 | b |
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| @ 2500 HZ | . dB | +6 |
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10 |
| FRS | 467.6125 | b |
| 6. | Audio Distortion | . % | 3 |
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11 |
| FRS | 467.6375 | b |
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| 7. | Hum Noise | dB | 30 |
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12 |
| FRS | 467.6625 | b |
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| 8. | Transient Frequency Behavior |
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13 |
| FRS | 467.6875 | b |
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| a) TX On | mS | 30 |
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14 |
| FRS | 467.7125 | b |
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15 | 11 | GMRS | 462.5500 | a |
| . . . . . . . . . . . . . . . .b) TX Off | . mS | 5 |
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16 | 8 | GMRS | 462.5750 | a |
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19 | 13 | GMRS | 462.6500 | a |
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17 | 12 | GMRS | 462.6000 | a | D. Power Supply |
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18 | 9 | GMRS | 462.6250 | a |
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20 | 10 | GMRS | 462.6750 | a |
| 1. | Battery Life (5:5:90 RATIO) |
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21 | 14 | GMRS | 462.7000 | a |
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| With Alkaline Batteries | HR | 24 |
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22 | 15 | GMRS | 462.7250 | a |
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| 2. | Battery Operating Range | V | 4.2 - 6.0 | ||||||
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24 English | Nothing comes close to a Cobra™ 25 |
