MCQOPTIONS
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				| 1. | 
                                    A very reliable service has to be established between two points on earth separated by 1000 km. The band that will be used as | 
                            
| A. | MF | 
| B. | VHF | 
| C. | VLF | 
| D. | HF | 
| Answer» D. HF | |