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Wireless Broadband Modems
11. MMDS Path Engineering: An Example*
As this is only an example, actual figures will vary according to the specific downconverter vendor's product. Sample coverage assumes the following design criteria:
- 2.5 dB typical channel combiner loss
- 2 dB typical waveguide/jumper loss
- 13 dBi transmit antenna gain
- 32 dB block downconverter gain
- 2.5 dB block downconverter noise figure
- 6 dB typical receive line loss
- 15 dB typical fade margin
| Tx Output Power | Rx Antenna Gain | Maximum Coverage |
| 5 watts avg. | 18 dBi 24 dBi | 12.5 mi. 25.5 mi. |
| 10 watts avg. | 18 dBi 24 dBi | 12.5 mi. 25.5 mi. |
| 15 watts avg. | 18 dBi 24 dBi | 15.5 mi. 31.0 mi. |
*This module provided courtesy of the ITS division of ADC.



