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In article , "Richard Fry"
wrote: "K7ITM" wrote: What are the chances you'd ever see anything as large, say, as 0dBm into your receiver via skip? ________________ At 14 MHz with a rx antenna gain of 0 dBd and no transmission line loss, that would call for an incident field strength of about 78.7 mV/m. Maybe not impossible for some SW broadcast stations and very good propagation conditions? The maximum nighttime skywave fields received in the skip zones of a 50 kW, non-directional, MW AM broadcast station generally are less than 5 mV/m. RF Actually if one were to calculate the Free Space Path Loss for any Frequency, it becomes trivial to come up with the MAXIMUM Possible Receive Signal Strength for any distance, from any amount of transmitted power level. Bruce in alaska -- add a 2 before @ |
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