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curious re: AM coverage...

(note: because of the specs in excess of normal part 15 levels, I'm posting the question here...)

I was curious about what the approximate coverage area of a station might be with the following (not that one exists or would, I just would like to have some idea):
50kW omni-directional (a DA would complicate calculations, but let me know if it's possible to reasonably calculate it)
center-fed full-wave (two 1/2-wave antennas stacked) antenna over a complete ground system consisting of 120 evenly-spaced 1/2-wave radials
AM 530 (yea, no licensed stations yet, but TIS's are there - just wonder how well 50kW would do there)
soil conductivity 30 (or whatever is the highest encountered on land; assume that soil conductivity is on the entire planet with flat ground)
(basically, I'm looking for best-case scenario that doesn't involve a salt water path)
maybe R Fry might be able to calculate the answer to this. (he seems to be able to - I haven't figured it out yet.)

Also, besides the normal coverage distances R Fry has calculated for part 15 systems in the past, I would also like fringe coverage on a walkman (to where the signal is barely readable enough to make out intelligible speech, on a good-quality Walkman (SRF-42 for example), fringe to walkman with properly-tuned Select-A-Tenna, and fringe to walkman using Bruce Carter's (or someone else's if there's one that's better) best large AM tuned loop antenna.

Also, at lower power levels, what about 500 milliwatts and a 15-meter antenna (100mw*5 and 3m*5), or 1 watt and a 15-meter antenna (160-190kHz levels), at 1610kHz, over a decent (for a part 15) ground system, ground mounted?
 
tfcwings said:
I was curious about what the approximate coverage area of a station might be with the following (not that one exists or would, I just would like to have some idea):
50kW omni-directional (etc)

Data:
Frequency= 530 kHz
Power= 50.00 kW
Radiation at 1 mile= 2370.0 mV/m
Conductivity= 30.0 mS/m

Results using FCC propagation curves for freq, power and conductivity:

Contour level > Distance to contour
50.000 mV > 39.7742 miles (center city - NYC, Chicago etc)
5.000 mV/m > 189.4066 miles (residential using cheap indoor receiver)
0.100 mV/m > 610.9874 miles (rural, using good car radio)

Also, besides the normal coverage distances R Fry has calculated for part 15 systems in the past, I would also like fringe coverage on a walkman ...(etc)

Answers to these questions rely on receiving system information not readily available (to me, anyway).

Also, at lower power levels, what about 500 milliwatts and a 15-meter antenna (100mw*5 and 3m*5), or 1 watt and a 15-meter antenna (160-190kHz levels), at 1610kHz, over a decent (for a part 15) ground system, ground mounted?

You can get some idea of the change in "Part 15" field strength when using whatever power you want to radiate by multiplying the values in my previous posts and papers by the square root of the power change.
//
 
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